Vertex V-HV-4 & HBM BF 25 Vario to Nema 23 bracket

myminifactory

I had some stepper motors and drivers left over, so I built brackets to mount them on my small milling machine. The ABS plastic might not be strong enough, but I wanted to try it anyway. And indeed the bracket for the Z motor broke a little bit between the layers during mounting. Luckily, it was easily fixed with acetone. It's possible that this wouldn't have happened if I printed these brackets in a finer resolution. In this case, I printed them at 0.3mm resolution because I used 3mm filament and I wanted to save time. The infill is 60% because I feared the plastic would not be strong enough otherwise. The first test was milling a bicycle form out of MDF. The only issue during this test was too much play in the motor to shaft connection. I fixed this by putting some nylon blue tape in the motor to shaft coupler. I did this on both the Y and Z axis. Unfortunately, I forgot to take a photo of this milling test. But you can see it standing on the background in one of the pictures. After that, I tried milling some plywood. This time, I made an Hex-Key holder that exists out of two parts. I wanted to test the accuracy of the machine with these plastic brackets. It was good enough to make the two parts fit super tight. I just hammered them together and the connection is held by friction alone. But as you can see on the photo, I needed to clean up a lot after it came out of the milling machine. And to be fair, these tools are meant for metal, so I decided to test Aluminum. This time with a 4th axis. In this test, I milled a gear. You can see it on one of the pictures. In this case, I made a gear with 36 teeth because that's easy to make Gcode. Of course, I first had to make its basic shape on the lathe. And yes, I could have done that also on the milling machine, but the lathe was faster. And yes, I know that my setup is not very professional (see pictures) with the end switches. That's because it's an experiment after all. I may change it in the future, I may remove them.... but that's not advised for beginners. Also, I know the display doesn't show the RPM of the mill. Still need to fix that some time. So I can say that these plastic ABS brackets hold very well and the machine moves within 0.01 mm for now. The machine has run for around 40 hours now and all is still solid. The milling machine is a HBM BF25 Vario, the rotary table is a Vertex V-HV-4, the motors are Nema 23, the bolts I used are: 8X M3x10 and nuts, 8X M6x60mm and nuts and washers, and the screws for mounting the bracket to the Vertex rotary table are included with this table already. If you have any questions, feel free to ask. I hope I didn't forget anything or make a mistake.