Resin Addict Forum

I have bought a second since I recommended this pot. Are you getting a vacuum pump too?

Thanks Fleafa,

I was just going to go with the pot, try and source a suitable compressor, and go from there.

If I'm honest I'm a little confused about the vacuum pump side of things - is that to vacuum degass using the same pot?

Thanks.

Vacuum removes most of the bubbles introduced by mixing, as well as some air pockets.
Pressure reduces the size of the bubbles and increases the density of the cast plastic.

Ah OK, thanks.

I might start with the pressure pot and compressor, then add the vacuum pump etc further down the line.

From what I've read I should see a lot of improvement with the pressure pot alone?

The vacuum side of things seems like a pretty straightforward conversion, I'm sure when I come to it, it won't be that simple!

It depends on the parts. Using pressure alone you will still need to have proper gates and vents designed (resin in the gate, air out the vent), which can be a pain for small parts.

thanks mangozac,

at the moment my molds are really simple, one part molds, with the odd 2 part mold as well, nothing really small, maybe 2cm at the smallest.

I'm assuming I don't need to do anything special with the one part molds, I'll have a read up on gating/venting and see what I need to do for the 2 parts, thanks for pointing it out.

I'm still trying to settle on a compressor so I have some time to read up!