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Thanks Judd, this is a good point, we did not talk about the indexing marks on the camlock pins! For anyone reading this, it's very important when setting up new tooling and buying new chucks to follow the installation instructions given by the machine and tooling manufacturer. This lathe uses a 'tick' mark on the spindle nose that indicates the camlock is completely unlocked (you align the two lines) and then it has two 'V' marks at 90-deg. and 180-deg. away from the fully unlocked position. On this machine (Harrison M300) you must adjust the length of the camlock pins if they are replaced or when setting up new workholding such that when fully tightened the tick mark on the camlock pin (the rotating part) falls between the two V marks on the spindle nose. In our shop all of the workholding is already adjusted so that this is the case, but it is important to verify that the workholding retention mechanisms are working properly, and are correctly adjusted. Thanks again to Judd for pointing this out.

@@hmcmachineshop also you should have a match mark on the spindle nose and the collet chuck so that it goes on with the same orientation every time. This should have been selected at first installation as the orientation with the lowest runout, then marked.

​ @Elec Tech you're exactly right! We haven't done that in the past, and the tooling we have available may move around to any one of our six Harrison lathes. We'll bring this up at our next management meeting. Thanks for the suggestion!