Found a nice carbide shank boring bar...

[ridgeway]

I picked up this Grizzly boring bar. Min bore is .236. Will work great for boring muzzle brakes, pre boring chambers, boring a seater stem hole, etc. Figure this might be use for others that are looking for a small minimum bore boring bar that that has enough length to make it very useful! Every mini boring bar I find with a small min bore will only bore 2" deep or so. This one has some length to it!

Overall the bar is very nice quality. About the only inserts I can find for it are made by Mitsubishi and are only sold in packs of 10.

http://www.carbidedepot.com/detail.aspx?ID=298890

 

[jkohler]

Should be a nice Little bar for thoses jobs. I have a few of the winda circle series f carbide bars that I use for the same jobs.

 

[John11-87]

Nice little bar, if necessary Chuck, you could relieve the back side of the tip of the bar, and maybe get down far enough to do a .204. We end up doing that on smaller bars quite often at work, it helps get the coolant in and chips out as well.

John

 

[ridgeway]

Nice little bar, if necessary Chuck, you could relieve the back side of the tip of the bar, and maybe get down far enough to do a .204. We end up doing that on smaller bars quite often at work, it helps get the coolant in and chips out as well.

John

Thanks for the tip, John. I actually had to do that on several occasions on some steel boring bars i have when they wouldn't fit, lol

 

[jonbearman]

I use circle bars made of solid carbide and they take a similar insert.You can cut a perfect crown with them.

 

[ridgeway]

I used it for the first time today and it works extremely well and versatile. I used it to cut a 25 degree cone and prebore a chamber. The finish it made was wonderful. Will use it to bore my brake and tuner brake next...pricey, but well worth it.