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Arizonavideo makes a high quality belt conversion and I highly recommend it. Couple with a VFD you will have tremendous speed control.

I installed an Accurite DRO on my IH mill (did the same to my ENCO lathe)

Congrats on your early sucess. It is indeed exciting when you make the first axis move after a kit install. I remember the same moment on my machine.

Yes, the servo is of course a fixed component. I did not fully think it through, I was just so surprised to see if projecting upward. Are there bigger servos inside the redesigned covers. My mill...

I visited your website today and saw the new product page. I see that you flipped the Z servo so it points up. For anyone with low ceilings that is going limit Z travel.

Interesting. How many CFM did those grinders consume. What did you do with them (Engraving, drilling, etc)

There are a number of designs for "aux spindle" using routers, but has anyone outfitted the IH mill with a 30k-60k RPM air turbine grinder??

Any licensing issues should only effect Bobcads ability to do a call out to Predator from Bobcad. If you have a stand alone license for Predator, save the nc file from Bobcad and open an instance of...

Nobody said the feed to the VFD was anything but single phase. You can feed many small VFDs single phase 110V, single phase 220v, or 3 phase 220. In each case the inputs are internally converted to...

Another option, is a VFD and 3 phase motor. Many VFDs will operate on 110v or 220v and provide 3 phase 220. I have a VFD on my Mill, and on my drill press. Small VFDs are available for not much...

Your troubles setting pulley ratios may simply be that Mach does not like ratios above 1.0. To define such a ratio you have to check "reverse" and enter its reciprocol.

Spindle speed can also drop if you are doing things in the Mach3 GUI. The foreground activity seems to disrupts the puleses to the spindle controller my system. No problems when running code...

While this was not the most active forum, that last couple of months have seen next to no activity. Whats up???

The y ball screw mount on my mill (circa 2010) is held by two button head bolts. And as I recall you would need to get to it from below as it is fastened to the underside of the mills base.

As of this writing, I still have OEM rollers (well greased) in play. Had them up to 7000 for a short burst just to see if I could. I have some SKF AC bearings on order. Will likely wait until the...

I am also a happy camper with a belt drive conversion from arizonavideo (Dave).

I traded emails with Tony, and they are diligently working on getting things squared. My interaction does not involve a backlogged machine so I have nothing to add. You can expect there will be a...

So it appears the IHCNC has new owners and a new name. I spoke to a gentleman named Tony (that has Tommy's old cell number) and he indicated that they are taking over the business and moving it to...

OOps, key thing you are not describing is switching pulleys on the main mach screen. The config dialog for the ratios simply sets them. You must switch between the pulleys manually.

Opps, did not read the whole thread to see you had done a belt drive conversion my bad.

I still suggest 60 hz.

You can compute motor RPM at 60hz from the nameplate on the motor. Then compute...

What I suggest is that you set your VFD at 60 hz when setting the pulley ratio. Get yourself an rpm scan tool and put a marker on the top of the spindle.

Once you have the VFD set, you should...

Every engine hoist I have come in contact with has a max rating (1 ton, 2 ton etc) and max boom position. The two do not happen at the same boom length. So I would say it would be dicey with a 1...

The limit switch for X has two nubs the the table screws contact. For Y and Z, the limit switch (fixed mount) should have a 1/4 inch bar with locking collars and another "box" moving mount. There...

The table end stops are the T-slot thumscrews that came with the manual mill. I have fabbed my own because I mounted a dro scale on the front edge of the table.

The problem I see with the closed loop acting at the servo/encoder level is it is not measuring table/sadle movement but ball screw movement. Any backlash will come in to play. My thinking is a...

Let me rephrase, proxy closed loop. That is Mach knows where it want to go (calculated value), directs servo/stepper to get there, and DRO ultimately says if it go there. Mach adjusts as needed.

I am curious to know if anyone has connected X and Y dros to Mach 3 and used them to provide closed loop positioning. The current glass scales from Accurite output square waves and it would seem to...

Bob, I did not mean to imply I was not a savy PC user (I was parotting IH, as I had a discussion with them about the need for the shaft to come through the back cover). I am in fact a software...

The knobs are for manually backing the table/saddle off the limit switches. I think this was to give you a way to escape from a catch22 in Mach (at least for the less savy PC user) where the limit...

On X, if you do not have the spacer, the servo mount base will contact the saddle and limit travel to the "left". The spacer clears the saddle and allows the table to travel deeper. Travel to the...