[Milsurplus] DIY Vacuum Chamber

[Facility 406]

On 9/21/2026 13:19, Jim Whartenby via Milsurplus wrote:
> One way to easily remove water vapor is with a vacuum.  One can easily 
> convert an old pressure cooker into a vacuum chamber for perhaps under 
> $30 if you already have a hobby compressor / vacuum pump.  The holes in 
> the cover are national pipe threads so just remove the old hardware and 
> substitute a vacuum gauge, ball valve and a tubing adaptor along with a 
> new gasket seal.  Plug any unneeded holes with the appropriate NPT 
> plug.  I use a small Gast air compressor / vacuum pump with good 
> results.  This example will hold a decent vacuum for well over a week.

I've thought of that in the past, but have been worried of the bottom 
imploding.

One idea I had was to bolt an Al plate to the bottom, something maybe 
3/8" thick.

Kurt