- Joined
- Dec 3, 2013
- Messages
- 1,844
Hi All,
I had originally ordered the PM-1440GT with a DRO from PM that I will install myself. It is the glass scale version he sells. My only experience with DRO glass scales is the SINO DRO/scales PM put on the PM1127 we got for the high school. Both scales failed within the first two years of limited use so I'm a bit gun shy of them. It could just be the SINO brand or a bad batch since there are so many out there.
My old lathe had a Shooting Star CBX DRO that used a rack and pinion scale. Good for 0.0005" and worked really well for a long time but the scale read heads are large and the rack gear covers are crude at best. I usually do my high precision work with indicators so the standard resolution did not matter.
I'm now re-thinking the glass scales and going to the newer magnetic scales with higher resolution.
I use my lathe a lot and the scales will be subject to cutting oil, coolant, solvent etc. I would love to hear some thoughts on either. I won't be able to order until the new lathe arrives but I will need to make a decision before it is shipped (hoping next month).
Jay
I had originally ordered the PM-1440GT with a DRO from PM that I will install myself. It is the glass scale version he sells. My only experience with DRO glass scales is the SINO DRO/scales PM put on the PM1127 we got for the high school. Both scales failed within the first two years of limited use so I'm a bit gun shy of them. It could just be the SINO brand or a bad batch since there are so many out there.
My old lathe had a Shooting Star CBX DRO that used a rack and pinion scale. Good for 0.0005" and worked really well for a long time but the scale read heads are large and the rack gear covers are crude at best. I usually do my high precision work with indicators so the standard resolution did not matter.
I'm now re-thinking the glass scales and going to the newer magnetic scales with higher resolution.
I use my lathe a lot and the scales will be subject to cutting oil, coolant, solvent etc. I would love to hear some thoughts on either. I won't be able to order until the new lathe arrives but I will need to make a decision before it is shipped (hoping next month).
Jay