hello im 1 month in teaching my self the art of cnc.
I dont think i need to really explain step by step.
whats the saying a picture = a thousand words.
so this is my table top router. about (x)500 mm X (y)500 mm X (z)200 mm
with the cheapest material i can find. so dont judge me on the cheapy look.
i always fear the loss of performance and accuracy of somesort when i go the cheap way.
i guess i have to see how it goes.
*i made the little tiny cnc out of free cd drives i got for free from local computer repair shops.
just to make sure id understood wth is going on before i invest i good amount of money in to this "educational project."
once i got the little stepper motors moving with the arduino grbl shield with the universal gcode sender, i knew i was good.*
i also made this pen holder for my first test runs. you can see the drawings in the first picture on the back of the cnc machine.
(this is when the "cheapy" material i used first became an issue the x,y,z axis are not truely square).
i gave the pen a little holder so it would slid up and down and then i added a rubber band for some down ward tension, and the
tape would hold the pen in place so the the tension of the rubber band doesnt just make the pen drag and actually get picked up when the z axis lifts.
harder to explain then expected lol
so i was using inkscape to trace and create gcode using the plugin but i didnt like it. i wanted to learn legite cad/cam software. so i did some research
and found out that auto desk offers 3 year demos for students so i found fusion 360. Spent the past week and thanksgiving watching youtube videos
on how to create sketchs and etc. so i finally got it. somewhat....
are my stepper motors to wimpy?
or is it my settings?
why is it skipping steps like this?
i read somewhere that if you move the steppers in to small increments it loses its torque or something. so is it that? i have it cutting only 0.5 mm at a time.
Electrical Specification:
- Manufacturer Part Number: 17HD48002H-22B
- Motor Type: Bipolar Stepper
- Step Angle: 1.8 deg.
- Holding Torque: 0.59N·m(84oz.in)
- Rated Current/phase: 1.7A
- Phase Resistance: 1.8ohms
- Inductance: 3.8 mH ±20% (1KHz)