On the other hand, if you make one, you will always be finding that you need another holder because you either don't have it or you have it but it already has a cutter mounted. So you will have to shut down the current project in order to make it or dismount the existing cutter in order to mount the different cutter. Which sorta defeats the purpose of the Quick Change. The AXA or BXA tool posts are not exactly cheap but once you figured out which size you needed and bought it, additional tool holders are mostly pretty cheap.