I have a Anet A8, with Bowden E3D v6.
Using Simplify 3D right now, have also tried Cura 2.3.1 with same results.
Trying to print my RC plans for Cessna 152 that I bought
I´m printing at 225c and with 30mm/s.
Using PLA - Transparent
I have a consistent problem with my prints.
I have followed the instruction videos and slicer settings accordingly.
My problem is that I get errors in my prints on layers that starts around 130 mm and above.
All layers below are perfectly fine!
I noticed that the hotend doesn´t follow the layer all the way around, instead it starts to jump from place to place and
extrudes a small “dot” every time it stops with a couple of millimeter in between. It can do so for 1-3 layers then it prints fine again
for several layers. And then all of a sudden it starts to jump again.
225 seems a little hot for pla first of all. if pla doesn’t extrude right at 190-200 there probably is a problem with your nozzle getting clogged. try lowering your temps.
about the machine lag though… this can be caused by a number of things. I suspect the sd card that comes with the printer is cheap and low quality, I suspect it for ruining a couple of my early prints. if you use the sd card to print, try printing over usb using your computer. if you have been printing over usb, the problem could be a faulty usb cable. I notice the print stops and jumps when my pc is lagging but doesn’t skip instructions which indicates you may have a communication problem.
somewhere there is a communication error, try swapping your printing method (USB <–> SD). if you have been printing over usb, try enabling TCP steaming mode. If usb printing is unavailable to you, I suspect a higher quality sd card may be a solution for you.
Looks like the shell thickness is thinner than your extrusion width. Different slicers will handle this differently (like extruding dots instead of a line) but getting it right usually means manual adjustments. I use slic3r because it gives me the most freedom and control. I would need to see the design or gcode to give any more advice.
I did a test this morning and increased the temp to 230 and the error started just after a couple of layers.
So tomorrow i will lower the temp and give it another go.
I usual print at 195-200 with other models but since this is a thin airplane fuselage and the instructions (recommendations) from the guys at 3dLabPrint said 230 I insisted on trying at 225.
Let´s just hope that the layer will adhere properly at around 200.
Usually I print through USB, and actually now that you mention it, I have not had a problem with that. Started to try out SD-card recently, and I do use a better quality card.
I will go back and try with USB again, thanks for the tips!
yep! As a answered in an earlier reply I tried to increase the temp as a experiment and it got worse. i will try to lower it tomorrow, I´m just afraid that the layers won´t bond properly at around 210.
Your cables might be strechted at this height. Make sure all your connectors are tight.
Extrusion motor could be overheated after a certain time resulting in it shutting down for small periods to cool itself.
Your Z axes might have problems. Make sure they are clean. There can’t be left over burrs or dust in the thread of the Z axes.
Make sure both your Z axes are parallel. Make sure both your Z axes are straight (no bends!).
These are just some possible causes from the top of my head. There could be many more. It looks very unusual to me though. I would try making a print with a similar height.
