13.125 in MANUFACTURING DOCUMENT PACKAGE UW-1000 UNDERWATER LIGHT Master Manufacturing Manual Master Assembly Blueprint Assembly & Build Manual Purchased Parts & Acrylic Components Amazon Purchase Addendum Laser-Cut SVG Fabrication Files Formal Material Cost Report Compiled August 19, 2026 Source documents reproduced in the requested manufacturing-package order 1
TABLE OF CONTENTS UW-1000 UNDERWATER LIGHT This compiled manual preserves the supplied source documents in the requested order. Page references below correspond to the combined PDF page numbers. SECTION PAGE 1. UW-1000 Master Assembly Blueprint 3 2. Underwater Light Assembly & Build Manual 4-10 3. Purchased Parts & Fabricated Acrylic Components Manual 11-20 4. Amazon Purchase Screenshots Addendum 21-35 5. Laser-Cut SVG - Base of Tube 36 6. Laser-Cut SVG - Bulb Ends 37 7. Laser-Cut SVG - Outside Ring and Top 38 8. Formal Material Cost Report - 12 V and 120 V Versions 39-44 Laser-cut SVG drawings are reproduced as vector PDF pages at their native document page sizes. Combined document: 44 pages 2 9. Executed Mutual Non-Disclosure Agreement 45-49 Combined document: 49 pages
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Underwater Light Assembly Manual — Draft 1 UNDERWATER LIGHT Assembly & Build Manual Draft 1 — Build Sequence Captured From Current Shop Process IMPORTANT: This manual follows the exact build order currently used. No bolts or mechanical fasteners are used in the sealed tube assembly; joints are bonded and sealed with CA adhesive and 5200 sealant as specified. Blueprint drawings and jig drawings can be inserted into later revisions without changing the build sequence. 1. Product Configuration Item Specification Main transparent tube Polycarbonate, 13.000 in long, 2.000 in OD, 2 mm wall Finished assembly length Approx. 13.125 in Internal center rod Polycarbonate, 10.000 in long × 1.000 in diameter Internal rod-end discs 1/8 in acrylic Shell end discs 1/4 in acrylic External attachment ring 1/4 in acrylic, hexagonal LED strip 8 ft (96 in) green 12 V COB LED strip Power lead 18 AWG, 50 ft long Cooling fluid Food-grade mineral oil Cable gland Nylon, 1/4 in NPT type; mounted at edge of top assembly Outer caps Flexible vinyl, nominal 2 in, 1 in high 2. Parts, Materials & Shop Supplies 13 in polycarbonate main tube 10 in × 1 in diameter acrylic center rod 1/8 in acrylic top rod-end disc: center opening for rod plus one wire-routing hole 1/8 in acrylic bottom rod-end disc: center opening for rod plus four oil-flow holes 1/4 in solid acrylic lower shell end disc 1/4 in acrylic upper shell end disc with laser-cut gland hole 1/4 in acrylic hexagonal attachment ring Two flexible vinyl end caps 8 ft green 12 V COB LED strip 4
Underwater Light Assembly Manual — Draft 1 50 ft of 18 AWG two-conductor wire Cable gland and lock nut 1 in piece of heat-shrink tubing CA adhesive CA activator 5200 sealant Food-grade mineral oil Solder and soldering equipment Thread tap for the upper acrylic gland hole PVC positioning jig with Position One and Position Two 12 V DC test power source Material distinction: the main tube is polycarbonate. The center rod, laser-cut discs, and hexagonal attachment ring are acrylic. STEP 1 — BUILD THE INTERNAL LIGHT BULB ASSEMBLY 1.1 Bond the Acrylic Rod-End Discs Top disc: Fit the 1/8 in acrylic top rod-end disc onto the top of the 10 in acrylic rod. The disc contains the large center opening for the rod and one smaller hole for the LED-strip wire. Seat the disc so its outer face is exactly flush with the end of the rod. Bond it in place with CA adhesive. Bottom disc: Fit the 1/8 in acrylic bottom rod-end disc onto the opposite end of the rod. This disc contains the large center opening for the rod plus four smaller oil-flow holes. Seat it exactly flush with the rod end and bond it with CA adhesive. Keep all four oil-flow holes in the bottom rod-end disc open and free of adhesive. 1.2 Install the LED Strip 1. Remove the backing tape from the 8 ft LED strip. 2. Push the factory-installed LED-strip wire through the small wire-routing hole in the top acrylic disc. 3. Begin wrapping the LED strip around the acrylic rod in a continuous spiral from the top toward the bottom. 4. Continue wrapping until the full 8 ft strip has been installed along the rod. 5. Apply approximately two drops of CA glue at the top of the strip and two drops at the bottom to keep the strip from peeling. 6. Spray the glued areas with CA activator. 1.3 Test the Light Bulb Before Proceeding Connect the LED-strip leads to a suitable 12 V DC power source, observing correct polarity. Confirm that the strip illuminates properly before beginning the shell assembly. 5
