I homemade a micro borling bar holder in the 250-004QCTP tool holder.it can use 5mm micro borling bar.
Attachment 30424
Attachment 30425
https://www.youtube.com/watch?v=syWQNVGXINU&t=3s
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I homemade a micro borling bar holder in the 250-004QCTP tool holder.it can use 5mm micro borling bar.
Attachment 30424
Attachment 30425
https://www.youtube.com/watch?v=syWQNVGXINU&t=3s
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Thanks Make Everything! We've added your Micro Boring Bar Holder to our Lathe Accessories category,
as well as to your builder page: Make Everything's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-micro-boring-bar-holder"> <img src="/uploads/225180/homemade-micro-boring-bar-holder.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-micro-boring-bar-holder">Micro Boring Bar Holder</a> <span> by <a href="https://www.homemadetools.net/builder/Make+Everything">Make Everything</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/holder'>holder</a>, <a href='https://www.homemadetools.net/tag/boring-bar'>boring bar</a> </div> </div> </div> </div>
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A good idea, if you make it with a square base, it can be use in all normal tool holders with a square place like Tripan or Promat etc…
A bar holder is more than just handy with small cutters. Just last week I was forced into finagling (aka shimming) a small bar in a exceedingly large QCTH, of 16" lathe, not just boring 1.000+.0005/-.0000 "Ø, but along with an O-ring groove.
For the lack of such a holder/ bushing at least 2 hours lost.
While I'm on about it, making holder or bushing off-center adds 2 useful features. This is aid to centerline adjustment, also with surface grinder and spin jig, you can make bars out of broken HSS endmills, taps etc. That puts clearance on the cutting side, instead of concentric. If you incline spin jig......tapered bars on demand!