On Wed, 11 Jun 2008 05:44:06 -0700 (PDT), jon_banquer < XXXX@XXXXX.COM >
Starting with Chapter 6 the focus should move to programming this real world
part out of a chunk of say T6-6061 aluminum. That means the first thing we need
to do is create a bounding box that has extra material and set up a WCS at the
upper left or right corner of the bounding box. This would be on the solid jaw
of the vise. I feel that this is the best place to properly describe what the
WCS is all about and how to use it. Make sure that at a later point when the
front of the Servo Housing is going to be machined that using the Relative
Button in the WCS View Manager is explained and used in the example. This is
also the best place to talk about the fact that the WCS arrows must align to how
the part is going to sit on the machine / vise. This is never made clear in any
documentation I have read! Neither is a good explanation of what the Relative
button is for! How about we start machining this part using a Facing Toolpath
because if I were programming and making this part I would face the stock first.
Last I knew most such parts are usually dimensioned from the datums
which are usually the lower left of the plan view of the part *as shown*.
Perhaps you have your vise on backwards or are using a horizontal <VBG>.
Or the stock is already of proper thickness or you are going to machine
the entire top surface off later anyway ....
Q: Why does the little moron save burned-out light bulbs?
A: So he can use them in his darkroom.