Underwater Light Assembly Manual — Draft 1 Do not proceed to the sealed shell assembly unless the internal light bulb passes this illumination test. STEP 2 — ASSEMBLE AND DOUBLE-SEAL THE BOTTOM OF THE MAIN SHELL 2.1 Install the Solid Lower Acrylic End Disc Insert the solid 1/4 in acrylic bottom end disc into the bottom of the 13 in main polycarbonate tube. Recess the disc approximately 0.750 ft from the bottom edge of the tube. 2.2 Apply the Primary CA Seal Run a continuous bead of CA adhesive around the entire seam where the acrylic disc meets the inside wall of the main tube. The bead should fully encircle the disc. Spray the CA adhesive with activator. 2.3 Apply the Secondary 5200 sealant Seal Using the caulk tube of 5200 sealant, run a continuous bead over the CA-sealed seam to create the second seal at the lower acrylic end-disc joint. Bottom shell seal at this stage: CA seam + 5200 sealant over the CA seam. STEP 3 — LOCATE AND BOND THE HEXAGONAL ATTACHMENT RING 3.1 Place the Main Tube in Position One Insert the main polycarbonate tube into Position One on the PVC positioning jig. Seat the tube fully so the jig establishes the correct ring location. 3.2 Position the Hexagonal Acrylic Ring Slide the 1/4 in acrylic hexagonal attachment ring over the outside of the main tube and move it against the locating point established by the jig. 3.3 Bond the Ring Apply CA adhesive around the full circumference where the acrylic attachment ring meets the outside of the polycarbonate tube. Spray with CA activator. 3.4 Move to Position Two Once the adhesive has set, move the tube to Position Two on the PVC jig. 3.5 Install the Completed Light Bulb With the main tube seated in Position Two, insert the completed internal light bulb assembly into the main polycarbonate tube. 6
Underwater Light Assembly Manual — Draft 1 STEP 4 — BUILD THE TOP WIRE AND GLAND ASSEMBLY 4.1 Feed the 50 ft Power Lead Through the Vinyl Cap Take the 50 ft length of 18 AWG wire and feed it through the gland opening in the top face of the vinyl cap. Orientation matters: feed the wire through the TOP of the vinyl cap, not through the bottom/open end. 4.2 Tap the Upper Acrylic End Disc Run the thread tap through the hole that was precut in the upper acrylic end disc by the laser cutter. Tap the hole completely so it is ready to receive the cable gland. 4.3 Install and Lock the Cable Gland 7. Screw the cable gland into the tapped hole in the upper acrylic end disc. 8. Apply CA glue to the bottom of the gland where it meets the acrylic disc to lock the gland into the acrylic top. 9. Spray the glued area with CA activator. 4.4 Feed the Power Lead Through the Gland Feed the 50 ft 18 AWG wire through the installed gland until approximately 8.000 in of wire extends below the bottom side of the upper acrylic end disc. STEP 5 — MAKE THE INTERNAL ELECTRICAL CONNECTION 5.1 Strip Both Wire Sets Strip the ends of the LED-strip wires extending out of the top of the main tube and the approximately 8 in length of 18 AWG wire extending below the upper acrylic assembly. 5.2 Install Heat-Shrink Tubing Before Soldering Cut a 1.000 in piece of heat-shrink tubing and slide it onto either one of the two conductors. Keep it far enough from the exposed conductor that it will not shrink during soldering. 5.3 Solder the Connections Solder the LED-strip wires to the corresponding 18 AWG conductors. Make sure the connections are polarized correctly: positive to positive and negative to negative. 5.4 Insulate One Solder Joint Slide the 1 in heat-shrink tube over one completed solder joint. Center it over the exposed soldered connection and heat it until it shrinks tightly around the joint. The insulated joint must not be able to contact the second solder joint during final assembly and 7
