BLOKKZ Universal Clamping Blocks

I purchased these at a Rockler store, so I am not a verified purchase. I am making cedar window boxes with a 10 degree miter and a 45 degree bevel. (sorry, I hope I used the correct terms). This was the only system I found to help me get the joints glued and pinned. Worked like a charm!

The blocks can not be held to a 90 degree corner with a single clamp without slipping. You've got your hands full just holding your glue joint flush without the chinese fire drill that results when adding the 2 pads, 2 blocks and a clamp to the awkward scenario that is your first corner of the picture frame. Get the picture?If your frame or casing profile will allow you to clamp each block to a leg of the frame (i.e., use 3 clamps on each glue joint) then these will work.Don't waste your good money!