I designed and printed out this frob knob bracket (part of my series of things to make prototyping systems easier). As you can see it is really really long, and that makes it prone to warping/lifting etc. It occurred to me that I wanted the exact opposite of “supports”, I wanted “tie downs”. So remembering that my standoffs stuck well to the platform I added some to the ends of this bracket. One is 4mm x 12mm x 1mm and the other is 12 x 12 x 1 mm. They connect to the main structure by a piece that 0.5mm thick and 0.5mm wide. You can seem them on the platform in the photo and I took a picture of what it looked like in my CAD tool as well. These tie down pads break off easily (PET+ is a bit annoying for that as its really tough, but they did come off, I will try 0.25mm on my next iteration.
The good news is that my bracket stayed completely flat while it printed, didn’t lift at all without any addition sticking agents (printed right to Kapton tape, 100 degree C bed) The idea is that this these translate the lifting force of the shrinking plastic (as it cools) into a lateral force trying to pull the tie down pad across the build plate. As long as it doesn’t break free, the piece cannot lift up.
Anyway, I’m quite pleased with it. I’m going to experiment with my bracket that I was trying to print in ABS and see if I can make it flat with this technique as well.
I’ve got side containment on the Rep 1-dual but no top containment. And