Underwater Light Assembly Manual — Draft 1 sealing. STEP 6 — FILL WITH MINERAL OIL Fill the main polycarbonate tube with food-grade mineral oil. Pour slowly so the oil can move around the internal light bulb assembly and through the four oil-flow holes in the lower rod-end disc. Continue filling until the oil level is approximately 3.000 in below the top of the main tube. Allow trapped air bubbles to rise and escape before closing the top. Current estimated fill quantity is approximately 300–310 mL (about 10–10.5 US fl oz), but the 3 in headspace is the controlling build reference. STEP 7 — INSTALL AND SEAL THE UPPER ACRYLIC END DISC 7.1 Seat the Acrylic Top Position the upper acrylic end disc inside the top of the main polycarbonate tube and seat it flush with the top of the tube. 7.2 Seal the Acrylic-to-Tube Seam Run CA glue around the entire seam where the upper acrylic disc meets the inside wall of the main tube. 7.3 Seal the Gland Base Apply CA glue around the base of the cable gland where it passes through the upper acrylic end disc. Spray the CA-glued areas with activator. STEP 8 — SEAL AND TIGHTEN THE CABLE GLAND Place a small quantity of 5200 sealant inside the cable gland. Tighten the gland lock nut down firmly so the gland compresses around the 18 AWG power wire and the 5200 forms an additional seal inside the gland. STEP 9 — DOUBLE-SEAL THE TOP AND INSTALL THE TOP VINYL CAP Cover the top of the main tube around the cured CA-sealed upper acrylic joint with a continuous bead of 5200 sealant. This creates the second seal around the top acrylic end-disc joint. Stretch the top vinyl cap over the main polycarbonate tube and push it down until it is fully seated and beds into the fresh 5200. Confirm that the cable gland remains correctly positioned through the opening near the edge of the top vinyl cap. 8
Underwater Light Assembly Manual — Draft 1 STEP 10 — REMOVE FROM THE JIG AND INSTALL THE BOTTOM VINYL CAP Remove the light assembly from Position Two on the PVC jig. Place a quantity of 5200 sealant inside the bottom vinyl cap. Stretch the bottom vinyl cap over the bottom end of the main polycarbonate tube and push it fully into position. The bottom vinyl cap and its 5200 sealant bedding form the third sealing layer at the bottom end of the light. STEP 11 — FINAL ELECTRICAL TEST Strip the insulation from the two conductors at the free end of the 50 ft 18 AWG power lead. Connect the completed light to the correct 12 V DC power source, observing proper polarity. Verify that the completed underwater light illuminates and operates correctly. If the light does not operate, verify the external power connection and polarity before placing the unit into service. 12. Final Build Checklist ☐ Internal LED light bulb was tested and illuminated before shell assembly. Top and bottom rod-end discs are flush with the ends of the 10 in acrylic rod.☐ ☐ Four oil-flow holes in the bottom rod-end disc remain open. ☐ Lower solid shell disc is recessed approximately 0.750 ft. ☐ Lower shell joint has both CA and 5200 sealant seals. ☐ Hexagonal attachment ring is bonded around its full circumference. ☐ Main tube was moved from Position One to Position Two before inserting the light bulb assembly. ☐ 50 ft 18 AWG power lead was routed through the TOP of the vinyl cap. ☐ Upper acrylic gland hole was tapped before gland installation. ☐ Gland is locked to the upper acrylic disc with CA adhesive. ☐ Approximately 8 in of wire extended below the acrylic top before soldering. 9
