On Wednesday 17 March 2010, Slavko Kocjancic wrote: >2010/3/17 Gene Heskett <gene.hesk...@gmail.com> > >> On Wednesday 17 March 2010, Slavko Kocjancic wrote: >> >Frank Tkalcevic pravi: >> >>> I see that a commercial "Z axis preset gauge" is A$275 down >> >>> here, so a DIY alternative is attractive. (And it's >> >>> advertised with "LED lamp", but no mention of an electrical >> >>> output socket, so maybe no use, anyway.) >> >> >> >> I have one of those >> >> (https://www.machineryhouse.com.au/Products?stockCode=M691) - it has a >> >> spring loaded plate, an LED and a 3v button cell battery. Complete >> >> the circuit and the LED lights. I removed the button, drilled a hole >> >> in the side, and added a cable to make it a touch off probe (initially >> >> I used >> >> it >> >> >> with my manual mill and DRO for touch off - exactly 50mm high). The >> >> top of the plate is all scuffed up from raming a tool into it - twice >> >> while developing touch off software, and once by jogging into it a bit >> >> too fast. I need to have it reground. >> > >> >Wau $275 for 3 switches one batery and LED? >> > >> >just see *http://tinyurl.com/yhcslo4* >> >> And that is even better. Use metal screws set into HDPE, but I believe >> I'd put a spot of some hard, wear resistant material in the middle of the >> pcb for >> the actual touch point. Something that won't scratch near as fast as the >> pcb >> material. > >Probably some cap in shape of mushroom. Better material and cap to keep >swarf out.
And that sounds like a good idea too. But it needs a flat top, just in case you miss the exact xy spot. :-) -- 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) To the landlord belongs the doorknobs. ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
