- Joined
- Dec 18, 2019
- Messages
- 7,637
I generally keep a set of Allen wrenches by my lathe - metric. And regular metric wrenches, since my lathes are metric. Whenever I have to use my 3 Aloris tool holders, I have to stop and think - oh yeah, these are imperial, then go get the imperial Allen wrenches. It disturbs the work flow, which can cause a cascade of errors later. The other dozen tool holders are metric. Basically my point is mixing measurement systems causes far more mistakes than you'd imagine, primarily by workflow disruption. Of course, if you have a perfect mind of a perfectly programmed robot, then you won't run into this problem (maybe). I have neither a perfect mind, nor am I a perfectly programmed robot, so I need all the help I can get. Not mixing systems (unless essential) is simply a trick I use to minimize problems. Mixing imperial allens on metric sockets is NOT a good thing, they have a sloppy fit and will wallow out. The proper fitting key is needed for grub screw longevity, especially for low grade steel used in Vevor set screws.