Hexagonal collet block for Stark 4S collets. I wanted a collet block but wasn't willing to purchase a whole set of either 5C or ER collets to get one. I had the beat up hex stock and it was the perfect size for the job. The nut was a challenge. The threads on my 4S collets are in varying states of wear, the smallest o.d. was .894" and the largest .898". Some research led me to a minor diameter of .848" and an initial feed on the compound (30deg) of .037". I kept taking light cuts until the most worn collet screwed in and then took a little more so the least worn collet was a hair away from being snug. Total feed on the compound ended up being .050".
*sorry, pics removed so I don't get banned from Imgur.*
*sorry, pics removed so I don't get banned from Imgur.*
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