Dremel Tool Post Grinder

I made this tool a while ago. I inherited a small Dremel Moto-tool from my father in law. I had been wanting a tool post grinder for a while. After some thought I got an inspiration.

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The nose of this tool easily screws off and on.

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The thread pitch is about 11 tpi. The profile does not seem to exactly match standard 60˚ threads, but it is close. I decided to take a shot at making an adapter.

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I mounted a piece of stock. Just using regular drill and a small boring bar made hole a little larger than the minor diameter of the plastic nose piece.

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I cobbled together a set up to cut the internal threads.

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I did not have an internal threading tool for my lathe. I made one from a damaged tap I had. Grinding away some teeth to leave only one that would serve as the cutter. It is ugly but it works.

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The internal threading tool was clamped in place in my lantern tool post using steel blocks drilled to match the tap shank.

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I threaded the part slowly. Stopping after I got close until the Dremel screwed into the adapter. It is a nice snug fit. The grinding forces are low, the fit is tight enough there is no need for a clamp on the threads.

I've made several Dremel accessories using 3/4-12 as the thread to fit the nose. It's something of an odd-ball since UNC standard is 3/4-10 and UNF standard is 3/4-16. Dremel probably did that in an attempt to get folks to buy accessories from them. After all, how many people can single point threads in their home shops ? ;-)

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Thanks hemmjo! We've added your Dremel Tool Post Grinder to our Lathe Accessories category,
as well as to your builder page: hemmjo's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-dremel-tool-post-grinder-3"> <img src="/uploads/260552/homemade-dremel-tool-post-grinder-3.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-dremel-tool-post-grinder-3">Dremel Tool Post Grinder</a> <span> by <a href="https://www.homemadetools.net/builder/hemmjo">hemmjo</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/grinder'>grinder</a>, <a href='https://www.homemadetools.net/tag/dremel'>Dremel</a>, <a href='https://www.homemadetools.net/tag/rotary-tool'>rotary tool</a>, <a href='https://www.homemadetools.net/tag/tool-post'>tool post</a> </div> </div> </div> </div>
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