I’ve been trying for the past month to print a flexible model of a human tongue using 50A resin. I keep running into three issues. 1) The resin tears if the outer shell is less than 0.05" thick. 2) the model is placed on wires so that the tongue can hold a position. The tubes for these wires fill shit with resin, even with a tube diameter of 0.1". 3) The support density at the bottom of the model is so dense that I basically have to tear the bottom of the model off.
The model is used for speech language pathology lessons to display tongue positioning. I currently use TPU on a filament printer but thought that 50A would make a way more flexible product but its been a frustrating material to work with.
Thanks for getting in touch. I can offer some initial suggestions here, but for a closer look, I would recommend reaching out to our Support Team and sharing these photos along with the file used for the print.
In order to work around the outer wall tearing as well as resin flowing out of the model, it may be worth trying to print the model solid rather than hollow. As well, if supports on one face of the model are acceptable, printing the model at a 20-30 degree angle from horizontal would be ideal (see Model orientation best practices for SLA printing). This may also allow you to get away with using fewer supports overall.