Polymaker PolyCast Filament 1.75mm for Investment Casting 0.75kg, 3D Printing Filament for Lost Wax Investment Casting, Similar to Wax Filament for Metal Casting Plaster Cleanly Burn Out

Burns out great, good detail, clean prints on Bambu!

This product burned out 100% it looks like. Other Poly products like polymax and polysmooth will print so much better. But these other polys will not burn clean for casting. Polycast will burn clean. You will get ash from the others. I have used at least 10 rolls and getting the settings right is still an ongoing process. I am now using 60 degrees C, for the bed and after 5 layers going up to 75. this will keep the part stuck. When the bed cools off the part will break off. Prints well enough to get a good looking casting. You can sand the part to get lines out. Put it in polisher for a smooth finish. Using the prints for lost wax casting. If you are using for silicon casting or epoxy cast maybe use a better printing product like polymax. REX

I found this printed pretty well. It wasn’t as clean and high-quality surfaces as I was getting with PLA, but I could’ve probably dialed it in a little better. It burned out really well it was a noticeable difference from the PLA during the burnout, worth it but not a whole lot better than pla. I’d say if you are just doing g it for your self pla with super thin walls is fine, this is worth it if the extra quality really matters to you, keep in mind pla is 10-20$ per kg. This is 66$ per kg.

Prints really well! Was able to cast complex geometries. Very little ash, if any.

yet to try this stuff. but i love the concept and everything came looking as advertised. if it's no good I promise I'll be back to say so. but I suspect it's going to be great

This filament DOES NOT LIKE being printed above about 195°C (strings EVERYWHERE by 205 & chars by 220), so you have to keep your extrusion rate under tight control if you aren't using a volcano or goliath hotend. Besides that, just be wary of the shrinkage as it starts to melt (broke off some small, deep holes in my first couple investment casting attempts, leaving weird random vids in the finished pour) & be sure to keep your final burnout temperature for long enough for 100% of the filament to burn out & you can get some really nice results.

Last year I bought 2 polycast filaments, everything was great, shipment arrived at the according time frame but the issue was that one of the filaments was a Polymax PLA (which is cheaper than the polycast). We couldn't make a refund request since we didn't realize this after like 2 months of buying it because it was a buy for just testing the polycast material so we didn't open the box until two months later. Other than that the material is an amazing quality and it completely reached our expectations. I just hope that now that we are buying more everything arrives as expected.

The product prints good with the right settings The investment patterns burn out good with the right heating schedule I'm using a kiln made out of dirt and garbage.