Selfmade vacuum chamber, plexiglass thickness

trancefreak · Post by **trancefreak** » Mon Nov 17, 2008 8:36 am

Hi all,

I plan to build my own vacuum chamber and did some research here
on the forums.

I plan to use a thick drain pipe with 19,6" in diameter.
These ones have a very thick wall and are able to handle high pressure so I think they are also a good choice for a vacuum chamber.

I came across a post here on the forum where someone used a 1/2"
plexiglass with a smaller diameter (I think) and that one imploded.

Does anybody know how thick the plexiglass should be when having a
diameter of about 19,6"? Is 1,3" (35 mm) thick enough?

Has anyone experience in calculating the needed thickness?

Thx in advance!
Christian

modelnutz · Post by **modelnutz** » Mon Nov 17, 2008 8:06 pm

The vacume chamber I'm using is just about that size and the top is one inch thick plexi.
The unit is an industrial grade unit....I'd recommend going with that thickness for saftey.

trancefreak · Post by **trancefreak** » Tue Nov 18, 2008 3:32 am

Hi modelnutz,

Thanks very much for the answer, this helps me a lot!

Yes, I'll go with that thickness.

Thx!
Christian

DX-SFX · Post by **DX-SFX** » Thu Nov 20, 2008 9:06 am

Don't be tempted to underestimate the forces involved. If you're using a pukka high vacuum pump, if the lid breaks, it will go with one hell of a bang.

trancefreak · Post by **trancefreak** » Sat Nov 22, 2008 5:39 pm

Yes, I'll use a 1,18 inch (3 cm) thick plexiglass just to be on the safe side.

Thx all for the replies!

Christian

DX-SFX · Post by **DX-SFX** » Sun Nov 23, 2008 9:46 pm

3cm (28.6mm = 1 1/8") thick should be perfect for that size.