Construction notes on building a long taper attachment for a 7x1x0 lathe. This is based on a short article in th May 30 1957 issue of Model Enginee magazine This is a project in progress and I will try to keep it updated as I go along. |
Tthe sine bar taper jig casting. After several tries I finaly got the gating
correct and got a good casting |
Front and back views of the casting, note the casting on the left had some problems |
Casting was mounted to the mill table using 1/4" square lathe bits as standoffs,
and indicated until it was parallel with the edge of the table |
Since the casting is longer than the table travel on my mill I had to mill half of
the casting at a time. |
Using the same indicating method as in the original setup ,the casting was
moved to the other end of the table to finish milling |
After milling, a couple of passes over a piece of emory cloth on the mill table cleaned
up the milled edge of the casting. |
Next part of the project was to spot face and drill the raised mounting
pads for the end posts of the adapter. |
I will be updating this page as I finish construction. Now that I have the
pattern made,if any one is interested in purchasing a casting please contact
me at mailto:duwayne@duwaynesplace.com |
A copy of the original article is available at http://groups.yahoo.com/group/mlprojects/files/Projects/LongTaper.pdf |
A hole was drilled in the fixed end of the casting and it was mounted to a baord
fastened to the mill table. This will serve as a pivot for milling the slot.
First a series of holes are drilled in the casting to remove much of
the material in the slot. |
A piece of barstock was clamped to casting and used as a long handle to help milling
out the slot with an endmill. Next the slide assembly. |
