Hi there, first trying with ABS, whats are those little protuberances on the printed surface? Is it normal? I don’t see them while using ABS, I have 230°C for filament and 98°C for bed (hard to increase more… )
This doesn’t look like it is enclosed?
no, no enclosure, I haven’t
+1 on no cooling for ABS. I think you could benefit from a nozzle cleaning and maybe a cold pull or two. My money is on something in/around/on the nozzle.
At 230 I think you are a bit on the hot side. Try dialing it down a bit. Look at the specs from your filament manufacturer and start near the middle of the temp range.
110C for the bed, it’s worth the wait. But it wouldn’t cause that surface.
I’ll guess over extrusion? Dial the extrusion down a bit. I had a month or so of that where I dropped my Wade extruder stepping from 750 to 600 and that helped.
I ran into the problem aswell, but with different materials. First off, how is your buildplate secured. I noticed that with my Ultimaker 2, the buildplate wobbles in the front because it is only attached in the back, and that sometimes causes this. Also looks like you have some adhesion problems, always check the extruder, and maybe go a little higher for the nozzle temperature if it is possible to make getting rid of any plastic waste inside the hotend easier. But I agree with the others, definitely try cleaning the hotend by just heating it up to 260°C (that’s what I do, depending on the material) and push it through a bit, look for good extrusion, and, if it works, I take it back out.
Abs: 240 hotend, 110 heatbed, no fan.
I’m having something similar with PET on a non heated bed just with the first layer. To me it looks like too much filament is squeezed out since the first layer is printed at a lower height to get it to stick to the bed. So it curls up behind the hotend. It’s usually smoothed out with the next layers, so I didn’t look more into it.