If you look back upon my previous work you will find that I have been experimenting with vacuum metal deposition.
I have been attempting to vaporize metal and have it coat glass under a vacuum. There will be more on this once I get the process working flawlessly.
Ideally this is done under a very deep vacuum using a diffusion vacuum pump.
I am attempting to do this without the use of a diffusion pump.
The vacuum chamber that I have been using is showing signs of melting and burning which to say the least is less than ideal for the task at hand.
The first problem is the type of material used for the chamber base. The second is in dealing with the heat generated and the third is the vacuum seal.
I have come up with a solution to all three in the most unlikeliest of places...
Step 1: SAFETY!
This experiment has some risks that you should be aware of!
The first is that it is not electrically grounded. It is best to not touch the chamber assembly while it is operating. This experiment uses a variable transformer connected to a step up transformer(240V 15A).( these are not shown here but will be discussed in another Instructable)
The second is that the glass jar shown is not safety rated for a vacuum. It is a very thick wall preserving jar. If you want to try these experiments it is best to have a vacuum shield while running under a vacuum. Mine was removed for the pictures.
The third is that the first time you see metal actually bonded to glass you may become addicted!