Originally Posted by
bford903
Check it out. Early castings from the Visijet FTX Green material from the Projet 1200 3D Printer before we figured out the proper procedure. This is what you don't want.
The last picture is a 15mm sphere put into the oven by itself, no flask, no investment. No reaction until 800 degrees and then boom. The lower part is the sphere and the bubble on top is the heated resin from the inside. This is what happens during the casting process. The resin expands as it heats, cracks the investment, and leaves behind this coal-like crud inside which ruin your castings.
Holes and pockmarks in print walls
Today, 09:14 AM in General 3D Printing Discussion