The Ford Barn - View Single Post - Specific questions re using a boring bar (Old school)

flatheadmurre · 12-10-2019, 05:58 PM

First the cutting bit is usually one rough and one fine cut version with different grinding on the older bars.
If you get the geometry of the bit wrong you get shatter.

You can take the roughcuts as tough as the bar handles without protesting...i woudn´t try a to heavy cut since you´re not in a hurry.

Then you go down to a real light finish cut for acuracy in the end.

No minimum cut, i wouldn´t go more then 20 in a single pass...and since you´re not in a great hurry...a few more passes and acuracy for less honing is better...

12-10-2019, 05:58 PM	#5
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: Specific questions re using a boring bar (Old school) First the cutting bit is usually one rough and one fine cut version with different grinding on the older bars. If you get the geometry of the bit wrong you get shatter. You can take the roughcuts as tough as the bar handles without protesting...i woudn´t try a to heavy cut since you´re not in a hurry. Then you go down to a real light finish cut for acuracy in the end. No minimum cut, i wouldn´t go more then 20 in a single pass...and since you´re not in a great hurry...a few more passes and acuracy for less honing is better...