General Failure has been busy lately and gives us another article on how he has developed a method for pouring resin with no bubbles.

Check out his article

Pouring Resin Without Air Bubbles

This is good stuff. Thanks for posting it.

Jan... good article. As a fellow "Cast-a-holic", i find that in addition to painting a thin layer of Silicon onto the object when creating the mold, it also helps to place the wet RTV and the container on top of your clothes dryer. Throw in a tennis shoe or several towels, and let them spin for about 10 minutes. The vibration of the thumping dryer helps dislodge even the smallest bubbles, delivering a super-clean mold to start with.

Before pouring the resin into the new mold, I first pour in a thin batch of plaster of paris...this is much cheaper than resin for testing purposes, and will serve the same purpose to help you find where air pockets develop.

ZerO-CoOl suggested to place a drill on the tabletop to create such vibrations. i now use the compressor (airbrush) on the tabletop. That vibrates the air bubbles straght out. Of course, this only works if you have these "evacuation canals" installed to let the bubbles escape.

good tech tips. Slight correction - don't use a vaccum to get resin bubbles out, as you decrease the air pressure, that will actually allow the bubble to get bigger! A pressure pot gives great results for the resin pouring stage of casting - the incresed air pressure shrinks the bubbles down to mere pin pricks.

Vacuum doesn't only make the bubble bigger : it s u c k s the bubble out of the resin.
This is still the most used technique by professional resin casters.
Pressure pot works well, too.