Underwater Light Assembly Manual — Draft 1 ☐ LED wiring polarity was verified before soldering. ☐ One solder joint is insulated with 1 in heat-shrink tubing. ☐ Mineral oil is filled to approximately 3 in below the top of the main tube. ☐ Upper acrylic end disc is flush with the top of the main tube. ☐ Upper acrylic seam and gland base are sealed with CA. ☐ 5200 sealant was added inside the gland before tightening the lock nut. ☐ Top acrylic seam received a second seal of 5200 sealant. ☐ Top vinyl cap is fully seated into the 5200 sealant. ☐ Bottom vinyl cap is filled/bedded with 5200 sealant and fully seated. ☐ Completed light passes the final 12 V operational test. 13. Build Notes This manual records the current hand-build procedure and sequence. Dimensions and part profiles that are controlled by the laser-cut SVG files should remain tied to those source files in the final manufacturing package. Future revisions can add: PVC jig drawings, acrylic laser-cut drawings, the final underwater-light blueprint, photos of each build stage, and a troubleshooting section. 10
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 UNDERWATER LIGHT Purchased Parts & Fabricated Acrylic Components Manual Reference Manual — Draft 1 Purpose: identify purchased components, show the exact reference screenshots, and document how each item is used in the underwater-light build. Prices shown in screenshots are purchase-time references only and may change. 1. Component Index # Component Type Use per light 1 Green COB LED Strip Installed component 8 ft (96 in) used per light 2 Main Polycarbonate Tube Installed component 1 tube per light 3 Acrylic Center Rod Installed component 1 rod per light 4 Cable Gland Installed component 1 gland per light 5 18 AWG Two-Conductor Wire Installed component 50 ft used per light 6 Heat-Shrink Tubing Consumable At least one 1 in piece used inside each light; additional pieces used for the 12 V alligator-clip connection 7 Rosin-Core Solder Consumable Consumable 8 5200 Sealant Consumable Consumable 9 CA Glue and Activator Consumable Consumable 10 Flexible Vinyl End Caps Installed component 2 caps per light 11 Food-Grade Mineral Oil Consumable Approx. 300-310 mL per light; fill level is approximately 3 in below the top of the tube 12 120 V Version Transformer 120 V accessory 1 transformer included with each 120 V version 13 12 V Version Alligator- Clip Harness 12 V installed lead 1 harness per 12 V light 14 Laser-Cut Acrylic Base of Tube In-house laser-cut acrylic Included in the $2.30 total laser-cut acrylic cost per finished light. 15 Laser-Cut Acrylic Bulb Ends In-house laser-cut acrylic Included in the $2.30 total laser-cut acrylic cost per finished light. 11
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 16 Laser-Cut Acrylic Outside Ring and Top In-house laser-cut acrylic Included in the $2.30 total laser-cut acrylic cost per finished light. TOTAL LASER-CUT ACRYLIC SET Fabricated in-house $2.30 per finished light 1. Green COB LED Strip Amazon / product reference TOPAI 12V COB LED Strip, Green, 16.4 ft, IP65 Use in product Installed inside the light. The strip is wrapped around the center rod. Quantity / usage 8 ft (96 in) used per light Build notes Factory adhesive backing is removed before wrapping. The strip is additionally secured with CA glue at the top and bottom. 2. Main Polycarbonate Tube Amazon / product reference Clear rigid tube, 2 in diameter, 13 in length, 2 mm wall Use in product Main transparent outer shell of the underwater light. Quantity / usage 1 tube per light Build notes Project build specification: 13.000 in long, 2.000 in OD, 2 mm wall. 3. Acrylic Center Rod Amazon / product reference JMIATRY clear 1 in diameter rod, 10 in length Use in product Center support for the helical LED strip. Quantity / usage 1 rod per light Build notes Length is 10 in. Material is acrylic. The final blueprint should identify the center rod as acrylic. 4. Cable Gland Amazon / product reference 1/4 in NPT waterproof cable gland, 4-8 mm cable 12
