I've moved this question, because home user or not, I think you really want to talk to a chemical engineer. A 10 liter capacity chamber, made of glass, is pretty darn heavy. I don't know enough to say definitively that it can't support its own weight, but such a rig would be difficult to ship, move, store a use safely. You may not be able to find someone who'll build it for you. You may also want to re-evaluate why you can't use stainless steel.