Does anyone have a suggestion on which rotary to purchase?
I bought this one: https://www.amazon.com/Engraving-Rotational-Tailstock-dividing-K11-80mm/dp/B07N2QQ6S5/ref=sr_1_2?crid=2HWDXIQ6R260L&keywords=rotary%2Baxis%2B4%2Bjaw%2B80mm&qid=1701542721&s=industrial&sprefix=rotary%2Baxis%2B4%2Bjaw%2B80mm%2Cindustrial%2C135&sr=1-2&ufe=app_do%3Aamzn1.fos.17d9e15d-4e43-4581-b373-0e5c1a776d5d&th=1. I later put a 4 jaw chuck on it, and swapped the motor for the little 1.2Nm Masso motor.
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Thanks, are there any more suggestions?
I believe most folks go with the one Adam references to, it also is the one 1F is using for testing, I also have this one it is pretty good for the money.
Pat
Where did you get the 4 jaw chuck from?
I got it here: Amazon.com
It was a pain in the ass to get the 3 jaw chuck off. There’s a few bolts and then it is just pressed on, but mine was very hard to get off.
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@adamfenn28
I contacted Masso concerning this very topic. The response I got back from Peter at Masso was:
The 1.2Nm steppers have a current draw of around 1A. The 2.0Nm and 3.0Nm steppers require a higher amperage DC output power supply than supplied by Onefinity and are best operated at 36dcv. All 3 steppers use the same wiring scheme connection.
So this is the link to the Masso website, they offer only the 2 and 3 NM stepper motor.
https://www.masso.com.au/product/masso-closed-loop-stepper-motor/
Where can I get the 1.2 Nm stepper motor?
P.S.: While editing this post I got corrected and an answer… Adam Thanks!
I don’t think so. I think you really need the 1.2Nm which you can only get from 1F.
Or you can buy the z motor with a brake and reuse the old z motor on your rotary.
That is, if you are using the same rotary. I tried the larger motors and they interfere with the jaws and potentially the stock because they are too long.
I’m not very concerned about the power supply though, even with the larger motor. I think you’d be fine with the stock one and worst case you’d blow a fuse. I suspect you could use a 4A fuse and be totally fine also. If you were really worried about it you could upgrade the power supply to a 450 and be super safe. But that’s not even a concern unless you want to spend more money or a more powerful motor than you need and can mount it on your rotary without interference.
Hi Adam,
many thanks for the quick reply!
I am not worried about running the rotary so fast that I get problems with the power supply.
I am very interested in ease of assembly, electronics is not my strong side, I would rather pay more for parts and shipping than reading through manuals about stepper motor drivers.
I do not have an elite yet, I am upgrading hopefully in the next 2-3 weeks, which also means that I cannot harvest the motor from the z-slider.
I imagined that there would be a problem with size from looking at the pictures of the 2 and 3 Nm stepper motors.
The 1.2 Nm is available neither on the Onefinity website nor on the Masso it seems, I will send an email or call them on Monday
My question now is, would the Masso 1.2 Nm motor fit the rotary though?
The 1.2 fits perfectly with the 80mm chuck. If the 100mm fits it would be SUPER tight. I have t tried that.
The wiring is pretty straight forward. I could walk anyone through it.
Hey Tom,
you could re-use any open-loop bipolar stepper, but for connection to the Masso G3, you would need to buy an external stepper driver like this one, or this one for closed-loop functionality. Masso G3 supports all kinds of steppers and stepper drivers.
You can buy the 1.2Nm Masso stepper from Sherline. They use it for their mills and on one of the rotary axis setups that they make.
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I bought mine from 1F.
Pat
These wouldn’t actually be closed loop motors thought, right? I think this would just fake the funk so you can use an open loop stepper, and it could still be in the wrong position since the motor doesn’t support the signals to communicate that.
I checked the specifications of the Masso 1.2Nm motor, it seems that it will clear the stock but will hit the screws of the chuck. I could grind those screws possibly, which seems the easiest and most cost effective solution right now. We are talking about 4mm.
I have this Rotary: https://www.amazon.com/gp/product/B07B2RX1BK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
With hindsight I should have bought this one which seems easily upgradable to the Masso motor.
https://www.amazon.com/Engraving-Rotational-K12-100mm-Dividing-Harmonic/dp/B08ND96QBF/ref=sr_1_4?crid=28URBPZ1Z9USQ&keywords=rotary%2Bcnc&qid=1702239326&s=hi&sprefix=rotary%2Bcnc%2Ctools%2C114&sr=1-4&th=1
The problem with an external stepper driver is that is requires a lot of time to find out how to connect it. I do not know if I have enough patience and time to learn how to do that. If someone writes a tutorial I would be eternally thankful.
That first one is the 100mm version of my 80mm. I hadn’t seen the second one. The motor mounting that way is great.
In the end, I suspect. you’d be fine with an 80mm version anyway, which would easily clear. They both use the same 65mm tail stock, so you’re limited to small diameter stock anyway, unless you raise your system up.
I will order the Masso motor and grind/file away a little (about 2 x 4 mm) of the heads of the four hex screws. The Masso motor is 87mm deep, I will keep you updated.
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I can mount up to 95mm stock in my chuck, a little more if I cut back the plywood slide.
Also here my mounting system for who might be interested. The rotary is permanently mounted to the back of the machine but sadly has not been in use much because I was waiting for the Elite upgrade.
Adam, I would greatly appreciate help connecting the motor to the Masso controller once everything arrived. Thanks. Meanwhile I will order the pins mentioned in this thread. What kind of cable do you use?