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 range, black nylon Use in product Passes the power lead through the upper vinyl cap and threads into the tapped upper acrylic end disc. Quantity / usage 1 gland per light Build notes Mounted near the outer edge of the top assembly, not in the center. 5. 18 AWG Two-Conductor Wire Amazon / product reference 18/2 low-voltage outdoor wire, 200 ft spool Use in product Main external power lead from the light to the power connection. Quantity / usage 50 ft used per light Build notes One end is soldered to the LED-strip leads. The other end is configured according to the 12 V or 120 V product version. 6. Heat-Shrink Tubing Amazon / product reference Wirefy 3:1 adhesive-lined heat-shrink tubing kit Use in product Insulates soldered electrical connections. Quantity / usage At least one 1 in piece used inside each light; additional pieces used for the 12 V alligator-clip connection Build notes The internal build uses heat shrink on one solder joint to prevent the two joints from shorting during sealing. 7. Rosin-Core Solder Amazon / product reference MAIYUM 63/37 rosin-core solder, 0.8 mm Use in product Used for all electrical solder connections in the light. Quantity / usage Consumable Build notes Used for the LED-to-18 AWG connection and for the 12 V alligator-clip lead connection. 13
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 8. 5200 Sealant Amazon / product reference 5200 marine adhesive/sealant Use in product Secondary and tertiary waterproof sealing of the shell and end caps. Quantity / usage Consumable Build notes Use the generic project term “5200 sealant”; brand is not specified in the build documentation. 9. CA Glue and Activator Amazon / product reference Cyanoacrylate (CA) glue with spray activator Use in product Primary bonding and sealing adhesive throughout the build. Quantity / usage Consumable Build notes Used on the rod-end discs, LED strip retention, lower and upper shell discs, attachment ring, and gland. 10. Flexible Vinyl End Caps Amazon / product reference Prescott Plastics 2 in flexible black vinyl end caps Use in product Outer top and bottom protective/sealing caps. Quantity / usage 2 caps per light Build notes Top cap is modified with a gland clearance opening near the edge. Bottom cap remains unmodified. 11. Food-Grade Mineral Oil Amazon / product reference MAXTITE food-grade mineral oil, 5 gallon container Use in product Cooling and fill fluid inside the light. Quantity / usage Approx. 300-310 mL per light; fill level is approximately 3 in below the top of the tube Build notes Fill slowly and allow trapped air to escape through the internal oil-flow passages. 14
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 12. 120 V Version Transformer Amazon / product reference Briidea 60 W 120 V AC to 12 V DC outdoor transformer Use in product Included loose in the box with the 120 V product version. It powers the 12 V light from a 120 V AC source. Quantity / usage 1 transformer included with each 120 V version Build notes This transformer is not installed inside the underwater light. 13. 12 V Version Alligator-Clip Harness Amazon / product reference 16 AWG battery alligator-clip harness Use in product Permanent battery connection for the 12 V product version. Quantity / usage 1 harness per 12 V light Build notes The harness is soldered to the free end of the 50 ft 18 AWG light lead and the soldered connections are protected with heat-shrink tubing. 14. Fabricated Acrylic Components These pieces are fabricated in-house from acrylic sheet using the laser-cut files supplied with this project. Estimated acrylic component cost per finished light: $2.30 Included cut files: Base of Tube 1/4 in acrylic shell end-disc profile Bulb Ends 1/8 in acrylic internal rod-end disc profiles 15
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 Outside Ring and Top 1/4 in acrylic external hexagonal attachment ring and upper acrylic end-disc profiles 15. 12 V and 120 V Product Configurations 12 V Version The underwater light itself remains a 12 V DC light. The battery alligator-clip harness is permanently soldered to the free end of the 50 ft 18 AWG power lead. Solder and heat-shrink tubing are used to make and insulate the alligator-clip lead connections. 120 V Version The underwater light itself remains a 12 V DC light. A 120 V AC-to-12 V DC transformer is included separately in the product box. The transformer is an external accessory and is not installed inside the light. 16. Final Reference Notes The acrylic pieces are not Amazon-purchased finished parts; they are laser-cut in-house from the project SVG files. The estimated total acrylic cost is $2.30 per finished light. The center rod is acrylic, 1 in diameter and 10 in long. The final blueprint should identify the center rod as acrylic. 16
