On Wednesday 02 October 2019 10:16:07 Les Newell wrote: > Hi Gene, > > > Generally that pressure in the bottle is just enough to lift the > > liquid to the top of the gantry. Max of say 13" of water, or about > > 1/2 psi. Difficlt to set with a $10 regulator. > > On my setup the shop air comes though a solenoid valve then is > regulated down to ~20psi and fed to both the bottle and air jet. The > feed to the coolant jet has a non return check valve and a needle > valve to regulate the flow. My oil reservoir is a modified air line > water trap. > > > I can't remember if there was a time when the mist button was active > > while running a program, but it would be handier than bottled beer, > > hint, hint. > > I wrote a component for this task a while back. I thought I submitted > it to be added to LinuxCNC but I couldn't find it in master. I have > attached a copy. > > Les > > On 01/10/2019 21:01, Gene Heskett wrote: > > On Tuesday 01 October 2019 12:05:52 Les Newell wrote: > >> A while back we discussed misters and the mods I did to a mister. > >> The jet is 2mm with a pretty small annular ring around it. That > >> sounds pretty much like what you want. > > > > Precisely. I had one made on the old hf mill, but it kept running > > into fixture bolts and eventually destroyed itself. > > > >> The machining work involved is just drilling one 2mm hole in a > >> lathe and cutting the 2mm tube to length. It needs pressurized > >> coolant but your coke bottle setup would do the trick. > > > > Generally that pressure in the bottle is just enough to lift the > > liquid to the top of the gantry. Max of say 13" of water, or about > > 1/2 psi. Difficlt to set with a $10 regulator. After that, the > > siphon effect keeps it flowing rather gently. The bottle is, unless > > its plumb full, below the nozzle, so flow stops when the air > > solenoid is turned off. The bottle sits on a small sheet metal shelf > > about an inch above the bottom of the gantry riser. Turned off, its > > half an hour back draining into the coke bottle to empty the > > plumbing. And about a minute to refill when the mist button is > > enabled again. The air valve vents when off, taking pressure off the > > whole thing in one grand thup. > > > > I can't remember if there was a time when the mist button was active > > while running a program, but it would be handier than bottled beer, > > hint, hint... OTOH, putting the M7 M9 around the active cut in the > > gcode works well, and reduces the AC duty cycle a just noticable > > bit. Makes me do it right that way ;-) > > > > I'll see what I can do once I see about the missus lunch and todays > > fish wrap, if she's awake, she wasn't at noon local. I'll nip off a > > 1/4" of that cap tube, clean up the ends, and see about soldering > > that into the inner nozzle, then rigging a 1/4" of something to > > bring the annular gap to the end of the brass adjustable cone into > > scale for the cap tube's OD. > > > > Except I've used up the brass tubing I had in 1/32" increments so > > they fit into the next one up or onto the next one down. And the > > old boy that ran the hobby stop up in bridgeport closed up and > > retired about 3 years back. So I need to find another place to > > source it. > > > > Google and hints welcomed. > > > >> Les > > > > Thanks Les > > > > Cheers, Gene Heskett thanks Les.
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) 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> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
