Frank Fusco
Member
- Messages
- 12,791
- Location
- Mountain Home, Arkansas
I have two chucks, both from PSI. One is the big Barracuda 4, the other is the GMC3 Mini.
I have had the Mini for a long time and it served me well with my old lathe, the Grizzly G1067Z. It ran true and smooth.
Then I bought my new, fancy-dancy, Grizzly G0632 EVS lathe. On the new lathe, the big ‘cudda 4 runs just fine, true and smooth. But, the Mini is wobbly awful. Problem may be that it seats thread to thread.
I went to a friends shop, an accomplished turner, and let him try it on his Powermatic. On that it seats on the shoulders of chuck and spindle and runs true.
However, he showed me that his own chucks (which are Rolex class expensive) do not run true on his Oneway (yes, he has both). So, to correct that, he made wood washers for the chucks to seat against. Using those, his chucks run true on the Oneway also.
So, I come home and made a washer out of Osage Orange. Tried the Mini and still was in the Wonderful World of Wobble. Not sure what the problem is. I’m quite certain I made the ends flat and as parallel with each other as possible. I’ll try some more flattening today on the belt sander. But, would appreciate any input on this.
I have had the Mini for a long time and it served me well with my old lathe, the Grizzly G1067Z. It ran true and smooth.
Then I bought my new, fancy-dancy, Grizzly G0632 EVS lathe. On the new lathe, the big ‘cudda 4 runs just fine, true and smooth. But, the Mini is wobbly awful. Problem may be that it seats thread to thread.
I went to a friends shop, an accomplished turner, and let him try it on his Powermatic. On that it seats on the shoulders of chuck and spindle and runs true.
However, he showed me that his own chucks (which are Rolex class expensive) do not run true on his Oneway (yes, he has both). So, to correct that, he made wood washers for the chucks to seat against. Using those, his chucks run true on the Oneway also.
So, I come home and made a washer out of Osage Orange. Tried the Mini and still was in the Wonderful World of Wobble. Not sure what the problem is. I’m quite certain I made the ends flat and as parallel with each other as possible. I’ll try some more flattening today on the belt sander. But, would appreciate any input on this.