Im trying to hold a .03 dia. hole .07 deep to +/- .0002. Only mill I have is a .025 2 flt with .08 loc. Using a .014 step down interpolating after a .025 drill. 18k rpm feeding at 1 ipm. Cannot get the taper any better than .0005. Any ideas?
Results 1 to 3 of 3
-
10-08-2019, 03:10 AM #1
- Join Date
- Oct 2019
- Posts
- 1
Trouble with tight tolrance small hole
-
10-08-2019, 05:50 AM #2
Community Moderator
- Join Date
- Dec 2013
- Posts
- 5717
Re: Trouble with tight tolrance small hole
Damn, that's a tough one. Maybe spiral down, maybe 0.01/rotation?
Jim Dawson
Sandy, Oregon, USA
-
10-09-2019, 04:41 AM #3
Member
- Join Date
- May 2016
- Posts
- 471
Re: Trouble with tight tolrance small hole
Why in the world are you trying to mill that? Drill with a short drill and ream. Try MA Ford "True Size" reamer. I have had great luck with them.
Dave
Reply With Quote
Similar Threads
-
small stool build using fillets for tight joints
By woodman08 in forum Gorilla CNC MachinesReplies: 0Last Post: 08-21-2016, 09:40 PM -
Trouble tapping a blind hole
By subi4ester in forum Haas MillsReplies: 34Last Post: 10-29-2010, 10:24 PM -
Small Hole Drilling
By frogier in forum MetalWork DiscussionReplies: 2Last Post: 04-28-2010, 08:34 PM -
How small a hole can you plasma in 11 ga?
By Stuff-Builder in forum Waterjet General TopicsReplies: 7Last Post: 01-21-2008, 05:42 AM
Tags for this Thread
Posting Permissions
