The print Burn Out procedure
The most important part is the 400 degree Celsius area, This is the temp when the resin is melted.
I used the Kerr Cast 20 investment and left the ready for the night. Started the burn out in the next morning.
Printing and casting a silver ring.
Printer – project 1200 from 3D Systems
Resin – Goldfish
Investment – Satin cast 20 from Kerr
Casting – with an induction heating centrifuge
Printing in 166 min, results same as the green (very good)
Short wash in IPA the print in the IPA for 3 min the Ultrasonic cleaner
Short wash with clean IPA
Dry and 6-10 times x 10 min cure in the Projet 1200 ultra-violet chamber. More than one-hour curing
Preparing the ready-print in a 2.5”x2.5” with liner.
Adding the investment and let sit overnight
Burn out (temp are in Celsius)
100 c 20 min
150 – 50 min
350 c – 50 min, the wax is gone, and the resin starts to burn
Turn face up
470-450 c – 40 min all the resin is gone
730-700 c 60 min
Cool to 500 c stays 60 min
Cast – 100% new silver– perfect results
Clean 10 min Ultrasonic cleaner
10 in warm 10% sulfurous acid
Wash, fast polish of the shank to see the results, in the photo before polish it looks like it is not smooth and has cavities, it is the coloration of the silver; The cast is as good as any WAX casting