Guys,
I would be interested to see what tool shapes and geometries you use for your crowning tools.
I recently came across these micro boring tools on eBay and they work very well.
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I do not use inserts for crowning. I grind a positive rake tool out of 883 cemented carbide on my tool grinder.
The easiest way to check for any minute burrs is with a Q-Tip.
I have a small carbide boring bar that uses micro inserts made by Circle. These inserts are CDCD . I set my feed at the slowest feed speed, and I run my chuck around 1500rpm. Slow feed, and fast speed cuts a perfect crown every time.
when I first started machining my own barrels, crowns used to give me fits. I tried everything, trying to get that perfect sharp crown. the boring bar I now use I found on ebay for 5 bucks. Id be lost without this tool. My PTG reamer holder, and my 5$ boring are my two favorite tools in my shop!!
Until I found that micro boring bar which is carbide I was just using my own ground HSS bits. Im curious as to why your using 833 Jackie, is it because it was available or do you feel it adds something in some way that HSS HssCo doesn't?
The only thing is that they don't make them any more.