Wolfcraft 4650 brackets

Modified brackets for Wolfcraft 4650 doweling jig.

I did not like fiddely setting depth on original brackets, so I made set with fixed position for 18mm wood thickness.
I also added slot for clamps (Wisent in my case), so clamps can stay in place for faster operation.

I've printer them from PLA with 100% infill, not sure if it is neccessary, but they are solid as brick.