On going process...

I'm making some progress on my vacuum chamber for casting large resin forms. Unfortunately, it's been an uphill battle and constant setbacks, but hopefully, I'm close enough to get a good bubble free (well almost free) final casting of this commission I've been working on.
Anyway, I've made 3 versions of this chamber - the first out of wood and rubber, the second out of clear acrylic and the third out of welded steel. It's surprising how much pressure can be exerted by less than 30 lbs but I've reinforced my steel with cross members so hopefully, I'll be able to get it to suck more.
Wish me luck!