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 17. Laser-Cut Acrylic Parts — Image & Cost Reference Known acrylic material cost per finished light: $2.30 total. The $2.30 figure is the total cost for the complete laser-cut acrylic set used in one light. An exact per-piece allocation has not been established, so the individual images below are marked as components of that $2.30 total rather than assigning unsupported individual prices. 17
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 Laser-Cut Acrylic Base of Tube Laser cut file Base of Tube(1).svg Material / use 1/4 in acrylic lower shell end-disc profile. Cost reference Included in the $2.30 total laser-cut acrylic cost per finished light. Set total $2.30 total acrylic cost per finished light 18
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 Laser-Cut Acrylic Bulb Ends Laser cut file Bulb Ends(2).svg Material / use 1/8 in acrylic internal top and bottom rod-end disc profiles. Cost reference Included in the $2.30 total laser-cut acrylic cost per finished light. Set total $2.30 total acrylic cost per finished light 19
Underwater Light — Purchased Parts & Acrylic Components Manual — Draft 4 Laser-Cut Acrylic Outside Ring and Top Laser cut file Outside ring and top(1).svg Material / use 1/4 in acrylic external hexagonal attachment ring and upper shell end-disc profiles. Cost reference Included in the $2.30 total laser-cut acrylic cost per finished light. Set total $2.30 total acrylic cost per finished light 20
Underwater Light Project — Amazon Purchase Screenshots Addendum UNDERWATER LIGHT PROJECT Amazon Purchase Screenshots Addendum Reference Addendum to the Purchased Parts Manual This addendum preserves the Amazon screenshots supplied for the components used in the underwater light project. Prices, availability, and product listings shown in the screenshots are purchase-time references and may change. 21
Underwater Light Project — Amazon Purchase Screenshots Addendum Amazon Purchase Screenshot Index 1. Green COB LED Strip 2. Main Polycarbonate Tube 3. 1 in x 10 in Center Rod 4. 1/4 in NPT Cable Gland 5. 18/2 Power Wire 6. Heat-Shrink Tubing Kit 7. Rosin-Core Solder 8. 5200 Sealant 9. CA Glue and Activator 10. 2 in Flexible Vinyl End Caps 11. Food-Grade Mineral Oil 12. 120 V to 12 V Transformer 13. 12 V Alligator-Clip Harness 22
Underwater Light Project — Amazon Purchase Screenshots Addendum 1. Green COB LED Strip Amazon listing screenshot supplied by project owner. 23
Underwater Light Project — Amazon Purchase Screenshots Addendum 2. Main Polycarbonate Tube Amazon listing screenshot supplied by project owner. 24
Underwater Light Project — Amazon Purchase Screenshots Addendum 3. 1 in x 10 in Center Rod Amazon listing screenshot supplied by project owner. 25
Underwater Light Project — Amazon Purchase Screenshots Addendum 4. 1/4 in NPT Cable Gland Amazon listing screenshot supplied by project owner. 26
Underwater Light Project — Amazon Purchase Screenshots Addendum 5. 18/2 Power Wire Amazon listing screenshot supplied by project owner. 27
Underwater Light Project — Amazon Purchase Screenshots Addendum 6. Heat-Shrink Tubing Kit Amazon listing screenshot supplied by project owner. 28
Underwater Light Project — Amazon Purchase Screenshots Addendum 7. Rosin-Core Solder Amazon listing screenshot supplied by project owner. 29
Underwater Light Project — Amazon Purchase Screenshots Addendum 8. 5200 Sealant Amazon listing screenshot supplied by project owner. 30
Underwater Light Project — Amazon Purchase Screenshots Addendum 9. CA Glue and Activator Amazon listing screenshot supplied by project owner. 31
Underwater Light Project — Amazon Purchase Screenshots Addendum 10. 2 in Flexible Vinyl End Caps Amazon listing screenshot supplied by project owner. 32
Underwater Light Project — Amazon Purchase Screenshots Addendum 11. Food-Grade Mineral Oil Amazon listing screenshot supplied by project owner. 33
