Help with plates

[j1walters]

I was wondering if these plates on ebay sound like a bad idea.

http://www.ebay.com/itm/316L-stainle...ht_2320wt_1165

From what I research on here all the time, my gut is telling me yes.

If I was to get my own sheet metal(SS316Ga), do I blast both sides VERY lightly? If I can't get my hands on media blasting due to price, what is an alternative to media blasting?

[Havens78]

I was wondering if these plates on ebay sound like a bad idea.

http://www.ebay.com/itm/316L-stainle...ht_2320wt_1165

From what I research on here all the time, my gut is telling me yes.

If I was to get my own sheet metal(SS316Ga), do I blast both sides VERY lightly? If I can't get my hands on media blasting due to price, what is an alternative to media blasting?

If its really 316L that's really what you need for your plates. If you can't media blast, use a sanding block and 30 or 40 grit sandpaper. Sand in an X pattern then horizontal and finally up and down in the direction of the gas going out. And when I say sand I don't just mean a little bit, by the time you finish you should have removed the surface of the metal from the plate. I won't lie to you this will be a lot of work. This is not as good as media blasting but I understand the cost factor.

Remember to look up "Passivation", and weld-on through the forum search. These will help your process along while building your reactor.

I added some pics of some plates I had to sand before media blasting them. Don't take it as gospel, its just my experience with plate preparation.

Havens

[j1walters]

What are the rectangular holes for on the top and bottom of your plates? Also, what is an ideal size for plates? I am thinking of making mine rectangular with hho traveling the short distance upward and out the top.

[Havens78]

Those plates came from a kit that I purchased before I found all the information here and i was working on improving the unit, please don't take them as a reference for your future build.

A rectangular setup would be best if you have the room, and I would size the plates for what you are needing production wise. Remember 1/2 Amp per sq. in of surface area, so if you need 1lpm you'll need 28 sq. in on side of one plate for a single stack. If you want to do two stacks you can cut that in half so your setup would be +nnnnn-nnnnn+.

If you have a way to cut slots for the gas-outlets at the top of the plate those are best, with an inlet hole that staggers from left to right near the lower part of the plate. You want as much distance between the inlet holes as you can with allowing your inlet hole to still be 1" away from your gaskets.

Make any sense?

[j1walters]

I planned on doing a 14 cell -nnnnnn+nnnnnn-. The only thing troubling me right now are the ports. When I place the input and exit port, do I have ports on both sides of the cell or just one? Should I have two barbs for input and two for exit? I know to keep ports an inch away from sides.

Lastly, in order for a great escape for hho out of the exit port, what kind of holes should be on the upper portion of the plates. I have seen some straight holes down the middle and three holes horizontally. Myoldyourgold stated in one post on reduceyourfuelbill.com to have slots instead of round holes. I am thinking of doing sideways slots (putting in a quarter sideways), but I wonder how big the slot and should I do three straight across the top of the cell.

Thanks for looking at my posts by the way.

[j1walters]

so your saying don't get the plates from ebay, but buy from online metal store and do my own sanding and passivation?