John, I don't remember the name/number of the coolant I had. I got it almost 7 years ago and when I closed my shop two years ago I still had 35 gallons in the 55 gallon drum. It was their top of the line machining coolant. It has probably changed names now but I am sure whatever they call it it is just as good if not better.
HTH Stuart On Mon, Nov 8, 2021 at 11:47 AM John Dammeyer <jo...@autoartisans.com> wrote: > Stuart, > I found a Hangstefers supplier in Calgary which is quite far from Victoria > BC. Which Coolant are you using? > Thanks > John > > > > -----Original Message----- > > From: Stuart Stevenson [mailto:stus...@gmail.com] > > Sent: November-05-21 12:55 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Project Progress > > > > Hangstefer's coolant concentrate will stay in the sump indefinitely. > > I had some in a sump (150 gallon sump) for over 4 years without daily > use > > and never any attention more than adding concentrate as necessary to > > maintain level. Never an odor any time I started the machine. It did NOT > > stink and never molded. I had a skimmer on the sump that ran almost all > the > > time but the sump was partitioned and two of the three sections had an > oil > > cover on them. Still not a single problem with coolant in over four > years. > > > > HTH > > Stuart > > > > > > On Thu, Nov 4, 2021 at 1:36 AM John Dammeyer <jo...@autoartisans.com> > wrote: > > > > > I used the big 1/2" one for the large pocket and the smaller 5mm one > for > > > the smaller pocket and profile. The surface finish, given my crappy > cast > > > aluminium, was really nice. > > > > > > My mill does have a coolant pump but I don't know if I use the mill > often > > > enough to fill the reservoir with coolant that then goes mouldy and > > > stinky. So I'm working on a compressed air mist coolant system. But > maybe > > > having a secondary reservoir that pumps out the main one and adds an > > > aquarium bubbler would work for the flood system. So in the last 12 > years > > > I've never used coolant. > > > > > > John > > > > > > > > > > -----Original Message----- > > > > From: andrew beck [mailto:andrewbeck0...@gmail.com] > > > > Sent: November-03-21 10:52 PM > > > > To: Enhanced Machine Controller (EMC) > > > > Subject: Re: [Emc-users] Project Progress > > > > > > > > What cutters are you using? > > > > > > > > As a sideline here in New Zealand I buy and sell tooling so I'm > always > > > > testing the limits. > > > > > > > > And can probably advise a bit > > > > > > > > On Thu, 4 Nov 2021, 11:29 John Dammeyer, <jo...@autoartisans.com> > wrote: > > > > > > > > > I've been using LCNC quite a bit (for me). In the photo there > are two > > > > > steel spring collars that were entirely done with the mill. I > could > > > have > > > > > left them as large disks with just a stepped hole and the set screw > > > holes > > > > > but what's the fun in that. > > > > > > > > > > > > > > > > > > > http://www.autoartisans.com/mill/SpindleControl/TrialFitOnSpindleCover-1.jpg > > > > > > > > > > The spindle cover casting (10lbs of scrap aluminium) was machined > in > > > the > > > > > places I needed flat surfaces and to get rid of a bit of sag in the > > > casting > > > > > mostly for looks. I'd occasionally spray a bit of WD-40 but mostly > > > just > > > > > held the shop vac to clean up the chips. > > > > > > > > > > > > > > http://www.autoartisans.com/mill/SpindleControl/SpindleCoverplate-4.jpg > > > > > > > > > > Essentially between 1000 and 2000 RPM, 2 flute 1/2" end mill, 25% > step > > > > > over, about 2.5 to 5 IPM IPM and a depth of cut of about 0.1" for > each > > > > > pass. This created chips that did not melt onto the tool bit and > left > > > a > > > > > quite nice smooth finish. > > > > > > > > > > But with those parameters it did take quite a while. OTOH, it ran > > > > > automatically and other than check on it periodically and vacuum or > > > blow > > > > > away chips I could do other things nearby. > > > > > > > > > > If I enter the parameters into Machinist Toolbox with a target RPM > of > > > 1500 > > > > > I see it suggests a tool feed rate of 21 IPM. I think that would > melt > > > the > > > > > chips without flood coolant. Since I didn't want to screw it up > and > > > have > > > > > to cast it all over again I was very conservative. > > > > > > > > > > Was I too conservative on this? It's been suggested by a friend > who > > > runs > > > > > MACH3 that he dials in a much faster feed and spindle rate and then > > > hauls > > > > > back on the sliders to reduce it to very slow and then in small > steps > > > bumps > > > > > up the speed until it feels right. > > > > > > > > > > > > > > > > > > > > Suggestions are welcome. > > > > > Thanks > > > > > John > > > > > _______________________________________________ > > > > > Emc-users mailing list > > > > > Emc-users@lists.sourceforge.net > > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > Emc-users@lists.sourceforge.net > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > -- > > Addressee is the intended audience. > > If you are not the addressee then my consent is not given for you to read > > this email furthermore it is my wish you would close this without saving > or > > reading, and cease and desist from saving or opening my private > > correspondence. > > Thank you for honoring my wish. > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Addressee is the intended audience. 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