1. siphon set up
2. yes, using a large/high strength magnet would grab on to metal debris you don't want running through the gun
3. no need for ceramic wool, but if you are set on getting it (very expensive) call a local stove facilitly. They will have the door gaskets and the wool you want. I used regular R-15 house insulation with the paper pulled off. If you ever open up a standard kitchen oven, you will see why you don't need ceramic wool.
4. we will be using a small shop vac for the dust. You can see the hole in the upper right hand corner of the back wall of the blaster. Kinda small for now, but I can always make it bigger
5. I am using the guts from an electric house oven for it. I will use the top and bottom elements wired in series and hopefully that will heat it up enough. If not, I will have an insulated shelf that I can block off sections of the big oven that I am not using. Check craigslist for cheap electric ovens and you will actually find some that are free. Wire up your 220 and you are good to go
That should get you in the right direction. The sheet metal for the oven is 18ga BTW with 3" thick walls. You can use steel studs to frame your walls with which would give you a nominal size of 3.5" thickness.
Hey fitzy, send me your email addy for the blast cabinet DWGs. They will get you close enough to start rolling on your project
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