Time for a new Warpinverter build

Author	Message
rogerdw Guru Joined: 22/10/2019 Location: Australia Posts: 955	Posted: 11:48am 13 Mar 2021         Revlac said   A 3D printed spacer should work ok, depending on the type of materiel used and expected heat, I have printed in ABS with .8mm nozzle in draft mode, was fast and surprisingly neat and tidy on all the flat parts, overhangs and retractions where hopeless, could be fixed but was unnecessary for the job. I had thought the first and second layers of wire could be backed in to the print a little before the next winding, there would no movement or vibration at all, how well it will work or last is a bit unknown. It depends on what you read on the web about transformers and cooling, The toroid all wound up has very little hole left in the center if any at all, Its more of a big solid hot lump, I have seen smaller ones bonded to a large heatsink, I really don,t think any of us are going to cook them, we would check it to see if we need any extra cooling, fans or oil cooling system quite common. Thanks Aaron, the 3-D printing expert I spoke to this morning was very helpful and pointed out that my PLA filament melts at 50-60 degrees C and PETG at 80 degrees Polycarbonate will start to soften at 113 degrees. Then he asked specific details of the shape and suggested that at 230 OD by 5mm thick  ...  there's every chance the print will warp and come unstuck from the table. I didn't get the impression he was trying to talk me out of it  ...  just genuinely explaining the issues I might face. Seeing there's a lot riding on it, I reckon I'll just use plywood like Klaus did. Hate to have to wind a second one coz it stuffed up.