I apologize if this is a rehash of previous conversations, but I couldn’t find anything for my particular issue quickly searching.
I had been running into jamming issues after running my A350 for a few months off and on, and replaced the hot end. It worked great, and I was able to get through a week long print without issue.
I changed to a spare bed, changed the layer height from 0.08 to 0.12, and have been trying to print the same model again (regenerating G code), but have failed three times now.
I’ve recalibrated the bed height, cleaned the drive gear chamber, made sure I don’t have dust on the spool, and cleared the jam each time. I always try loading filament several times before running again to make sure that the jam has been cleared.
I’m a bit stuck. I have another spare hot end, but it would be frustrating to only get a week’s worth of printing out of them before they fail.
I feel like the extruder isn’t able to keep up with a speed setting, but I don’t understand why simply moving from 0.08 to 0.12mm layer height would do that.
There’s a complex relationship there that isn’t really worth going into here. At a high level you could think of the initial height and extrusion rates (which is what the layer height ultimately is) being variables getting plugged into a y=mx+b type formula with different initial offsets and slopes where at some point the 2 setups will converge to failure at some final height.
Suffice to say, the important part is your first layer extrusion must look perfect for any well-defined results.
I mean, technically yes because it’s not working, but it’s not that abnormal. The instructions on setting the tension on the card are more of a guideline to get you started and then as you gain familiarity with the machine you’ll have to tweak up or down a bump to improve the first layer. This is common with all 3d printers. Some people need to bump down, looks like you need to bump up.
There’s even an on-the-fly adjustment in the touchscreen when you start a print job if you notice the first layer looks too low you can bump it up by a tenth or 2. I’d probably start there rather than recalibrating everytime. It gets saved and will persist through power cycles.
