what is that software doing here?? it creates an outline and then offsets suddenly
http://youtu.be/KauFeASAqfY
Slipping belt, pulley slipping on stepper motor, under or over current on the stepper driver also check the relevant axiz bearing for sticking but thats a little unlikely. i cant hear what the stepper motors sound like but if they run right it sounds in time almost like music is the best way i can describe it.
this has definitely happened to me, in both cases it was a slipping pulley. In one case the 3D printed pulley broke out it’s retaining scew. In the second case, the grub scew just came loose in a machined pulley.
Reduce your acceleration setting for the Y axis (the bed) in your firmware.
i changed the slicer to slic3r… it moving very slow…to the wrong position. in the video, you can see the square in the bottom (towards the viewer), is perfectly placed after fast movement. ???
It’s putting a ring around the part to allow a little extra time for the extruder to be extruding consistently
Dear @GoodCodeWriter_Edgar , you are building a disaster. A 3d-printer is supposed to be a very well built, very well fine tuned piece of equipment, that only works when it is properly built and cared for. Any, and I mean any slip-up, and it is not going to work. Don’t give the software the blame, or the slicer, but give your machine a good look. Now, is that what a precision instrument looks like?You can’t cut corners, you have to be sure everything is thight, everything trammed, all moving parts running smooth, and all not moving parts as tight as if you were expecting an earthquake. Then, and only then, you can have a sliver of hope thaat you can print something you can be proud of.
Take a look at these pages: http://reprap.org/wiki/Calibration
and this one:
http://reprap.org/wiki/Triffid_Hunter’s_Calibration_Guide
Especially Trifid Hunter’s calibration guide is very helpful.
I’ve built and designed my own printer, and it took me a year to get things right. That doesn’t mean its finished. Far from it. It took me about 6 months to build the first version, and another 6 to get it right, because I thought everyone was a bit crazy, and I could do much better, and boy, did I pay for that arrogance. I learned the hard way that most things other people found out, applies to my machine too.
And I’m still learning. Come on, you can do better, can’t you? Be patient, persistent and accurate, and you will get there. Keep going as you are doing now, and you will end up with a nice piece of sh*t.