One of the wedges cracked - the other 3 I printed are still OK.
I put this down to a “manufacturing defect”, by which I mean that when the 3D printer hit the pause layer, I didn’t get the captive nuts into the print within a reasonable time (it was many minutes later), so that under stress it delaminated at this layer.
you can rotate them 30 degrees so that there is a flat top and bottom and have
the lower half fully supported, with the upper part having a slight gap. not a
perfect fit, but it should be good enough.
in an ideal world, we could drop in nylock nuts so nothing can vibrate out.
I tweaked them to take square nuts as a press fit post printing and set the
printer to print them sideways. I’ll see the results in the next day or two.
first of all, many thanks for providing the spare parts file.
I’ve made a small modification to it for my own use, as I find the step involving the pause during printing too complicated and also too destabilising.
I thought the part needed to be printed flat, with as many walls as possible, to maximise its stability against the forces acting on it.
As I still had some M3 melt-in nuts lying about, I used those.
At the moment, the stability looks very good and I hope it stays that way.
Printed in PETG with 100% infill.
As I’m still fairly new to CNC milling, I adapted the print file from m8dn’s template in Tinkercad.
So it’s probably not perfect in terms of the print flow on the individual layers.
