Just starting out, I have a sine plate with one end as a hinge. It has a small locking bracket but it could not take any pressure, Is the upper angle part supposed to go in the vise to hold it securley.
sine plate
May 15, 2005
3 Replies
Generally you put a stack of spacer blocks under the upper round bar to set the angle. Spacer blocks are lower-precision gauge blocks, often with a threaded hole so they can be stacked up on a setscrew.
Jon
From what I have seen, sine plates and bars are mainly used in low force applications such as layout and grinding.
It is possible to align the part to a given angle, bolt this onto a right angle iron, and then transfer the right angle iron with part onto a mill table.
In home shop / educational setting, I have had the best luck using a magnetic sine bar and test indicator to get the correct angle in a regular milling vise. You can do compound angles with a little math by angling the part in the mill vise and then rotating the vise. PITA.
GmcD
GmcD
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