On Tuesday 07 April 2020 14:09:43 Ken Strauss wrote:

> > -----Original Message-----
> > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > Sent: Tuesday, April 07, 2020 1:45 PM
> > To: emc-developers@lists.sourceforge.net
> > Subject: Re: [Emc-developers] Toolchange and tlo behaviour
> >
> > On Tuesday 07 April 2020 12:26:23 andy pugh wrote:
> > > On Tue, 7 Apr 2020 at 17:17, Gene Heskett <ghesk...@shentel.net> 
wrote:
> > > > In any event I'm opposed t0 the automatic reload of the last
> > > > tool. I home to a safe position, and I sure don't want the last
> > > > tool used loaded leading to a crash and broken tool when I fire
> > > > up linuxcnc the next day.
> > >
> > > So you remove the tool, but don't tell LinuxCNC?
> >
> > Said that way Andy, yes. I do not shut down with a holder on the
> > post, nor do I home the next morning with a tool on the post. The
> > tool table is enough of a puzzle by itself, so much so that I wish
> > it could be named according to the job right in the gcode, a single
> > table is a not something that suits every job. We may need only 5 or
> > 6 tools to finish that part of the job, so a named tool table with
> > 10 entry's seems like a better solution to me.  And it removes
> > forever the size limit of the existing setup. No reason at all that
> > one couldn't have a named tool table per job. Asking to have a tool
> > that matches the description loaded next. If it has to be measured
> > because its mounted in an R8 or an ERNN, or has been to the grinder
> > for sharpening, a jig to hold it and take measurements which I've
> > cobbled up quite a few times out of dbl-sided pcb materiel is not
> > out of the question if in the end it just works.
> >
> > Cheers, Gene Heskett
>
> Perhaps I have been spoiled by Tormach's expansion to the tool table
> to 999 entries in PathPilot but I definitely don't think that numerous
> (named?) small tool tables is the right answer. Assuming that you use
> premeasured tools (I have about 50 ready to go)

Whereas I'd have to buy 40 more per machine,times 4 machines. Can I open 
up a gofundme? :)

> requiring multiple 
> tool tables will create far more problems than it solves. For just two
> new problems: 1) Assume that I break, replace and remeasure tool #1.
> How do I ensure that the newly measured length is updated in all tool
> tables?
> 2) Assume that I have two tool tables and one contains tools #1, #2,
> #3 and another contains tools #1, #4, #5. How do I conveniently
> combine these into a table with tools #1, #2, #5?
>
To solve that, have a master list and a script that reads each entry from 
the master list. That way you'd remeasure only that entry in the master 
list and all that called for that tool would be updated as the list 
would be reloaded everytime that bit of gcode was reloaded.
Atm I don't have an atc on anything, but several designs are kicking 
about in my wet ram for the 6040 mill. One that uses the xy motors to 
turn the er nut looks doable, but might need bigger motors to adequately 
tighten the nut.

Cheers, Gene.
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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