Hello everyone,
I am new on the CNC and i have tried a few times to cut out a design i created on VCarvePro. When i put m g-code into gsender everythiing seems fine but when i start the project, it seems to go wrong part way into it. letters are overlapping, is it a problem with my g-code or something im doing wrong in gsender?
Hey KEvin,
Maybe look at the post processor you have selected in Vcarve.
I have no idea what a wrong config does. I just found my settings somewhere, prolly on sienci page. But they work. IT seems you can go wrong big time with the wrong one.
Part way in is weird though. Maybe your machine (wich do you have) is stalling, skipping steps or grinding. Did you just put your machine together. Here’s the trouble shoot info.
Welcome to the group Kevin.
If it’s a LongMill or similar machine there are a couple of things I would check.
If the coupling from a motor to the lead screw is slipping this can lead to overlapped text because it slips at some point instead of moving and then everything after the slip is off. Also an overly tight anti-backlash block can cause this by causing the machine to bind and miss steps with the stepper motor. Again causing the machine to not be where it ‘thinks’ it is.
I would check those those things and if you still have trouble post some info about your machine type and if you could drag a photo of the carve into the post that wouldn’t hurt.
@k.boots Welcome to the group, Kevin. I have moved your topic to the Machine Help category. Without more information, there is no evidence to support this as being a gSender issue.
As @Spamming_Eddie and @_Michael have said, more information will help members to advise you on how to address this. Specifically:
This is my very first CNC machine and first time using. I am running a long mill mk2. I have Vcarve pro and gsender. Not sure what version of gsender i have to be honest. Here is a picture to explain what I mean
@k.boots Again, Kevin, what post processor are you using in Vcarve to create the gcode?
To find the version of gSender you are running, click on the gear in the upper right hand corner, then choose “about”. That will tell you the version number.
With respect, the picture shows nothing as we don’t know what it is supposed to look like.
Posting your .crv file may be a good start.
Hey KEvin,
Assuming the machine started all the way to the left it looks like it slipped, stalled or stuck the x-axis on the way back to the left and thus started the next pass with an offset to the right.
That feels like a mechanical problem in your machine. Motor coupler and anti backlash nut, V-wheels. IT can be that you are running the machine at too high a speed. Microstepping and overal speed are the things to play around with.
Since the problem only seems to happen once you might also want to look into how the x-axic gantry moves over the beam.
You can find pretty much all you need to know on this page:
For some reason new users can only upload one image. Anyways, for Gsender I have the 1.4.9 version, my post processor is Grbl (inch)(*.gcode). Here is what the project is supposed to look like. Thanks for the help!
I can assure you there is nothing mechanically wrong with the machine, everything moves as it should with no grinding or screeching sound. I have a feeling it is the way im saving my gcode or the way I am creating my vectors. Thanks for the help!
Does the code look good when you review it on something like ncviewer.com?
Do the toolpaths look good in the gsender preview?
Do you have the correct machine size selected in gsender?
Good luck! I know this is frustrating.
@k.boots Tks, Kevin. Knowing what it supposed to look like helps.
I would try this. Set everything up, but set your Z0 a couple of inches above the top of the material. Run the project in air. As soon as you see that it is off, stop the job and hit return to XY0. Determine if it returned to where it should have. If it does, run it again, setting Z0 properly. Run it in scrap. Again, as soon as you see it go wrong, stop the job. Return to XY0. I suspect that it will be off.
If it is off when carving, but not when running in air, it is definitely a mechanical issue. If it is off in air, it is also a mechanical issue. If it is not off when running in air, but is off when carving, it is a mechanical issue.
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