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ContactCement

diamond hole chisel set screw in punches

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Overpriced for the quality.  Craftool 3009-00  I did not pay full retail I bought mine new at an auction. The one tool does all concept is nice or appealing somewhat and is probably for the casual leather crafter. Just by looking at the quality I cannot say how well the removable punch tips will hold up as I have my doubts about the design. This removable punch set should give me the same stitch spacing as the more expensive set. The punched holes were easily made (no brute force) using a light weight skinny craftsman mallet. The punched holes looked pretty good and the punches pulled free from the leather easily. I cannot comment on any final hand sewn results yet. I'm still waiting for some inexpensive 1mm and 1.2mm waxed thread to arrive from another country. When I find the stitch spacing, appearance, number to teeth I like or use most using the screw in punches I will later on purchase the more durable individual diamond chisels. The more durable black coated solid single stitching chisels listed appear to be described as  having the same tooth / prong specifications and spacing. It should be an easy upgrade if I like the end results.

NOW FOR THE BAD

The handle and punch tips both have threads. The handle and punch tips both have machined flat areas or shoulders that should be in contact with one another when fully tightened. If they don't make full contact vibration from use may cause damage to the male and female threads over time.
Several of my punch tips did not fully tighten and make full contact and had a 1/16" gap.
I had to use a rotary tool to remove excessive coating from the threads of a few punch tips.
Oiling the threads in my opinion was not even an option as it would get onto the leather and ruin it.
After gently securing the punch tips in a wooden clamp, I screwed and unscrewed the punch tips 7 - 8 times each until all of the punch tips eventually made full contact.
I will buy solid punches from now on when I find my favorite stitches per inch needed for projects.                                                                                                                                                                                                                                                    

Edited by ContactCement

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I found that I tired quickly of having to change to the 2 prong to go around corners, then back to the larger part. I was doing a project with a lot of corners. Ugh. 

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