Another PM1340GT

jlchapman

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Apr 4, 2017
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Hi,
I'm new to the Precision Matthew forum but not new to Hobby-Machinist. I'm a hobby machinist and gearhead. I just lately sold my Central Machinery 12x36 and moving on to much better equipment. This is not my first Precision Matthews product, I have owned a PM950 Mill for about 8 months and its been great.

Well Matt had another shipment of PM1340GT lathes arrive and one of them has my name on it. Of course after reading all the excellent things MKSJ has been doing with VFD's and the PM1340GT, I bought the 3-phase version. I'm sure some questions will come up. ZMotorsports has also been a great influence in the purchase of the lathe and his modifications and enhancements.

So now I have to decide which path to go down on implementing the VFD. Time will tell.

Jerry
 
I initially did my own VFD wiring job on my 1340GT because I wanted the darn thing up and running! :)

Worked fine, but after a year or so I contacted Mark and he put together a nice setup for me with three braking stages and the micrometer stop. Mark does really, really good work.

Oh, and welcome to the family. There are a number of 1340GT owners here, with more coming in all the time. :)
 
Thanks wrmiller and zmotorsports! I have already borrowed some ideas from Mike's setup and created my tool holders on the unistrut. Nice to have some of that ready to go when the lathe gets here. My last lathe had a ton of drawers, so just have to plan smarter on this one.

I'm having Mark do the control system for my new lathe. The carriage micrometer stop has been shipped to Mark. So if all the planets line up, should have a lathe arrive and the control system too! Big Kudo's to Mark for taking the time to build the control system!

Jerry
 
Thanks Bill and Jerry for the positive comments.

The custom front panels make for a very clean install with everything mounted and socket/plug connections to the control board. The downside is they take about 10 days to be made and delivers. Jerry's system on the bench being tested:
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control Boared.jpg
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Thanks Bill and Jerry for the positive comments.

The custom front panels make for a very clean install with everything mounted and socket/plug connections to the control board. The downside is they take about 10 days to be made and delivers. Jerry's system on the bench being tested:
View attachment 268015
View attachment 268017View attachment 268016

You are a master at those controls Mark.

Great job as usual. Makes me wish I had one of your systems.:encourage:

Mike
 
Yea, and I need to get one of those front panels. When Mark made mine it was just a blank piece of aluminum. My Sharpie writing keeps coming off. ;)

Great work as usual Mark. Well done. Jerry you are going to really like this control system. After the initial learning curve, it just feels natural. :)
 
Mark's setups are so gorgeous I kinda want to buy one without even having the lathe!
 
I have already received Mark's control system and it is very nice. Mark does a really good job. His instructions are top notch. The install should be fairly easy, just pay attention to the instructions. Front panel looks even better in person. Mark saved me a lot of money on the enclosure, gave me an Ebay link for a $75 enclosure. Made a best offer for $60 and it was accepted, not bad. The enclosure is normally $200.

I have been working on my VFD enclosure since I'm still waiting on the lathe. Scheduled delivery is for tomorrow. I have the majority of the wiring done and tested for the high voltage side and 24v power supply. I did the 4-120v outlets on the side of the enclosure. The enclosure also includes the 24v power supply which is Mark's latest design. I have some wire clamps, screws and more electrical connectors coming Thursday, so disregard the electrical tape and the loose wires to the front panel lamp. I was maybe a little bit OCD installing gray screw down end brackets on the Din rail.

OutletTestRot90.jpg


Now with the VFD and brake resistor mounted.

LoadedNotWiredRot90.jpg
 
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Looks very nice so far Jerry, clean install and like the DIN screw down for the neutral. Those fiberglass enclosures work nice, but cutting the vent holes is nasty due to the glass fibers. I check the systems before they ship, the latest speed pots which I have been using are 1K ohms ETI made in Canada, I have been amazed that they have been spot on as to specs. Full scale is 1.0002K and 50% measured at 0.5021K, so very linear. Look forward to seeing your system up and running soon.
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