Hi, I'm still new to printing with ABS and have problems with the infill (picture attached) and even bridges. It seems that the first infill layer doesn't adhere good enough to the layer below. This creates small gaps and the next infill layer does not build up as it should, because of the gap below and the bad bridging behavior. Can someone help? https://reprap.org/forum/read.php?262,761312,761312#msg-761312 Fri, 13 Mar 2026 21:51:44 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?262,761312,771067#msg-771067 https://reprap.org/forum/read.php?262,761312,771067#msg-771067 www.thingiverse.com]]]> Inhumierer Printing Wed, 31 May 2017 03:54:10 -0400 https://reprap.org/forum/read.php?262,761312,770746#msg-770746 https://reprap.org/forum/read.php?262,761312,770746#msg-770746
I attached a new version with 0.6 mm width, maybe this one works with your settings.]]> h4nc Printing Mon, 29 May 2017 02:35:59 -0400 https://reprap.org/forum/read.php?262,761312,770677#msg-770677 https://reprap.org/forum/read.php?262,761312,770677#msg-770677 Inhumierer Printing Sun, 28 May 2017 13:32:25 -0400 https://reprap.org/forum/read.php?262,761312,770272#msg-770272 https://reprap.org/forum/read.php?262,761312,770272#msg-770272 And to your bridging: from my experience, Cura is better for making holes and similar, but bridging is better when sliced with Sl1c3r. So I don't think you'll get a successful Cura sliced sundial print.]]> Inhumierer Printing Fri, 26 May 2017 06:06:50 -0400 https://reprap.org/forum/read.php?262,761312,770080#msg-770080 https://reprap.org/forum/read.php?262,761312,770080#msg-770080
I designed a bridgetest that should show if its possible to print the sun dial. (it is not an important part that i need, but now it's a challenge ;-) )

I attached this bridgetest file. Maybe you can test if you are able to print it.
I printed a lot of them with several differnt settings and even two different abs spools. Some results are better, but never "perfect".

I had better results with 0.2 layer height, about 210°C, 0,5mm nozzle (ext. perimeter 0,5, others automatic).

The sun dial should be printed with 0.1 layer height.
So I also tested 0.1 with no good results.

The bridges in the testfile are 0.2 mm high. So should be two layers for 0.1 layer height.]]> h4nc Printing Thu, 25 May 2017 04:20:47 -0400 https://reprap.org/forum/read.php?262,761312,769705#msg-769705 https://reprap.org/forum/read.php?262,761312,769705#msg-769705 At the bottom layer you can't tell if it is over extrusion or a bed distance issue. My first layer sometimes look similar, probably depending on the room temperature, the moon phase, the cat's mood and other strange things. Try to lift your head by maybe 0.02 or 0.04mm. I think it's hard to find a good compromise between the first layer beeing squashed and first layer adhesion. If you are 0.01mm too low, it gets squashed, and if you're 0.01mm too high, small structures loose bed contact while printing 1st layer.]]> Inhumierer Printing Tue, 23 May 2017 03:55:45 -0400 https://reprap.org/forum/read.php?262,761312,769566#msg-769566 https://reprap.org/forum/read.php?262,761312,769566#msg-769566
There is still a problem with details. In the picture attached you can see that there are small gaps between the detail perimeters and the infill. How can I avoid this?

Also I'm trying to print the sun dial again. I attached another picture showing the first layer. Is this overextrusion or should it be like that?]]> h4nc Printing Mon, 22 May 2017 11:05:41 -0400 https://reprap.org/forum/read.php?262,761312,768986#msg-768986 https://reprap.org/forum/read.php?262,761312,768986#msg-768986
I got good prints with my none auto setting (0.4 width with 0.4 nozzle) and I calibrated my printer with this settings. Calibration object was a thin walled cube (without top and bottom) with 0.4 wall thickness. Maybe this calibration process was my mistake.

Now even PLA prints don't turn out good. Perimeters have gaps and infill looks underextruded (see picture attached).

Right now I'm printing with automode and I expermiantally set the extrusion multiplier to 1,15. It seems that it gets better now.

