I dig the QCW but always hated the bundled Oops Clamps, after one lost bit that sent shards of metal all over the place, I bit the bullet and dog-holed my wasteboard:
X Axis - eleven 22mm holes
Y Axis - eight 22 mm holes (evenly spaced and configured to avoid the mounting holes
Hole depth 14 mm
22 mm (external diameter) copper pipe from Lowes, cut to 31mm lengths and 3/4" ply for clamping blocks
Ten times better hold performance than the clamps which have been known for a while as FUp Clamps in my workshop.
If you are inspired to do the same - modelling time 15 minutes in Fusion 360 - cutting time 18 minutes. FUp Clamps in the back of the cupboard…