On Thursday 15 September 2016 06:57:27 andy pugh wrote: > On 15 September 2016 at 11:04, Gene Heskett <[email protected]> wrote: > > But, if I could 'net' the edge trigger parameters, > > You can't net parameters. You can only net pins. > http://linuxcnc.org/docs/2.7/html/man/man9/oneshot.9.html > Tells you which are which.
Ok, then as soon as the coffee and my morning pills have kicked in, I'll go carve a bit on the hal file for TLM. The story so far: Its next job is to make a base for the phase II on the Sheldon, replacing the compound. The ways on the compound are junk, sprung to about a 20 thou taper, and the "ears" where its bolted to the carriage are sprung just enough to let it rock, so I have a block of cast that currently weighs about 25 lbs that will be carved in stages, first to a cylinder the same size as the base of the old compound, then the side grooves cut on the mill to copy the shape of the compounds base, and the holes for the hold-down bolts drilled. Then back to TLM but mounted off-center about 3/4", drill the hole for the phase II hold-down and tap it, make the top about .001" concave so its the outside edge of the phase II that bears 95% of the hold-down bolts force, a trick I learned on TLM to stop the tool post from being turned by cutting forces such has a dull boring bar might subject it to. Hope fully, the top of the cross slider isn't similarly sprung. The last operation then is to turn it to this off-center contour with a g3 curve, advancing both x and z in the loop until the top is the right size for the phase II, and the bottom will clear any large things I might be tempted to mount in that 8" chuck on the Sheldon. That was, maybe still is a problem on TLM, but that same piece replaceing the compound on it has now been similarly carved, hopefully enough I can face cut all the way to the center as I make that piece for the Sheldon. The idea of the off-center is so that this base can be rotated, moving the tool post to adjust such clearance issues. Then I need to make a ring for the shop made collet puller to rest against on the rear of the Sheldon's spindle so I can also use 5C stuff for smaller work. And while TLM is doing that, I can drill & tap the bottom of the Sheldon's saddle for some 1/4" bolts to hold a brass, full width front gib in place. I am still removing paint from the bottom of the bed ledge so I can use an area that has not been chewed up by the OEM postage sized tabs that served that purpose, one of which was also equipted with a locking bolt to serve as a carriage lock, so the first 3/16" of that area is well trashed because that bolt was bent and there was no position that didn't drag and wear on the bed lip short of removing it completely. The high wear area is cut about 20 thou deep! Test fits indicate I may need a few thousandths of shim stock to fit it right. OTOH, it might fit if I can get rid of all the paint. Acetone removes it, slowly, and I've spent at least an hour already doing that. I'd make tapered gibs, but that job for TLM was about 2 weeks work because I didn't really have enough heat to properly anneal the brass, so I had to hammer and file it straight, a process that always came up with a twist, until I found the file wasn't flat! Things went a lot better after I found a file that didn't rock when laid on a flat surface. That made a huge difference in how TLM made finish cuts. I can almost quit calling it a toy! OTOH, that side project improving TLM did kept me out of the bars for a while. :) Thanks Andy. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
