boring

This post is about making some very rigid holders for indexable inserts for use with Criterion style boring heads. This is a Criterion boring head with a typical set of low cost sweated carbide boring bars. A genuine Criterion like this comes in at around US $5/600 for a 2" version, but...

Good afternoon everyone! I hope you are all having a great Saturday so far! I was digging through the tools that I received with my lathe and found this. I first was thinking a boring device of some type but I think this is for a mill.....I would love for someone else to chime in and educate me...

I am in process of making a part & could use some pointers.. (Lathe is an Atlas QC54. Am using HSS tooling) The part is a ring, 2.25 OD x .75 ID x 1.00" long/thick. On one side is a recess, or counterbore, of 1.625 dia x .875" deep. What would be your choice of HSS cutting tool and process to...

Hi all, just joined the forums, and I had a question for other Criterion boring head owners out there. I just picked up a Criterion DBL-203 3" boring head on eBay. It appeared to be in excellent condition, so I went for it, and when I put it in my mill, it looked a little off to me. So I got...

I have a few blades I want to enlarge the center hole, they are 3-1/2 to 5" steel blades 3/32" thick . I have a few ideas on how to go about it . Can anyone that has done it with relative success give any thought on doing this ? I know if the enlarged hole is not dead center then I...

I'm looking for a decent face mill 2" and 3"+ . Need the R8 shanks and holders too, or integrated. Not many of them have good reviews from Shars, BHS, Grizzly. I'm Looking for budget stuff that's semi decent, I dont want to wreck a high end tool while learning but I don't want to waste money on...

Ooops, a brand new left hand boring bar arrived in the mail today. Don't worry, it wasn't broken. The first thing I did was to part it off in the lathe. And here's why. Now I can bore some really big holes using the cross hole in the boring head. I tried to do this with the...

Guys I have one last boring operation to perform on an aluminum tube for my Crayford style focuser. Photo of my 99% finished Crayford focuser (minus anodizing) is below and the tube in question is at the top. It is about 4" long and has a rough ID of 2". My lathe is Grizzly G4000 and the...