01-19-2013, 09:34 PM
Pictures as promised Ed.
The shaft is 46 inches long 2.357 dia at the ends with an undercut through the middle. As I thought it was too slender to cut in one pass without a follow rest. The middle wasn't critical so I just cut it in sections.
![[Image: IMG_0424.jpg]](https://lh6.googleusercontent.com/-_QR1p2_C4Co/UPtTOk6862I/AAAAAAAAA-o/kJP6ttLdK8s/s1280/IMG_0424.jpg)
The surface came up good but has a visible pattern, can't feel it but its there. The ends were cut at .004 in/rev feed and the middle at .008 in/rev all at 400 rpm .030 cut. Carbide inserts.
![[Image: IMG_0426.jpg]](https://lh6.googleusercontent.com/-9aD3DnuIyCw/UPtTONSesyI/AAAAAAAAA-c/a8rRfcxgqHk/s1280/IMG_0426.jpg)
The manufacturers part and mine. They wanted over $600, I charged $200 and the material was $130. There's has a through hole to stop the shaft rotating, it breaks there, stress riser I guess. Bill lost the bolt that goes through, the last one ran its life without it, so we didn't drill this one.
![[Image: IMG_0427.jpg]](https://lh6.googleusercontent.com/-0odFUQiKV4Y/UPtTOdLRMBI/AAAAAAAAA-g/y9DXjelWRXA/s1280/IMG_0427.jpg)
The shaft is 46 inches long 2.357 dia at the ends with an undercut through the middle. As I thought it was too slender to cut in one pass without a follow rest. The middle wasn't critical so I just cut it in sections.
The surface came up good but has a visible pattern, can't feel it but its there. The ends were cut at .004 in/rev feed and the middle at .008 in/rev all at 400 rpm .030 cut. Carbide inserts.
The manufacturers part and mine. They wanted over $600, I charged $200 and the material was $130. There's has a through hole to stop the shaft rotating, it breaks there, stress riser I guess. Bill lost the bolt that goes through, the last one ran its life without it, so we didn't drill this one.
Free advice is worth exactly what you payed for it.
Greg
Greg