Hi
My vacuum pump is able to pull max "-0,85 bar". This value is ok for degassing resin and silicon rubber ?

Thanks
Andrea

Should be fine, -0.85 bar is quite a lot when you think about it -

1 bar = approx 14.7psi and -0.85 is approx -12.3psi so this creates a pressure differential of approx 27lb/psi (27psi).

Blast 25psi out of your airbrush and you'll see thats a fair bit.

Of course, the real proof is in the testing - it should be more than enough for resins and resin casting silicon but metal casting silicon (harder/tougher) may take longer in the vacuum.

Lee

I Pressure cast It makes all the (possible) bubbles really really tiny..... I use a Old 3 gal Pressure paint pot. run the compressor to 25-30 psi.....