I just printed the crown test with a sharpie. I noticed a couple spots where the marker seems to be a little off, but I’m not sure if that’s because the marker is moving a little bit because the pen holder is somewhat flimsy, or if I need to calibrate more. What do you think? I printed the crown twice and the results were exactly the same.
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Lets see the pen mounted up.
Dang. Too late. I already took the pen off. I’ll put it back on later tonight and run another print.
I’m going to follow this.
I did four overwrites on my crown and they all laid out exactly the same – looked to be one single width but REALLY dark line. That was impressive.
However, the pen didn’t close precisely the loops that it started. I saw someone else’s drawing that had the exact same misalignments here in precisely the same way, so I decided not to worry about it for the moment.
My middle section is still slightly out of square X/Y wise (17"x27" rectangle diagonals are off by about 5/16ths) and I haven’t aligned the Z beyond just getting it assembled. The FAQ and recommendations here were to just run the thing for a bit – and I’ve been learning about how to do that.
Yeah, something is definitely not right. Here’s a video of the entire print…
https://photos.app.goo.gl/zRmziM9fB4V2736M8
Here’s the pen at origin…
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Here’s the final drawing…
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It looks crooked to me.
Try a ballpoint pen.
The only ball point pen I could find was kinda crappy, but something is definitely off with the drawing…
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How about a few more pictures of your build. All I could see in the last one was the tip of a pen.
You are using MY gcode correct?
Here’s the build…
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I built an enclosure, which isn’t quite finished, but I’m getting there…
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I was creating my own gcode with ESTLCAM, but I just printed another one with your gcode. It’s worse 
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The only issue I see is the feet/legs. 3D printed legs are kinda iffy but the feet do not look to be attached and if they are they are not on well enough. All starts with a solid foundation.
Surprisingly, those legs are solid. I printed them at 75% infill and they don’t budge at all, so I’m pretty confident that’s not the problem. Good call on securing the legs though. I pulled up some of the screws when I was building the enclosure and left a few of them out. But, after putting the screws back in the leg bases, it’s still printing a bit crooked. So, I decided to check the squareness of the build. Sure enough, I’m 1/2" off. I don’t know how I screwed that up because I measured for squareness at least 10 times before. But, it is what it is.
Now my question is… what’s the best way to re-square now that the whole thing is together? I removed all of the leg base screws and loosened the screws that tighten then corner pipes, but that doesn’t seem to do the trick. Do I need to mess with the gantry? That would totally suck because the enclosure really limits my access to it.
That should do it.
I think I figured it out! Turns out one of my stepper motors was bad. I replaced the motor and here’s the result…
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Winner?
Definitely much better
I upgraded from the crown the the Mona Lisa 
https://www.youtube.com/embed/X69RiUqtjlY
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Much better. I suggest cutting or drawing a 3" square or circle, and also a rectangle or square as large as your machine can make and see how far off they are in X, Y and diagional dimensions.
