A few years ago I purchased a Quick Change Tool Post (QCTP) and several QCTP Tool Holders designed for use on Sherline and Unimat types of lathes (these are small lathes with approximately 3” swings). This year I decided to make more of the tool holders with the QCTP 60 degree slip-on dovetail design.
Pictured are a few of the ones I built. Shown is a tool holder for ¼” dia. solid carbide boring bars and grooving tools from Micro 100. This tool holder can also hold a sliding center punch used for layout work when using the indexing plate on the lathe headstock (see the HMT postings for adapting indexing plates to the Unimat). Another photo shows another tool holder for ½” dia. Cobalt HSS boring bars equipped with small diameter cutting edges.
All the tool holders are fabricated from 6061-T6 aluminum bar stock, height adjustment cap screws are 10-32, and 8-32 cap head screws for boring bar clamping screws. Also shown is a single 6-32 screw used to register the flat spot on the Micro 100 boring and grooving bars.
More photos and information about the Unimat modifications can be seen at http://www.homemadetools.net/lathe-modifications .
Last edited by Paul Jones; 03-21-2016 at 09:55 AM.
Great question. The part with the hole is in the lathe chuck and being center punched to mark three holes spaced at 120 degrees. Not shown in the photo is the index plate attached to the spindle and used as the divisor. Please see my photos for adapting the Taig index plates to a Unimat lathe and milling head (Homemade Indexing Plate for Unimat SL Lathe).
By the way the brass part is part of a replacement part for holding apples in an old fashion hand cranked apple peeler and slicer. My wife asked me to fix it. I made the new part from stainless steel and brass, much better than the original part. My wife makes wonderful apple pies and apple crisp using the apple corer/slicer to quickly prepare the apples.
Last edited by Paul Jones; 02-29-2016 at 09:48 AM.
Paul thanks for update, congratulations on the job, I really enjoyed his adaptation.
Can I see you feeling proud by finishing his work and be able to use. (I hope you understand me).
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Paul Jones (11-10-2014)
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