Yesterday I started cutting a project but it was going to take to long so I stopped the program during a bit change in a advance vcarve tooth path. More precisely after the pocket cut was finished and CM asked for the vbit. Today after checking all my Zs making sure they were all the same, i started the advance vcarve but with the vbit toothpath first. All was good until about 20 minutes into the cut when the CNC started cutting outside of its path, offsetting its self outside its set path. It ruined the project, and i have absolutely no clue why this could have happened. If you look at the picture, on top you’ll see the number 100, thats where the cut started going left, which was fine until it started coming back the other direction, getting more and more off the path as it went. Does anyone have any idea why this would happen i the middle of a cut?
Lost steps.
Possible causes:
- insufficient belt tension
- loose pulley set screw
- maladjusted eccentric nut for Delrin V wheel
- lack of lubrication on linear block/rail
- feeds and speeds not correct for material
- machine jostled when changing tools
- lost steps due to mechanical interference (hit a clamp or a wire or hose got in the way or exceeded travel limits (that last should be checked for by Carbide Motion)
- lost step due to wiring fault (check all wiring)
- homing procedure not accurate due to loose switch
Which machine do you have?
Post an overall photo of your machine?
How did “Hello World” work out? Where you successful at the follow-on lessons for Contour, Pocket, and V-Carve?
Ive had the s5 for about a year now and never had any issues like this. The only thing i can think of is that i heard a pop during the cut but I checked everything and everything seemed to be running just as they were. Checking all the ball screws and lubrication, i found no faults.
My feed rate was 40 for the outermost numbers since they are .75inch tall. I was using a 30° Vbit and it didnt have a scratch on it. In the picture, im re-surfacing my wasteboard, i haven’t ran into any issues yet and im going on 20 minutes. Feed is 120.
I havent ran the hello world since i got the machine, but when i did it turned out great.
Lol pretending homing is accurate when the switch isn’t loose. The homing is bad regardless and that statement is misleading. C3D acknowledges you should always reprobe after re-homing shutdown or power outage. It’s the nature of a cheaper 8 bit controller running at 16mhz with hall effect sensors…
Also lol you did the same thing I did and ran all the wires through the one drag chain. The other now houses my air blast setup
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