What is the best way to remove air bubbles from investment before
casting, other than using the vacuum method? If you have any
interesting little tips about casting I'm sure there is many people
out there who are interested. Thanks, Ray.
What’s the best way without a vacuum? Don’t put them there in the
Mix your plaster, paint it onto your model with a soft thick brush,
put the model and rubber sprue base into the flask, then use the
bombs away method to fill the flask.
*FYI: The bombs away method is pouring your liquid from a height so
that you get a very thin stream of liquid. You pour your liquid so
that it hits the model, and fills the flask. There will be no bubbles
if you get the height right and the stream thickness.
Or you could use a hand massager, this also works, but I’ve been
accused of being kinky
Regards Charles A.