• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.
  • Guest,  We want to wish You and Your Family a Healthy, Happy Thanksgiving! Click the "X" at the top right corner to remove this notice)
  • PLEASE: Read the FORUM RULES BEFORE registering!

4

Index-able Boring Bars

3
Like what you see?
Click here to donate to this forum and upgrade your account!
10

Rockytime

Active User
H-M Supporter-Premium Member
Joined
Mar 9, 2011
Messages
186
Likes
102
#1
Just received my order of index-able boring bars today. Five boring bars, 6-12mm with inserts for $29.99 and free shipping. Gave one a quick try in brass. Cuts like butter and hope it does the same with steel. This is the 6mm bar. Probably the max on the Sherline. Others will work on my MaxiMat7. I have several types of boring bars and my least favorite are brazed bars.
 

Attachments

pstemari

H-M Supporter - Premium Member
H-M Supporter-Premium Member
Joined
May 18, 2015
Messages
230
Likes
251
#2
Brazed bars are a nuisance. Maritool makes nice indexable bars in both steel and solid carbide in a variety of sizes.

I wound up making some bushings to adapt them to the qctp holders.

Sent from my Pixel XL using Tapatalk
 

mikey

Active User
H-M Supporter-Premium Member
Joined
Dec 20, 2012
Messages
3,049
Likes
2,966
#3
You can bore with a 1/2" indexable carbide bar at full extension (5" deep) on a Sherline lathe. The lathe is far more capable than many folks think.
 

Buffalo20

Active Member
Active Member
Joined
Nov 1, 2016
Messages
254
Likes
320
#4
I bought a similar (same) set from BangGood, for about $22, about 6 months ago. The boring bars came with 10, CCMT 21.51 inserts. I got a 6 mm, 8 mm, 10 mm and 12 mm boring bar, in the set. I've used them 3-4 times, since I got them, they have worked fine, so far
 

Rockytime

Active User
H-M Supporter-Premium Member
Joined
Mar 9, 2011
Messages
186
Likes
102
#5
You can bore with a 1/2" indexable carbide bar at full extension (5" deep) on a Sherline lathe. The lathe is far more capable than many folks think.
I have confidence that the Sherline can handle it but not with the A2Z QCTP. I have lots of 1.25X1.25 aluminum bar stock to make dedicated holders which are much more rigid.
 

mikey

Active User
H-M Supporter-Premium Member
Joined
Dec 20, 2012
Messages
3,049
Likes
2,966
#6
Agree that a better boring bar holder makes a big difference.
 
[6]
5 [7]