But my concern now is that parts that should fit toghether will not fit after this change. As it was before the calibration.]]> h4nc Printing Fri, 19 May 2017 11:30:03 -0400 https://reprap.org/forum/read.php?262,761312,768930#msg-768930 https://reprap.org/forum/read.php?262,761312,768930#msg-768930 waitaki Printing Fri, 19 May 2017 07:52:46 -0400 https://reprap.org/forum/read.php?262,761312,768090#msg-768090 https://reprap.org/forum/read.php?262,761312,768090#msg-768090
I used 0.2mm layer height. I will try that.Thx!]]> h4nc Printing Mon, 15 May 2017 04:37:30 -0400 https://reprap.org/forum/read.php?262,761312,767477#msg-767477 https://reprap.org/forum/read.php?262,761312,767477#msg-767477
In Sl1c3r there are extra bridging settings. I played around with lots of them, and I can print good bridges up to app. 30 or 40mm. I increased the speed of the bridge strings and lowered my temp a little, and AFAIR I reduced extrusion during bridging to 95%. In Cura the bridges don't get very good, and in general I try to avoid bridges and overhangs > 50 degrees. Oh, and you won't get nice bridges if your layer height is very different to your nozzle diameter. With my 0.5mm nozzle I get good results with 0.3mm layer height, 0.2mm does not come out well. I didn't try 0.25mm or 0.4mm layer heigth, anyway.

To your photos: Just a feeling, it looks like you're printing too hot. And the digital sundial is probably a very difficult thing to print. What layer heigth did you use to print the nozzle holder? Maybe you can try 0.25mm, and 5 or 8 degrees colder?]]> Inhumierer Printing Fri, 12 May 2017 04:06:22 -0400 https://reprap.org/forum/read.php?262,761312,767330#msg-767330 https://reprap.org/forum/read.php?262,761312,767330#msg-767330
are you able so close wider infills (4mm holes) with one abs layer? I can't. And this influences the next layer. Four top layers in the picuteres attached.

And I think this is my (hopefully) last bigger problem with ABS.

The top layer cracks while printing and gets gaps and holes, because its not able to bridge between those small distances. I tried to reduce the hotend temperature, but that didn't help.

Thx]]> h4nc Printing Thu, 11 May 2017 10:25:29 -0400 https://reprap.org/forum/read.php?262,761312,766885#msg-766885 https://reprap.org/forum/read.php?262,761312,766885#msg-766885
The whole thing is about printing the populat sundial. So after all of your help I tried it again (with auto mode).

The infill looks much better now, but I still face problems with short bridging (see picture).

I looks like the extruded filament doesn't stick to the starting point.

But maybe it's underextrusion again, it could be that the automode uses 0.4 width for the thin lines. How low does the automode go? Or does it "know" that 0.4 is to less?]]> h4nc Printing Tue, 09 May 2017 09:15:38 -0400 https://reprap.org/forum/read.php?262,761312,766851#msg-766851 https://reprap.org/forum/read.php?262,761312,766851#msg-766851 On your picture the auto looks best, in my eyes. Maybe increase the infill overlap a bit, looks like a small gap on top and bottom. I remember Slicer 1.29 was said to have a bug when setting auto width, although I never had a problem with auto setting. 20% infill normaly says that 1cm^3 infill is made out of 0.2cm^3 plastic. If the infill "walls" get thicker when the extrusion width increases, the distances between the walls must increase, too. So the infill honeycombs get bigger. I'm glad that at least you get a pretty good infill right now. :-)

At the beginning I used Slicer, but I had some troubles with holes, especially small ones. In Slicer you can control a lot of things, way more than in Cura, but at least with my printer, holes are much better when the STL is made by Cura. In Slicer I used extrusion width a bit more than my nozzle, or auto, both worked good. In Cura I can set a nozzle diameter, but I can't set the extrusion width, AFAIR. To be honest, I don't care too much, as long as my parts look good. I have a leaky 0.5mm nozzle, and I have some small issues when material leaks out during travel moves, and I have some ghosting artefacts, but the overall extrusion works quite nice. I'll try a 0.3mm nozzle direct extruder, and a 0.4mm nozzle bowden type to reduce the weight of my Y carriage to get less ghosting, when I find some spare time.
I'd like to have a slicer setting to implement coasting, which slows down head movement and extrusion before travel moves to counter leaking, and something to slow down movement before perimeter edges to counter ghosting and ringing, but I fear I have to wait some time before this comes. 3D printing is learning every day...]]> Inhumierer Printing Tue, 09 May 2017 04:54:35 -0400 https://reprap.org/forum/read.php?262,761312,766747#msg-766747 https://reprap.org/forum/read.php?262,761312,766747#msg-766747
I played with the width settings. I tried 0.4, 0.44, 0.48 and automatic. All other settings stood the same. Honeycomb 20% infill. See picture attached.

