The customer reported that adding G64P0 at the front of the program did not
fix the problem.
I was not in attendance so I cannot verify the command was correctly
applied.

I will get the ARC_BLEND_ENABLE = 0 in the ini file and report back.

thanks
Stuart


On Wed, Mar 29, 2017 at 10:22 AM, sam sokolik <sa...@empirescreen.com>
wrote:

> The cheap and dirty way would be to add
> add in the TRAJ sectio/n
>
> ARC_BLEND_ENABLE = 0
>
> /This puts the trajectoy planner into pre 2.7 mode (pre circular arc
> blend - 1 segment look ahead)
>
> You obviously lose x segment look ahead.  During testing exact stop mode
> happened between G0 and contouring moves - but that changed the behavior
> of linuxcnc so I think it was taken out. (now it blends between all
> segments types.)
>
> Currently the fix is adding G64Px.xxx at the beginning of all programs.
>
> sam
>
> //
> On 3/29/2017 9:37 AM, Stuart Stevenson wrote:
> > Gentlemen,
> >    This is connected to the G64 question I asked on the developers list
> > yesterday.
> >
> > G64 P0 does not change the positioning problem on the machine.
> >
> > Problem description:
> >        desired machine motion
> >           position XY with Z above the material/work level
> >           move Z to material/work level
> >           face mill top of material
> >
> >         encountered machine motion
> >           position XY with Z above the material/work level
> >             result as expected
> >           move Z to material/work level
> >             result not as expected - as the tool approaches the final Z
> > position
> >                                                    the tool moves an
> amount
> > toward the final XY position
> >                                                    and cuts into the
> > material/stock
> >            face mill top of material
> >              result as expected
> >
> > The work around has been to add an intermediate point after the z move
> that
> > will cause the rounding to fall short of the material/stock
> > The BIG problem is the customer has many proven/certified programs making
> > parts on this machine. The quality manual requires a full first article
> > inspection procedure to be performed on the resultant machined part after
> > ANY change in the process. This is not acceptable to the customer.
> > Customer wants the machine to just perform like it did with the previous
> > (old) linuxcnc version.
> > Customer is asking for revision to old version if fix is not able to be
> > accomplished rather quickly.
> >
> > thanks
> > Stuart
> >
>
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