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.
So, I’ve tidied up the design of my clamp wedge a bit and you’ll be able to find the STP file in the Router Be Gone thread.
The new one looks like this, and is a little easier to fit into place
