Dear Ken, Please note: If you knock your flask out cold you MUST
have a great vent system. These air particles can eventually kill
you. The silica dust is a nasty thing. Coal miners get black lung.
Casters who aren't careful get Silicosis.
Hi Ken, Todd is absolutely correct… the dust is dangerous… It is
easy to build a machine using a hydrolic press ( used by car
mechanics , Cheap used…) to press the investment out of the flask
when it is cold…If you also mount 2 small air hammers ( also from
a mechanics used tools) on both sides of the flask, it will hammer
the sides of the flask while the press pushes the investment out…
we had built such a device about 10 years ago… put a big bucket
underneath to catch the tree… wrap the whole thing in plastic or
rubber and hook a blower/dust collector to it and you have a clean ,
dry breakout system.
With another air hammer, if you get very powerful vice grips or
something like it to grip the tree button, and make a device to hold
the vice grips… you can use the automotive air hammer to hammer
against the button… and all the investment will come off the tree
( actually about 98 %)
The Tivac insert will help your castings and it will ease the
Best Wishes, Daniel Grandi We do casting/finishing for designers,
jewlers and people in the trade. Contact firstname.lastname@example.org