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Old 17th February 2010, 07:11 AM   #1
dasein is offline dasein  United States
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Default crazy idea for chassis material?

Hey guys!

I'm not sure if this is insanity or not, but I'm thinking about rebuilding my gainclone amp. I was thinking of what materials I could use for the case and I thought why not cut up something that's a little easier to work with than metal?

Would it be crazy to chop up a plastic cutting board and make a chassis out of that? Or maybe use a tupperware container as a chassis?

Is there a reason that it wouldn't be electrically safe to do? I really don't care how it looks externally as long as it sounds good. I figure I can ground it properly to mains earth without worrying about a chassis ground since the chassis is nonconductive.

Is this a terrible idea?
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Old 17th February 2010, 07:15 AM   #2
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I've certainly given consideration of using one of those "healing" cutting boards as the top plate for a tube amp -- even went out and bought one for the purpose.

dave
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Old 17th February 2010, 07:17 AM   #3
dasein is offline dasein  United States
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Originally Posted by planet10 View Post
I've certainly given consideration of using one of those "healing" cutting boards as the top plate for a tube amp -- even went out and bought one for the purpose.

dave
Would it be ok to make an entire chassis out of it? Obviously there would be metal heatsinks on top but for the other 5 sides?
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Old 17th February 2010, 08:42 AM   #4
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I don't see why not. No more dangerous than the wooden boxes or plastic project cases people use,

dave
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Old 17th February 2010, 04:02 PM   #5
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Using plastic, such as a cutting board or a tupperware container shouldn't be an issue in regards to electrical safety, as plastic is non-conductive. The only thing you need to watch out for is radiated noise getting into the circuit you are housing. A metal enclosure offers the advantage of providing a certain amount of shielding to radiated electrical and magnetic noise. This level of shielding does depend upon the type of metal used however, among other things.

Peace,

Dave
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Old 19th February 2010, 08:27 PM   #6
trd1587 is offline trd1587  Canada
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I would use decorative small bricks and take a concrete shower panels as a base
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Old 19th February 2010, 08:34 PM   #7
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I would love to use a copper chassis. I never like the idea of using plastic or wood chassis (they do not avoid RFI).
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Old 19th February 2010, 08:40 PM   #8
SY is offline SY  United States
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Quote:
Is there a reason that it wouldn't be electrically safe to do? I really don't care how it looks externally as long as it sounds good. I figure I can ground it properly to mains earth without worrying about a chassis ground since the chassis is nonconductive.
Be careful of the thermal rating. Most of those cutting boards are polyethylene, which has a heat deflection temp in the 70-90C range and melts at 100C.
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Old 19th February 2010, 09:00 PM   #9
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Does a chassis made of flammable materials pose any significant risk of a fire hazard?

Looney
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Old 19th February 2010, 09:12 PM   #10
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Originally Posted by Looneytunes View Post
Does a chassis made of flammable materials pose any significant risk of a fire hazard?

Looney
Safety first!
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