QCTP Stud Upgrade
One of the things about my lathe that has always made me feel a little iffy was the QCTP stud. From the factory, it was a very anemic M8, that I’ve broken several times over the years. While taking some heavy cuts during a recent project, it looked almost as if the tool was tipping down because the stud was stretching under the load. I’ve learned from past experiences that I usually have another project or two before the stud gives up the ghost. This time around I decided to upgrade the stud to something with more longevity, instead of turning a replica of the inferior original.
I Originally considered an M14 stud, as the QCTP body had a big enough bore to support it. However after thoroughly examining the top of the compound, I decided M12 would be a good compromise between stud strength, and maintaining the structural integrity of the boss on the top of the compound. The stud is made from 1144 Stressproof, a material I’ve really come to enjoy working with. The accompanying Flange nut is made from annealed cold rolled 4140.
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Nice job.
Where did you get the hex nut collet holder you used in your vice?
Where did you get the hex nut collet holder you used in your vice? I’m also interested…
Hi Robert,
I got my collet block set from Shars.
https://www.shars.com/5c-collet-block-set
You have to buy the pin spanner separately this is the one i have.
https://www.amazon.com/gp/product/B00004WBI4
Hi Dan,
Great video and excellent machine work. I know this is an older video, but can you tell me what QCTP you purchased and where you got it? I have a similar compound on a Jet 1430 and am having trouble finding a post that will fit.
Thanks,
Jeff
Hi Jeff,
I’m sorry it took so long to get back to you, I was out of town on vacation.
I got my QCTP from a company called Lathemaster. The company is out of business now, but they sold a higher end version of my HF 8×14, as well as a bunch of addons for it and similar machines.