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I recently had a stepper motor driver failure on my Tormach PCNC 1100 Series 2, and went through the process of diagnosing the problem and replacing the hardware.

I searched the forum here and...

This link works for me:

Coolant proofing Tormach electrical cabinet - YouTube

It's true! I've made a few small modifications to it since I installed it (like the time I ripped the Z bellows cover off with the vise while going through my machine warm up cycle), but it remains...

Nice!

Here's my YouTube channel:

https://www.youtube.com/user/mc2racing7emh

I'm not nearly as advanced as a lot of the other folks posting Tormach (and non-Tormach) videos. Family and job keep me...

It's not labeled as the VFD Interconnect in the Tormach Power Draw Bar manual, just in the Tormach ATC manual.

I mentioned this in a different thread, but thought it might be worth sharing here too. I finished my power draw bar installation today and included the spindle interlock while I was doing it. I...

I finished my power draw bar installation today and included the spindle interlock while I was doing it. I recorded video of the installation to show what is involved in the modification:

Tormach...

I've improved the cover over the control cabinet. Here's the video:

http://youtu.be/HTcYZxkuDRk

Nice. I'll get a few and try them out.

I recently put the TiN-coated "general" insert in the SuperFly through 17-4 PH (Condition A, which I've heard is sticky compared to the aged grades of 17-4 PH). I noticed a couple things.

First,...

Fixturing seems to be at least 75% of any machining task. Thanks for sharing your work and expanding my horizon.

That's a pretty good idea. In fact, since I have three ports to connect coolant hoses to, I could disassemble the ring and do something like putting three nozzles on each hose. Might minimize or...

Hah! My three year old was in the garage with me and requested that she get it back for the second time. I couldn't convince her that I needed to keep it, so I managed to swing a trade for a rubber...

The Loc-Line circular flow nozzle kit is the last planned mod/test I have for the coolant system upgrade. I wasn't convinced that I'd like this one, but it seemed like an attractive mod when I first...

Hah! Yeah, it's definitely a big difference now.

I have another part I'm considering making a fixture for that will use the pitbull-style clamps, or something along that line. I've been dying to...

Here's the first set of fixtures I made for machining a batch of eight parts at a time. I didn't understand exactly how the Mitee-Bite clamps worked when I designed the first fixture (I thought they...

I had the coolant tray under the table overflow recently when I was out of the garage for a few minutes. It's been running for several months without any trouble, so I suspected a clog but didn't...

I finished compiling the video of the spindle rebuild the other day. Here's the link:

Tormach PCNC 1100 - Maintenance: Spindle Cartridge Rebuilt Process - YouTube

I've completed the neoprene chip guards over all of the axis bellows; Z-axis, Y-axis front and Y-axis rear. I even put a bonus guard underneath the head to prevent chips and coolant from going into...

Not really. When it is backing up like that it happens when the basket is filled to the top. It clogs about every third one of these:

Tormach PCNC 1100 - Coilover Suspension Spring Perch...

That looks like a fantastic idea for a coolant return upgrade which I may have to incorporate. Here's what the coolant system looks like now.

Tormach PCNC 1100 - Further Flood Coolant System...

Scaling the values like this worked very well I completed the test of three 1/2" Loc-Line hoses with straight nozzles this evening. The average flow rate over nine samples was 505 GPH. With...

Here's what 300 GPH of (total) flow at the nozzles and a clogged chip tray look like:

Tormach PCNC 1100 - Clogged Chip Tray - YouTube

The basket has to be filled pretty close to the top to get...

Where did you measure the temperature and how? I recognize that somebody will criticize your method if you publish it, but I'm looking for something to use as a comparison when I test my spindle...

Out of curiousity, how did you ensure you were pressing only on the outer ring of the bearing and not on the inner ring?

Thanks for the thorough reply. I just reread my own post and I'm pretty unimpressed with how incoherent it is. I think my 5 month old must have been sitting on my lap at the time demanding too much...

I pulled out my bearings over the weekend when one of them started screeching intermittently during my belt testing (...

That's an artifact of the sound normalizing routine in the camera I recorded this video with. The Fenner belt is *definitely* louder.



That's exactly what I'm in the process of measuring with...

All,

I installed the Fenner "Power Link Plus" 3/8" spindle drive belt last night and ran some back to back tests which I recorded on video. The purpose was to measure vibration, but I decided to...