- Joined
- Jun 29, 2016
- Messages
- 11
Hello all,
I have 180x300 (7"x12") optimum brand chinese made lathe,
I was living hard moments while making heavy cuts and getting surface finish problem issues,
Especially when using cut-off tool the carriage assembly is bending sometimes, although top slide and saddle locked position,
So i knew that ways should be modified/tuned and since it's my first precision work i started from cross slide,
As you see from the photo, red circle marked positions was only contact area to surface plate. Actually i was waiting bad ways but not so this bad at all This surface was polished by the way but under what i thought, belt sander maybe?
Anyway, i started to hand scraping, tool is basically carbide bit brazed flat screwdriver, i used dremel sanding paper discs for roughing also. I did some deep scratches but generally result is better then i've expected.
Darker area is transferred blue from surface plate. How does it looked to experienced eyes, should i go on for few passes?
Low spots are under 0.01 mm (0.0005") from high spots (0.007mm avg)
I am working on carriage side right now using cross slide as master. It was bad either and got some good results so far.
Gib is also inspected and it is bended as you guess. I read about making gibs, few people advising to make from derlin, is it suitable?
Thanks
I have 180x300 (7"x12") optimum brand chinese made lathe,
I was living hard moments while making heavy cuts and getting surface finish problem issues,
Especially when using cut-off tool the carriage assembly is bending sometimes, although top slide and saddle locked position,
So i knew that ways should be modified/tuned and since it's my first precision work i started from cross slide,
As you see from the photo, red circle marked positions was only contact area to surface plate. Actually i was waiting bad ways but not so this bad at all This surface was polished by the way but under what i thought, belt sander maybe?
Anyway, i started to hand scraping, tool is basically carbide bit brazed flat screwdriver, i used dremel sanding paper discs for roughing also. I did some deep scratches but generally result is better then i've expected.
Darker area is transferred blue from surface plate. How does it looked to experienced eyes, should i go on for few passes?
Low spots are under 0.01 mm (0.0005") from high spots (0.007mm avg)
I am working on carriage side right now using cross slide as master. It was bad either and got some good results so far.
Gib is also inspected and it is bended as you guess. I read about making gibs, few people advising to make from derlin, is it suitable?
Thanks