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geekhack Community => Keyboards => Topic started by: ___q on Wed, 19 June 2013, 09:58:31

Title: Where to get foam for under pcb?
Post by: ___q on Wed, 19 June 2013, 09:58:31

On some of the used custom keyboards I've acquired, there has been a piece of foam in the bottom of the case under the PCB, presumably to deaden some of the bottoming-out sound by filling up that hollow space.  These keyboards also sound great.

I have a Filco in one of the vortex aluminum cases which I did not put any such foam in, and it doesn't sound nearly as nice as the customs.  Where can I buy foam like this which is safe for the pcb?  Searching on Amazon for words like 'foam' and 'memory foam' isn't particularly helpful.

Thanks!

Title: Re: Where to get foam for under pcb?
Post by: damorgue on Wed, 19 June 2013, 09:59:51

I believe the one commonly used is actually a shelf liner.

Title: Re: Where to get foam for under pcb?
Post by: jcrouse on Wed, 19 June 2013, 10:00:06

Michaels (hobby store). Cheap and many nice colors to choose from, if that matters.

Title: Re: Where to get foam for under pcb?
Post by: damorgue on Wed, 19 June 2013, 10:01:26

http://www.amazon.com/Grip-Shelf-Drawer-Liner-Black/dp/B000KFSOFI
(http://g-ecx.images-amazon.com/images/G/01/ciu/f9/26/995ce03ae7a084a4534ef110.L.jpg)
Rubber shelf liner, like the one above is the one I was thinking of.

Title: Re: Where to get foam for under pcb?
Post by: CPTBadAss on Wed, 19 June 2013, 10:04:59

I used a rubber/foam kitchen drawer liner from Target.

Title: Re: Where to get foam for under pcb?
Post by: Halverson on Wed, 19 June 2013, 10:05:59

I line the bottom of my boards with nudes of CPTBadAss.

Title: Re: Where to get foam for under pcb?
Post by: The_Beast on Wed, 19 June 2013, 13:05:59

Quote from: Halverson on Wed, 19 June 2013, 10:05:59

I line the bottom of my boards with nudes of CPTBadAss.

I see how it is!