"Tim Wescott" wrote in message
...

In order for the circuit board to fit, it must be tilted at about 40
degrees, the connectors that go through the above-mentioned holes
are
inserted, pushed home as far as they'll go, then the whole shebang
is
rotated into place.

In order for this to work, the top edges of the 1/2" holes need to
be cut
at about a 40 degree angle. The end effect is that on the outside
of the
case the holes are round, but on the inside they are oval.

Assuming that the above discussion makes sense, how would one call
this
out on a drawing? Just draw the hole outlines, and leave it to the
machinist to figure out how to make it all work?


You could add a cross-section drawing, open up the hole and use a thin
washer, or "see sample for detail".

The chassis casting drawing for a [mumble] is like the latter and I
had quite a hard time reconstructing the geometry of the battery
mounting bosses.