I’ve attached a picture that has 5 attempts to print a simple 1x1x1" hollow cube for calibration purposes. However, as you’ll see from the image, the extruder seems to be pushing PLA material that’s been extruded, which to me suggests that the extruder is not being moved up enough on the z-axis for a given layer. This seems to start out fairly early in the printing process and progressively gets worse as the height increases, as seen from left-to-right in the attached picture. This is occurring both on infill passes as well as perimeter passes.
I’m using the recommended slicer settings explained on this site, https://www.v1engineering.com/import-extruder. I have also tried placing the nozzle at different starting heights ranging from touching my heatbed to approximately 2 sheets of printer paper off of the bed, but it does not appear to make a difference. It may (or may not) also be worth noting that this behavior also occurs when I try to print the test part in the above URL
Clearly, something is off but I’ve run out of potential things to investigate. I would appreciate any suggestions on what might be causing the nozzle to hang too low.
Are you using 1.75 mm filament? What brand and what temp? What is the difference in all those squares different start heights? Try something larger, and let it get much higher. if you are having start height issues they will go away a few mm up by themselves.
Do you have any other experience 3D printing? 3D printing is very difficult at first despite what some companies would have you think. There is even a video of the printrbot ceo saying exactly this. I/we can get you printing but please have patience. There are many many details to go over.
I’m not sure what the 2 sheet of paper thing is we start from contact, for us zero is zero no goofy offsets.
A picture of you full machine is the picture I am looking for. in this case of your extruder setup would be nice as well.
a) using 1.75 filament made by Hatchbox
b) I’m a complete newbie RE: 3d printing. This post isn’t meant to be a complaint as much as it is seeking for guidance on how to troubleshoot. I’m assuming this is all part of the tuning and calibration process, but not having done this before, I’m not sure on how best to troubleshoot.
c) pictures of extruder, general setup and failed test piece attached. Also included a picture to illustrate the approximate starting height of z-axis. If =
d) Tried printing your test file, but only made it to layer 21 before piece popped off of heated bed, which as set to 50 degrees C. I noticed the issue less, but it is still occurring, as seen on the corners of the 21-layer piece.
ATM x,y and z steppers are using DRV8825 drivers. Extruder driver in use currently A4988, but have some more DRV825 otw. All drivers have been confirmed to be running at .6V. All 3 jumpers under all 3 steppers and extruder drivers are connected.
