I found a link for a site that sells Alt Mill stepper motor covers for $49.99 for all 4 motors.
For those of us who do not have a 3D printer, this is a good deal.
The site has an installation video.
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Seems steep for a 3D printed item.
Is there a market? I created some and posted on the FB group - guess I should have put them on my Etsy Store instead 
May be a silly question… but is there a need for covers?
For me it was more of a precaution to hopefully help 1) prevent hitting the motors themselves and 2) protect the wiring from being hit/pulled.
Any one willing to share an STL?
I pinged you on the Discord group with the version I made.
Thanks! It’s printing now.
The motor guard is indeed a tight fit and isn’t going to go anywhere. Unfortunately my printer produced quite the dog’s breakfast with the ventilation slots. Your cover is very nice looking with crisp clean ventilation holes - way nicer than the crap I produced I printed in PETG because of the potential heat but I might try ABS to see if that comes out cleaner. While nobody is going to examine the cover up close, I know about the mess of a print and will want to try and do better.
I am also concerned about the cover reducing cooling with the amount of plastic covering the motor. I am thinking that would reduce cooling by ambient air quite a bit. I will think this through a bit more and see if I can come up with a better solution. For now the cover is installed and it’s protecting the X gantry motor which sticks out into a walkway and was my chief concern. There is no need to protect the two Y axis motors or the Z axis motor.
Thanks, I see there may be a good idea to guard the wires.
I have not got my mill yet. still a few weeks out. All this information will be in mind when i finally assemble.
Thanks for the input.
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I’ve looked at the ones on the Etsy site. It seems to me that they don’t offer any protection against “collisions” with the motors. Their primary function is to protect the wiring connection. Am I missing something here? If I am correct, it would seem that any cover needs only to cover the area where the wire connects. This would leave the rest open to address any cooling/air flow concerns.
No, you are not missing anything. The wires could snag but they are also very easy to inadvertently disconnect from the motor. Physical protection for the motor itself is not needed. If you hit it hard enough to damage the motor you have other things to worry about … no, you can’t hit it with a forklift and expect not to have any damage 
My second go at printing the motor guard in ABS using a different printer improved on the first attempt but it was still a dog’s breakfast. Funny thing though, one side came out perfectly fine but the other 3 sides not so much.
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Mine wasn’t perfect but came out pretty clean in PETG with my Bambu X1C.
Unless you are worried about the aesthetics of it, I’d say good enough
I tried to make the angle enough that supports wouldn’t be needed for most printers - not to say that there isn’t a better approach.
I suspect that I haven’t dialed in 23 of the 5000 parameters you need to set for 3D printing … and I have no clue which 23
I was surprised though getting one good side and 3 crappy sides in the ABS print.
Unfortunately, while I can ignore little issues, I am not one for leaving total crap sitting out in the open (I suppose I could put a bag over it )
@Jens Look at it this way. The bag would protect that protector. 
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Hi Verno, I sure could have used one on my Y2 motor. Machine is positioned so that Y2 motor is in a main walkway and I have a tape measure and pouch on my belt. Walked by one day and tape caught the data cable plug and ripped out 2 leads! Ouch. Tried to repair myself and it worked for 2 days and failed again. Had to order another and this was during the time of cable shortages for the altmill. Replaced the cable and built crude covers out of plywood and aluminum angle.
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A free .stil file is available from Sienci for those who have a 3D printer.
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