Hey guys I am looking at putting the parts together for my first MPCNC and wanted to know if these steppers would be okay?
Should the Z axis motor be smaller to cut weight at all?
That’s a lot of torque, most of us use motors at about 0.5NM. Fortunately more torque isn’t usually a problem. The tech specs look OK.
We are already carrying around 2kg router around on the gantry, I don’t think that the weight of the stepper motor is really all that big a factor.
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That is a fair point on the router side, I was planning to use the Makita Router on my build.
These were the other motors I had found:
https://www.aliexpress.com/item/32589488227.html?spm=a2g0o.productlist.0.0.5b05792aAqiWzQ&algo_pvid=12a1f393-93f0-4038-845b-38f0708df958&algo_exp_id=12a1f393-93f0-4038-845b-38f0708df958-8&pdp_ext_f={"sku_id"%3A"65365060817"}
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I’m using 84 oz-in motors for my Primo.
… YYC? Calgary?
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LOL so very close to the motors I just posted.
Yes Calgary, You?
Edmonton here.
Yeah, my motors are from stepperonline, bought from Amazon.ca and they seem to do well (Not currently available, it seems though.) I actually have quite a variety of NEMA17 motors used in various things.
I’m using the ones from the V1 shop for my LowRider, and one ZenXY table. Those might also be in the MP3DP V2 that I made, currently in use by my kids, or they might be other Amazon steppers. My main ZenXY is using the cheapest Nema17 steppers that I could find, which I bought for experimentation fodder. I think that my MP3DP “repeat” is using more of the same ones in the Primo.
All in all, I found that the driver/controller has made far more difference in the steppers performance than the motors themselves, provided that they allow and can take the set current. Since we don’t push the motors to their limits, the actual rated torque won’t be what’s used, just the portion of it that we drive the current for. Also, torque goes down as speed goes up, since the motor starts to act as a generator, producing its own voltage backwards, fighting the driver current. (This is why higher voltage power allows faster movement.)
Nice, we were just at West Ed for a family get away and I am up there for work a bit.
Wow sounds like you have pretty good fleet of machines. 
What drivers/board are you using? I have a Duet 2 now on my printer and like it so I thought I might go with a Duet 3 Mini or similar for this build.
I’ve got all of V1’s current crop of machines now.
The MP3DP V2 is running on an MKS Gen L board (Basically a RAMPS board) with DRV8825 drivers
The MP3DP Repeat and the LowRider2 are running on SKR Pro 1.2 boards with the TMC2209 drivers.
My ZenXY table is running on an old RAMPS stack. (DRV8825) Another that I build for a friend is running one of Bart Dring’s laser/pen controllers. (TMC2209 drivers)
I designed and built a CoreXY laser based on one of those Bart Dring controllers, too.
My Primo is running on a Duet Wifi. There are a couple of people here that can help you with the RepRap Firmware configuration for a V1 machine here, but only a couple. If you’re not fairly comfortable with how everything works there, it could be a frustrating experience.
I also have my other self-designed 3D printer, which is running a Duet Wifi.
Nice that is a pretty good collection of V1 gear.
I have a CR-10 v3 with a Duet board and I can by using Reprap but not an expert so maybe I should stick to Marlin for my first build. MMM
Since you look to have a fair bit of experience with these builds between these two tube options what would you pick?
Stainless Round Tube 304 Welded Ornamental 180 Grit 1.000 X 0.065
Or
Steel Round Tube A500/A513 (Welded) 1.000 X 0.065
It will basically be about 3’ x 2’ total size with a work area of about 2’x1.5’
I work for a company that sells steel tube (We have an office in Calgary, too), so all of mine are built using 1" welded DOM, .065" wall. My Primo is a year and a half old. I did have a bit of rust when I left something damp on the table, but it wiped clean with a bit of elbow grease.
Stainless is nice, but if you plan on keeping your machine indoors, it’s reasonably dry here, so a bit of wax is all you should need to keep the rails clean.
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