21 Plate Dry Cell

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How to build a Dry Cell

Hydrogen Generator

by Kerry Harrison


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Materials List

1. Plastic plates 1/2 x 8 x 8 - 2 required2. Stainless steel electrode plates 316L alloy 20ga 6 x 6 - 21 required

3. Rubber gaskets - 29 required - Cut from 0.04 thick rubber tub liner gasket - Available at Lowes Home Center

4. 1/4 - 20 TPI x 3 zinc plated bolts - 9 required

5. 1/4 - 20 TPI x 3 1/2 zinc plated bolts - 3 required6. 1/4 - 20 TPI x 3 brass bolts - 2 required - Available at Lowes Home Center

7. 1/4 - 20 nuts zinc plated - 12 required

8. 1/4 - 20 wing nuts zinc plated - 2 required9. 1/4 - 20 nuts brass - 10 required Available at Lowes Home Center

10. 1/4 flat washer zinc plated- 18 required

11. 1/4 flat washer brass - 2 required Available at Lowes Home Center

12. 1/4 ID x 2 length vinyl tubing - 12 required13. 1/4 NPT x 3/8 hose barb plastic or brass fitting - 2 required.

14. 1/8 x 1 x 1 x 8 aluminum angle for mounting brackets - 2 required

Copyright 2008 Harrison Specialties LLC

The purchaser of the plan is granted the right to make the finished project contained in the plan for personal use or

a gift only. Any other use of the plan not specifically authorized in writing, such as copying (in whole or in part),

making precut kits, mass production or commercial use is strictly prohibited and will not be tolerated. Federal lawprovides severe civil and criminal penalties for the unauthorized use of copyrighted works, including plans and

patterns.

Purchaser further agrees to hold harmless the author, publisher, seller and all others involved with the productionof this plan for any property damage or personal injury involved in the production of this project.

Back plastic plate

Front plastic plate

Hose barbs

Neutral plates Positive and Negative plates

Rubber gaskets

Mountingbrackets Mounting

hardware

Vinyl

Tubing

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Be advised that hydrogen gas is highly flammable and explosive. By building this genera-

tor you assume full responsibility and liability for its use and any damage to property or

persons that may result from the production of hydrogen gas. Builder should be knowl-

edgeable before attempting any projects or experiments.

Its a good idea to completely read all the instructions first to get a good overview of this project.

MAKE THE PARTS1. The 1/2 thick plastic front and back plates are cut to size, drilled and tapped according to the drawings.

2. Stainless steel 316L alloy is the best choice for the electrode plates for the best hydrogen gas production.

Plates are cut to size and drilled according to the drawings.

3. The rubber gaskets are cut from rubber tube liner gasket according to the drawings. Most home stores shouldhave this material in bulk.

4. Cut the vinyl tubing to 2 lengths

ASSEMBLY

1. Place a 1/4 flat washer over each of the nine 1/4 x 3 bolts.

2. Insert nine 1/4 x 3 zinc plated bolts into the top and side holes of the back plastic plate.3. Insert three 1/4 x 3 1/2 zinc plated bolts into one of the aluminum mounting brackets and then thru the bot-

tom holes of the back plate.

4. Insert two 1/4 x 3 brass bolts into the upper corner holes in the back plate.

5. With the assembly laying with the back side facing down and the bottom closet to you, place a nut onto the

brass bolt on left side, and a washer onto the bolt on the right side.6. Place the nine 2 length vinyl tubes over the zinc plated bolts.

7. Place three rubber gaskets onto the back plastic plate. Three gaskets are used here to allow more room for wa-

ter in the generator.


Mounting

bracket

1/4 - 20 boltspass thru front

plastic plate

Vinyl tubesover bolts

Back plasticplate

Brasswasher

Brass nut

3 rubber

gaskets

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8. Begin stacking the plates by placing one of the plates with only one corner cut off over the brass bolt on theright. This is the positive bolt.

9. Thread two brass nut onto the positive bolt. Tighten one finger tight against the first plate, leave the other

loose.

10. Place four more gaskets and plates with both corners cut off onto the plate stack . These are neutral plates.

11. Place one of the plates with only one corner cut off over brass bolt on the left. This is the negative bolt.12. Thread two brass nuts onto the negative bolt until they contact the negative plate. Leave them loose.

Positive boltwith two nuts

over the first

positive plate

4 neutral plates& gaskets

stacked on top

of the firstpositive plate

Negative bolt

with two nuts

over the first

negative plate

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14. Place one of the plates with only one corner cut off over brass bolt on the right. This is a positive plate.


16. Place one of the plates with only one corner cut off over the brass bolt on the left. This is a negative plate.

17. Thread a brass nut onto the negative bolt until it contacts the plate. Leave it loose.



Positive plates

with nuts over

the positive bolt

Negative plateswith nuts over the

negative bolt

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19. The last plate with only one corner cut off is placed over brass bolt on the right. This is a positive plate.

20. Place a brass washer on the brass bolt on the right.

21. Place three rubber gaskets on the stack. The photo only shows one gasket but three should be used to allowmore room for water in the generator, just as you did next to the back panel.

22. Place the front plastic plate on the stack.23. Place the remaining angle bracket over the three bolts on the bottom.

24. Place a 1/4 flat washer over each of the nine 1/4 x 3 bolts.

25. Thread a 1/4 nut onto each of the 1/4 bolts.26. Begin tightening the nuts to compress the plate stack evenly. Be sure to keep an eye on the nuts on the brass

positive and negative bolts so the positive and negative plates are not bent during tightening. It is very difficult

to describe how tight to tighten these bolts. Using a socket on a long extension and tighten each nut in a clock-

wise rotation by hand works well. Go around the cell repeatedly until no more loose nuts are found. The gen-erator compresses in thickness about 1/2 inch.

27. Thread a brass nut and wing nut onto the two brass bolts on the outside of the front plastic plate. The electrical

connection is made under the wing nuts.28. Apply Teflon tape over threads on the hose barbs, thread them into the tapped holes in the plastic plates.

Your hydrogen generator is complete.

Be advised that hydrogen gas is highly flammable and explosive. By building this genera-

tor you assume full responsibility and liability for its use and any damage to property or

persons that may result from the production of hydrogen gas.


Use 3 gaskets here.Photo only shows 1

but 3 are needed.

Positive plates

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Photos of the completed cell

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21 Plate Dry Cell

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