I made a single end bump tool that works on any angle without adjusting.

Nice Tool @Parlo . Parlo - could you please explain how the steel ball is supported and why it rolls instead of rubbing on the housing?
 
That bearing setup can come in handy and cost isn't that much.
 
Can I ask what size / caliber of lathe that you are using this burnishing tool on? I have used Cogsdill rotary burnishing tools on I.D.’s before to obtain required finish. I would think that the side loading of the cross slide might be an issue in that it may not be robust enough, ( the main reason that I prefer scissor type knurling tools). Brings to mind setting boxtool rollers after the cutting tip rather than before.
 
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