I always reference the fixed jaw. As good as the vices are, the moving jaw can twist slightly if the work you are clamping is not square.
As far as which corner of the jaw you reference to, do what you are most comfortable with, the machine will obey the command set you send it On some parts I have made, I mark the stock corner to corner to find the center. That way I am extracting the finished part out of the center of the raw stock. Since i have been doing that I have changed my work holding strategy away from mostly vice, to tooling plate and edge clamps. I will drill & tap holes that match the holes in the part. drill the holes in the part first, then screw the part to the tooling plate. Remove the edge clamps, and finish the part, edges and all. --J. Ray Mitchell Jr. jrmitche...@gmail.com "No problem can be solved from the same level of consciousness that created it"Albert Einstein On Sun, Jan 13, 2019 at 9:08 AM dave engvall <dengv...@charter.net> wrote: > Not just to be contrary I use the upper left corner of the vise. > However, I do admit the upper right is more logical. For Z my travel so > short I don't worry about reaching the bed. > > > Dave > > On 1/12/19 9:41 AM, Stuart Stevenson wrote: > > Gentlemen, > > I always set up my machines with the home position at the - > > > > X positive limit (or close) > > Y positive limit (or close) > > Z positive limit (or close). > > > > This gives me all negative values in the work piece offset registers. > > > > Z up is the most important to me. If I tell it to go home (G91G28Z0) I > want > > the tool to be as far up as possible. This way the tool should never > plunge > > into the table or work piece. > > > > I have a tendency to use the X positive side of the solid vice jaw as X > > zero also. On occasion I will use the X negative side of the solid vice > jaw > > but not often. This gives me all negative values (or nearly so) in the > > program. This gives almost all negative values for X and Y and make it > (for > > me) easier to read the program. The machine doesn't care which way the > > program looks. > > > > thanks > > Stuart > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
