11-27-2010, 08:26 PM
"Double-sided" parts are doable if you build a two or three-piece mold, paying attention to draft angle, part depth, parting lines and then give the mold plenty of "air runners," small diameter runners that terminate at the "top" of the mold ("top" being where the "pour" opening is) to allow "trapped" air to escape from those bottom corners. Those runners are to help eliminate voids caused by trapped air in your cast part.
It is doable, and not all that difficult if you take your time and think out where the best places for parting lines will be, and then ... you spend the time to build the mold sections, put them together and secure them with tied up string, large rubberbands, clamps, or whatever (so they won't come apart or move. (There are a couple of tricks to use to get the multiple mold parts to key together with the right orientation. And there is an incredibly good feeling at the other end when you pull your first beautifully cast part from the mold!
It is doable, and not all that difficult if you take your time and think out where the best places for parting lines will be, and then ... you spend the time to build the mold sections, put them together and secure them with tied up string, large rubberbands, clamps, or whatever (so they won't come apart or move. (There are a couple of tricks to use to get the multiple mold parts to key together with the right orientation. And there is an incredibly good feeling at the other end when you pull your first beautifully cast part from the mold!
biL
Lehigh Susquehanna & WesternÂ
"America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves." ~~Abraham Lincoln
Lehigh Susquehanna & WesternÂ
"America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves." ~~Abraham Lincoln