I recently bought one of these for my Kapex and was able to use it last weekend to build out a quick 24"x30" gallery frame for some art my wife purchased. The design is absolutely brilliant and worked perfectly. Install took maybe 2 minutes and I milled up 8 blocks of 8/4 maple into "cubes" using the provided template, installed one and went to work. Cuts were clean, crisp and zero tearout. I already use their zero clearance plate but having the cube against the fence makes for a nice means of knowing where you'll cut anywhere along the fence. Made for sneaking up on the miters a breeze. As an added bonus, I think it improves dust collection slightly as it seems the cube provides a "ramp" that sends debris towards the boot.
If you have a Kapex I highly recommend it.
https://www.colliflower-zci.com/stor...ence-for-kapex