Hi folks, curious for your thoughts on something. I am making my first few runs of pennywhistles on the Form 3 before looking at other mass production, and I’m wondering if I can a) optimize the supports manually for critical surfaces, and b) use manual supports to make the whole thing easier to descaffold. Currently there is no way to tell Preform NOT to put a support on a given surface (where they’re attached to your model rather than the scaffolding), and this has led to some very dicey support placement around the airblade. I’m thinking of modeling in my own supports for these final models.
Mere thousandths of an inch will kill these instruments, so it’s really important that the highlighted areas come out as close to perfect as possible. In this case I have deliberately outset the windway exit somewhat so I can polish it back flat to get a guaranteed 90deg angle on the windway exit, but again that is suboptimal from a labor perspective.
I’ve highlighted these areas below:
My printing orientation with the best results is nose-up (so pointing down into the tank when viewed in action) on maybe a 10deg angle from vertical, with the windway exit overhanging the blade (which seemed to be the only way to keep Preform from attaching supports to the end of the blade).
Any ideas about what a custom support approach would be?