Closed StellaTerra closed 11 months ago
jfedor2
commented
11 months ago The instructions don't call for heat inserts, there is no typo. Just drive the screw into the plastic. If the hole was 3mm, it wouldn't really hold a 3mm wide screw, would it?
JarTheHead
commented
11 months ago The instructions don't yet call for heat-set inserts, but following this video, I thought they would be appropriate: https://youtu.be/mK5Ez4Nguuw?si=9YgIthzJSPQkv2V7&t=352
The video you shared appears to be using an SGF Bridget case, a fork of the Flatbox that uses M2 Heatset inserts
StellaTerra
commented
11 months ago Yes, my bad. Thank you for the clarification.
The model for the case top has 2.8mm diameter openings for the screws.
The instructions call for M3 screws, which have a diameter of 3.0mm. The instructions don't yet call for heat-set inserts, but following this video, I thought they would be appropriate: https://youtu.be/mK5Ez4Nguuw?si=9YgIthzJSPQkv2V7&t=352
When the inserts arrived, and I tried to heat-set them into the case top, and it mangled the print pretty bad. Looking back at the video, it looks like there is a wider area within the hole, and then a narrower area below, which is not present in the STL. In doing some research, it looks like they start at 3.5mm outer diameter and get bigger from there. I don't think these will ever fit well in a 2.8mm hole, no matter how well printed. After a while I put a screw into one of the inserts and jammed it in with a soldering iron, but I don't think the holes are going to line up well with the bottom anymore.
Can I get some clarification on the instructions, are you expecting the use of heat-set inserts? Is the M3 a typo, and we're supposed to be using M2 screws? Do you recommend drilling out the screw holes so that the inserts fit better? Is there a possibility the STL was supposed to have printed threading that is missing?