On Tuesday 12 February 2019 14:51:11 Marshland Engineering wrote: > Run several misters and you need around 25 PSI to draw the cutting > fluid, mist the liquid and blow away the swarf. > > I don't like my big compressor working hard to produce 25 PSI so I'm > busy setting up a small 3 phase motor to run and oilless pump with a > small VFD. This way I can set the speed of the motor to give me the > pressure I want and it only comes on when the spindle starts. I do a > lot of aly and I'm tired of the coolant splashing everywhere. PS > remember that the mister will in time leave the machine covered in > oil. It too has its drawbacks. > > Cheers Wallace. > Which, if the oil is safflower oil and you don't clean it up for years, will eventually set almost as hard as a rock. But it sure works great on alu. That machine is now dead, but I went out to get that mister today to see if I could cobble up a mount on the 6040, and found the atomizer piece missing. All that was left was the little bitty filter I'd used as an oil container & some of the hoses. Holds about 3 oz. So it appears I'll have to saw off a bit of brass, find my teeny brass tubing supply and hope I have enough to make another. Unfortunately, the hobby shop where I bought it closed up 5 years back from old age, so now I am at ebay's time sinking mercy at getting some more. The only place I might have moved it to would be one of the Sheldons tool drawers, thinking I might have had thoughts of using it there.
But I also need a smaller one with a more bendable mount. And a delivery nozzle I didn't make for the first one 17 years ago. In the meantime, I've inserted about 10 hours worth of cooling delays in the panel code 5 minutes at a time, bringing a 12 minute job to 11+ hours, and if worse comes to worse I'll set a fan on it, and let it stop for cooling. But if I do that, I've got to rig a relay to shut the spindle down during the cooldown period as the bearings will fail fast enough. I'll cut into the speed pot circuit, and open the cw end of the manual pot to stop it. Pain in the butt, but this vfd is one of those anyway... :( But I need to make up what little mind I have left and just git-r-done. Legs and feet are about used up for today though. And nearly time to put on my chefs hat too. All advice considered, thanks Wallace. I used safflower oil the last time because it has the highest flash point, but I think this time I should use a water mixed emulsion as it would cool this thin stuff better. Suggestions for your favorite dragon drool are? 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