Underwater Light Project — Amazon Purchase Screenshots Addendum 12. 120 V to 12 V Transformer Amazon listing screenshot supplied by project owner. 34
Underwater Light Project — Amazon Purchase Screenshots Addendum 13. 12 V Alligator-Clip Harness Amazon listing screenshot supplied by project owner. 35
Glowforge® print settings Design id: 7BG1AYAUQM8XXFMYNIBF2FSD4UCRK Timestamp: Tue Aug 18 2026 22:02:07 GMT-0500 (Central Daylight Time) Version: 1.0 Step 0: #000000 Cut::Acrylic::Manual Step 0: #000000 Speed=131 Step 0: #000000 Precision Power=full Step 0: #000000 # of Passes=2 36
Glowforge® print settings Design id: 7BG1AYAGNWT1KP7KFJEHDFVOPYXF7 Timestamp: Tue Aug 18 2026 22:03:08 GMT-0500 (Central Daylight Time) Version: 1.0 Step 0: #000000 Cut::thick acrylic 1pass::Manual Step 0: #000000 Speed=131 Step 0: #000000 Precision Power=full Step 0: #000000 # of Passes=1 Step 1: #297200 Cut::thick acrylic 1pass::Manual Step 1: #297200 Speed=131 Step 1: #297200 Precision Power=full Step 1: #297200 # of Passes=1 Step 2: #9e5000 Cut::thick acrylic 1pass::Manual Step 2: #9e5000 Speed=131 Step 2: #9e5000 Precision Power=full Step 2: #9e5000 # of Passes=1 Step 3: #e53595 Cut::thick acrylic 1pass::Manual Step 3: #e53595 Speed=131 Step 3: #e53595 Precision Power=full Step 3: #e53595 # of Passes=1 37
Glowforge® print settings Design id: 7BG1AYAAIT5RPRU9T4WKR7EDWL9XH Timestamp: Tue Aug 18 2026 22:04:11 GMT-0500 (Central Daylight Time) Version: 1.0 Step 0: #000000 Cut::Acrylic::Manual Step 0: #000000 Speed=131 Step 0: #000000 Precision Power=full Step 0: #000000 # of Passes=2 Step 1: #297200 Cut::Acrylic::Manual Step 1: #297200 Speed=131 Step 1: #297200 Precision Power=full Step 1: #297200 # of Passes=2 Step 2: #548ab2 Cut::Acrylic::Manual Step 2: #548ab2 Speed=131 Step 2: #548ab2 Precision Power=full Step 2: #548ab2 # of Passes=2 Step 3: #9e5000 Cut::Acrylic::Manual Step 3: #9e5000 Speed=131 Step 3: #9e5000 Precision Power=full Step 3: #9e5000 # of Passes=2 Step 4: #e53595 Cut::Acrylic::Manual Step 4: #e53595 Speed=131 Step 4: #e53595 Precision Power=full Step 4: #e53595 # of Passes=2 38
Underwater Light Project - Formal Material Cost Report UNDERWATER LIGHT PROJECT Formal Material Cost Report 12 Volt and 120 Volt Product Versions Prepared August 19, 2026 Cost basis: supplied Amazon purchase screenshots, confirmed component quantities, and stated production usage. 39
Underwater Light Project - Formal Material Cost Report Executive Summary This report calculates the direct material cost to build one underwater light in each product configuration. The calculation uses the purchase prices shown in the supplied Amazon screenshots, the confirmed 50-foot power lead, the 10-inch acrylic center rod, the in-house acrylic component cost, and the stated consumption rates for sealants and adhesives. Calculated direct material cost - 12 V version $40.25 Calculated direct material cost - 120 V version $62.36 Incremental cost of 120 V version over 12 V version $22.11 Cost scope. These totals are direct material costs only. They do not include labor, packaging, shipping cartons, labels, sales tax, Amazon shipping charges (if any), laser-machine time, electricity, tool wear, rejects, warranty reserve, general overhead, or profit. Precision. Component costs are calculated from the stated pack quantities and usage. Solder is carried as a nominal allowance because the exact grams consumed per light have not been measured. Heat-shrink is costed by piece count from the 275-piece kit. 40
