We use cookies to personalize content, interact with our analytics companies, advertising networks and cooperatives, and demographic companies, provide social media features, and to analyze our traffic. Our social media, advertising and analytics partners may combine it with other information that you’ve provided to them or that they’ve collected from your use of their services. Learn more.
Hi. I have a diy cnc with grbl i have set up every thing, calibrate the steps. I have now one problem, no meter what cutting depth i set it does not go more than 0.3 mm. I am setting the starting point above the wood with a paper. i am trying to make a clean hole about 19mm and when it finish it only 0.3 mm. can anyone help plz?
Yes if I jog i can touch the printer frame bottom all the way down. Yes I have calibrate the steps when I jog 20mm it go 20mm. Ok I will change from 0 to 255 but do you thing that is the problem?
No is not a printer sorry for that. I have a 3D printer and maybe I got confuse because I have print all the parts for the CNC.
My machine is a diy with working area of 725mm on x, and 425mm on y, and about 70-90 on z. The movement is on 8mm threaded rode on x,y and for z 8mm rode with gt2 belt.
I am running grbl on arduino uno with cnc shild.
I have calibrated the steps. When I jog I can touch bottom but no mater what I set when I want to curve it does not go below 0,3mm and it drives me crazy. I do know the basics because I have a diy AM8 3D printer but this I can’t figure it out. I have attached a photo but is when I had the y axis 725mm working area now I have change and the x it the 725mm but you can see the machine and get the idea.
Cool machine! Your design?
If you’re not actually cutting, does the machine “cut” the correct depth?
Assuming Nema 17s for the motors? Make sure that Z axis is moving pretty easily.
Yes very good i like it so much. No is not i have find it to thingiverse. Yes they are Nema17. I think is software side not mechanical because when i jog the mm are correct and i can go all the way down, if i had mechanical problem i think i will have discover it by now. As you see in the photo in Easel i have make the hole to go all the way down, when i start the processes it say approximate 1 min to finish isn’t that to quick for 10mm radius hole and 19mm depth?
How are you setting zero?
The reason I asked you to run the test with no stock is to test whether the machine is just having trouble overcoming the forces of plunging?
What spindle?
What endmill?
Got a link?
Easel has no issues generating gcode to cut a hole. Are you using Easel to send the gcode as well?
If you want, I can look at the gcode…post it here.
I have fix it. I had to increase vref on steeper drive because it was too low and skipping steps, if i remember correcly is was 0,88 and i set it 1.05 and now i can cut the depth i set in Easel. tnx every one for the help.