I've got in contact with R&R europe and as soon as the weather permits it I'll receive a 5 gal drum of suspendaslurry along with the 4 bags of sand (shipping in thermal containers is just too expansive, I prefer to wait two weeks)!
My intent is to work with 3d printed pieces and make small casts (my furnace has a maximum load of 6 pounds of bronze for now).
I've seen that some of you are also working with 3d printed patterns (David I've seen your videos on youtube if you're aonemarine ?)
And some with ceramic shell.
Maybe some of you have some experience with 3d printing and ceramic shell ?
I've thought about using PLA (easy to print, and apparently it burns out nicely), moldlay (as it's made for that) and clear resin (from formlabs, someone on their forum showed some pictures of a sword guard made this way).
My main concern is the burnout and shell firing.
Is it possible to directly use the 3d prints or is it necessary to use the 3d print to mold a wax pattern ?
For small parts (example of test parts below) is it possible to use a torch to burn the pattern and fire the shell ? (propane torch, weed burner,...) ? Or is a burnout furnace absolutely required ?
I think that I've seen a video of jagboy and a weed burner hitting a ceramic shell, did you used a furnace to fire the shell or only the torch ?
Here is a test I'll be using for casting as it's my model (3d scan of a cat statue), quite easy and smooth and the result should looks nice in bronze (picture on thingiverse is from a print in a metal filled plastic, polished in a tumbler) :
For a first test I'll try something like maybe 2 inch tall ?
What do you think ?
This thread is as much a question thread as my own thoughts and findings.
Hope I can get a nice results with ceramic shell and 3d prints!