Underwater Light Project - Formal Material Cost Report 1. Common Cost Base - Both Versions Direct Materials Used in Every Light Component Purchase Price Purchase Qty. Usage / Yield Cost per Light Green 12 V COB LED strip $21.99 16.4 ft roll 8 ft per light; roll yields 2 complete lights $11.00 Main polycarbonate tube $21.99 6 tubes 1 tube per light $3.67 Acrylic center rod, 1 in x 10 in $22.99 10 rods 1 rod per light $2.30 1/4 in NPT cable gland $7.99 20 glands 1 gland per light $0.40 18/2 power wire $32.99 200 ft spool 50 ft per light; 4 lights per spool $8.25 Flexible vinyl end caps $38.99 50 caps 2 caps per light; 25 lights per pack $1.56 Laser-cut acrylic components N/A In-house cut set 1 complete set per light $2.30 5200 sealant $17.99 1 tube 1 tube per 5 lights $3.60 CA glue + activator $29.99 4 glue bottles + activator Approx. 25 lights per glue bottle; 100 lights per kit $0.30 Food-grade mineral oil $119.95 5 gallons Approx. 305 mL per light; approx. 62 complete fills $1.93 Heat-shrink tubing - internal joint $5.99 275-piece kit 1 piece per light $0.02 Solder - internal electrical joint $8.99 50 g spool Nominal allowance $0.05 COMMON MATERIAL COST PER LIGHT $35.37 41
Underwater Light Project - Formal Material Cost Report 2. 12 Volt Version Cost The 12 V version uses the common light assembly and adds a permanent alligator-clip harness at the free end of the 50-foot 18/2 power lead. 12 V Version-Specific Materials Component Purchase Price Purchase Qty. Usage / Yield Cost per Light 12 V alligator-clip harness $9.58 2 harnesses 1 harness per 12 V light $4.79 Heat-shrink tubing - clip connections $5.99 275-piece kit 2 additional pieces per 12 V light $0.04 Solder - clip connections $8.99 50 g spool Additional nominal allowance $0.05 12 V VERSION-SPECIFIC ADDITIONS $4.88 Common materials $35.37 12 V-specific materials $4.88 TOTAL DIRECT MATERIAL COST - 12 V VERSION $40.25 42
Underwater Light Project - Formal Material Cost Report 3. 120 Volt Version Cost The 120 V version uses the same 12 V light assembly and includes one 120 V AC-to-12 V DC transformer loose in the product box. The transformer is not installed inside the underwater light. 120 V Version-Specific Materials Component Purchase Price Purchase Qty. Usage / Yield Cost per Light 120 V AC to 12 V DC transformer $26.99 1 transformer 1 included loose in box per 120 V version $26.99 120 V VERSION-SPECIFIC ADDITIONS $26.99 Common materials $35.37 120 V-specific materials $26.99 TOTAL DIRECT MATERIAL COST - 120 V VERSION $62.36 43
Underwater Light Project - Formal Material Cost Report 4. Production Batch Cost Reference Production Quantity 12 V Material Cost 120 V Material Cost 1 light $40.25 $62.36 5 lights $201.27 $311.80 10 lights $402.54 $623.60 25 lights $1,006.34 $1,559.00 50 lights $2,012.68 $3,118.00 100 lights $4,025.35 $6,236.00 5. Costing Assumptions and Source Basis LED strip: $21.99 per 16.4 ft roll. Each light uses 8 ft; one roll produces two complete 8 ft assemblies, so the full roll cost is allocated across two lights. Main tube: $21.99 per 6-pack; one tube per light. Acrylic center rod: $22.99 per 10-pack; one 10 in rod per light. Cable glands: $7.99 per 20-pack; one per light. 18/2 wire: $32.99 per 200 ft spool; each light uses 50 ft, exactly four lights per spool. Vinyl caps: $38.99 per 50-pack; two per light, or 25 lights per pack. Laser-cut acrylic pieces: $2.30 total material cost per light for the complete in-house acrylic set. 5200 sealant: $17.99 per tube and one tube is consumed per five lights. CA glue: $29.99 kit containing four glue bottles; approximately 25 lights per bottle, or approximately 100 lights per kit. Mineral oil: $119.95 per 5-gallon pail. A nominal 305 mL fill is used for costing, yielding approximately 62 complete lights per pail. Heat-shrink kit: $5.99 for 275 pieces. One piece is allocated to the internal joint in every light; the 12 V version receives two additional pieces at the clip connection. Solder: $8.99 per 50 g spool. Because solder mass per light is not measured, a nominal $0.05 internal solder allowance is used for both versions, plus another $0.05 for the 12 V clip connection. 12 V alligator-clip harness: $9.58 per 2-pack; one harness per 12 V light. 120 V transformer: $26.99 each; one included per 120 V product. 6. Cost Difference Between Versions The 120 V version costs $22.11 more in direct materials than the 12 V version. The difference is primarily the included $26.99 transformer, offset by the fact that the 120 V version does not use the alligator-clip harness or the additional clip-connection solder and heat-shrink. 44
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