homemade micro borlingbar holder

[Make Everything]

I homemade a micro borling bar holder in the 250-004QCTP tool holder.it can use 5mm micro borling bar.

[Altair]

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:

Micro Boring Bar Holder by Make Everything

tags: holder, boring bar

[Okapi]

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…

[Toolmaker51]

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!