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An improved Threading Attachment for DB/SLs


caryscotthere
 

Hello All,

For those of you who were with us last Septerber you may recall I
mentioned an article in Machinist's Workshop, Vol. 19 No. 4 for
Aug./Sept. 2006. A Mr. Thleodore M. Clarke described how he made a
short Compact Boring Head for a Uniamt SL. He also described an
ajustable back plate for the 3-Jaw chuck which I found even more
interesting.

Mr. Clarke is back in the just received February/March 2007
Machinist's Workshop, Vol. 20 No.1 in which he describes how de
designed and built a improved Threading Attachment for DB/SLs. It
took me a couple of reads to under stand all that he has done in
this article but I think I finally have a handle on it. He points up
the fact that when using the stock attachment the cutting point of
the threading tool describes an arc as it is advanced into the work.
He works in optics so found this to be unacceptable. Therefore, the
new design in steel with dove tails and a micrometer dial. A very
interesting article.

Best, Cary Stewart