How i can solve this?
I have a tevo tornado with tmc2208 in xyz and lv8729 in E with a mks gen l…
This looks like print-head wobble to me. My first response would be to make sure that everything is tightened down properly.
yes, everything is adjusted …
That looks normal for most printers. Nothing comes out perfect
Normal… no… something cause it
It could be slight heat creep causing the z-axis build height to be offset as it gets higher. Find a thin layer test box on thingyverse and try it. If you get the same patterns, then perhaps the object itself can’t support the weight of the heated filament and is moving under the load. You then need to change the object being printed so it has more / better support.
What I see is wobble on the Z axis, try using flexible couplings or proper leadscrews
What’s the layer height?
You have a couple of things going on there. I’ve seen cyclic under/over-compression before, but never on an alternating layer cycle like that.
The larger-scale inconsistencies look like spool tension to me. That happens when the filament between the extruder and the spool goes taut, and the printer’s structure is loose/flexible enough that it pulls the nozzle slightly out of place before the spool starts moving and the filament goes slack, letting the nozzle drop back to its normal position. Bowden extruders don’t usually have this problem, and non-bowden printers can solve it by feeding the filament through a “reverse bowden” tube mounted to a fixed point near the spool.
x + x = 2x
Tevo Tornado should be a bowden machine, unless you’ve been modding it. Another place that could happen is with helical Z couplers (which are essentially springs), especially if your Z axis runs on over-tightened V wheels. Cheap tube couplers are better.
Ah. Now that you mention it, the larger errors do appear to line up with the areas of the letters that will produce top/bottom layers, which don’t exist in your “simple cube”. It probably has something to do with the extra travel that it’s doing (or possibly retraction, depending on whether your slicer is configured to retract for such things), or it might be resulting from speed changes (and resulting pressure changes) due to your cooling settings.
This may be a long shot, but if you have a video camera, film the areas close up where the inconsistencies are happening and watch it back in slow motion, see if its the printhead or printed object that is moving. Are the lines parallel to the Y axis carriage movement? Have you tried to reduce the thickness of each layer, as that might stiffen it up.
infil fasthoneycom
z velocidad 5mm/s
z jerk 0.2
e jerk 4
2
infil grid
z velocidad 5mm/s
z jerk 0.4
e jerk 5
3
infil grid
z velocidad 5mm/s
z jerk 0.4
e jerk 5
with fasthoneycom infill i get better results…
if i print a simple cube(without letters) like the image before it, the result is perfect, the problem is in the sites that makes retraction where the letters are, but if i print without retraction result is like 2 and 3…
Do the letters have to be so deeply inserted? Looks like the slicer program is having difficulty getting the crispness out of the letters corners.
A combination of print speed, printer head direction changes, and lack of internal support in the printed object to handle the first two.
I had this on parts, turned out to be stiction in the motion. Got things moving smoother and it went away.