7/8 plywood?

martin joe

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HI.. Helping my brother out with some cabinet repairs.. It's a taito Jamma cab with some water damage on the lower end - I figured the sides we could fix up with a little glass and/or bondo, but the bottom panel is warped and screws up the drawer deal - the whole point of the jamma cab. The original is roughly 24x25", and is particle board.

Anyway, I was wondering if anyone out there has a line on 7/8" plywood or particle panels, (or 22mm for our metric friends - looking at you Canadia).. ? Or possibly some thoughts on what's good to replace it with. Bonus points if you have some 7/8 lying around and you're in the SF bay area.. We can drive to your house and sit in your star wars chair.

Thank you, and watch out for snakes.

http://www.youtube.com/watch?v=jGIGYP0rX9A
 
What if we don't have a SW chair? You can sit in my shiny white chair with a hole in it if you like. His name is John.
 
It was probably really closer to 3/4". Wood gets bigger when it takes water damage. I hear they sell it at home depot.
 
It was probably really closer to 3/4". Wood gets bigger when it takes water damage. I hear they sell it at home depot.

Yeah, that's the trouble.. it really does measure out to just an rch under 7/8 in the spots where the water didn't get to. And it's flush with the sides on the bottom. I think it was: 1) probably ordered specifically in a large run by Taito, 2) manufactured overseas (hence the 22mm standard metric underlay), or 3) U.S. companies stopped manufacturing 7/8 particle board sometime in the 90's. 3/4 would work of course, but I get nuts about replacement hardware. Fargan US companies and their stupid measurements, though.. (ex. 2x4 = 1 1/2x 3 1/2 - and that's bullshirt about the drying process - buildings from the 30's and earlier have honest 2x4 studs..) maybe it was rated 1 inch (really 27/32) I don't know. Anyway, furiousity.

Georgia Pacific apparently makes a 7/8" furniture-grade plywood, but I'll be damned if I can find anyone that carries it. Otherwise it's 3/4", 1", or 1 1/8" - and those are for ply or OSB underlay - not a true replacement particle board. (which raises the question - why for the love of god did manufacturers use particle board? The machine was expensive enough as it is - why cheap out and use something just pennies cheaper per Sq ft that weighs a ton, is easily damaged, and sucks in water like a Las Vegas mini golf course?

and with that, i say GOOD NIGHT. argh.

Really though.. maybe someone's got a spare 7/8 back panel that's just taking up space behind a door. ?? :)
 
They used to make 7/8 plywood but that was a long time ago. Kinda like how a 2x4 used to actually measure 2x4. I dont know of any arcade machines that used it. You might check at a lumber yard and inquire about furniture grade wood. Alot of times you can get it in odd sizes.
 
how to

Take a sheet of 3/8" plywood.
Glue it to a sheet of 1/2" plywood.

Congratulations, you are now the proud owner of a sheet of 7/8" plywood.
 
Take a sheet of 3/8" plywood.
Glue it to a sheet of 1/2" plywood.

Congratulations, you are now the proud owner of a sheet of 7/8" plywood.

Yeah, that's what it's going to have to be I'm afraid.
I'm just disturbed by the fact that I don't have a nice hydraulic press to really bond the two together - and that there will be an even number of plys. (say 5 +7, leaving a vulnerable glue joint at the midsection - there's a reason plywood always comes in odd numbers of layers). Particle board is another thing, as you'd need a pretty decent press setup if you want a good bond (the moisture in the glue will swell the bonding layers, leading to what I'd call a laughing laminate, with the edges more prone to curling at the sides, depending on the grain.) But then I'm sorta OCD when it comes to this sort of thing.

Given that it's home use and not commercial, it probably won't make a difference though.

thank you. I'll see what we can come up with.
 
Likely isn't worth the trouble.
Just buy a thick sheet of plywood and use it.
Your not matching up to another piece, so being an exact thickness is unlikely to matter.

Now if it was a patch for a side, yea, you would have to be exact!
 
Likely isn't worth the trouble.
Just buy a thick sheet of plywood and use it.
Your not matching up to another piece, so being an exact thickness is unlikely to matter.

Now if it was a patch for a side, yea, you would have to be exact!


If its too thick, the T-molding won't be wide enough.
Laminating two pieces of ply isn't that hard, use cinder blocks to even the glue pressure.
 
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