The 0.48 and the automatic look good to me.

The question about what exactly the automatic mode does is still open to me. It says that it depends on the layer height. For me that is to less information to figure out how calculates the width.

Also it is interessting to see that the automatic honeycomb looks so different too the others. So the holes are bigger because it generates a bigger witdh, which means using more plastic. Right?


Edit: I recognized a gap between the perimeters and the infill for the automatic mode? Does someone know why there is a gap?]]> h4nc Printing Mon, 08 May 2017 14:14:51 -0400 https://reprap.org/forum/read.php?262,761312,766695#msg-766695 https://reprap.org/forum/read.php?262,761312,766695#msg-766695
Do you always set the width to a higher value (10 -20% higher?)

Do you use the autmatic mode? What does it do exactly?]]> h4nc Printing Mon, 08 May 2017 10:09:09 -0400 https://reprap.org/forum/read.php?262,761312,766692#msg-766692 https://reprap.org/forum/read.php?262,761312,766692#msg-766692 With my 0.5mm nozzle I usually sliced to 0.6mm extrusion width, and on the first layer 0.9mm when using Sl1c3r. Cura doesn't have such a setting, but from my eyes it looks similar, probably the lowest layer is even wider.
Too the infill: I don't think you need to adjust the flowrate. You should (maybe) increase the feedrate for the infill. Feed = speed, flowrate = how many plastic will come out. You can set the infill speed without touching the perimeter & travel speed. In Slicer mine is 80mm/s, in Cura 100mm/s.
If you're printing a 20mm test cube you will probably need no retract at all.]]> Inhumierer Printing Mon, 08 May 2017 09:53:09 -0400 https://reprap.org/forum/read.php?262,761312,766624#msg-766624 https://reprap.org/forum/read.php?262,761312,766624#msg-766624
I never understood why the standard setting in slicer for the different flow settings is set automatic. Why should the software be able to change the width while the hardware isn't able too?

I set all those values to 0.4 because one time I printed a thin wall calibration print (0.4 walls). In automatic mode the walls got much thicker. Settings them all to 0,4 helped. Also parts fitted much bettet after that.

Isn't changing those values to 0.48 the same as I set the extrusion multiplier to 1.2 (of course this would effect all)? This would mean that parts will get thicker, holes smaller etc.
Or so you mean that I should only change the infill flow rate?]]> h4nc Printing Mon, 08 May 2017 05:07:26 -0400 https://reprap.org/forum/read.php?262,761312,766381#msg-766381 https://reprap.org/forum/read.php?262,761312,766381#msg-766381 Inhumierer Printing Sun, 07 May 2017 03:55:06 -0400 https://reprap.org/forum/read.php?262,761312,766131#msg-766131 https://reprap.org/forum/read.php?262,761312,766131#msg-766131
As an aside I see you have the flow widths set to 0.4 = same as nozzle. You might want to increase this to nearer 0.48 to avoid under extrusion.]]> MCcarman Printing Fri, 05 May 2017 12:19:47 -0400 https://reprap.org/forum/read.php?262,761312,766088#msg-766088 https://reprap.org/forum/read.php?262,761312,766088#msg-766088 sry for my late reply.
Your cubes really look good. Thank you.

Maybe its a problem with the filament. But than this would also happen to the perimeters.

I printed a lot of pla parts the last days withour any problem. All came out perfect.

I actually use a chinese e3d clone. Again PLA perfect, but maybe there are some problems with ABS and this clone.

Thank you again!]]> h4nc Printing Fri, 05 May 2017 06:26:37 -0400 https://reprap.org/forum/read.php?262,761312,765875#msg-765875 https://reprap.org/forum/read.php?262,761312,765875#msg-765875 Inhumierer Printing Thu, 04 May 2017 05:39:00 -0400 https://reprap.org/forum/read.php?262,761312,765698#msg-765698 https://reprap.org/forum/read.php?262,761312,765698#msg-765698 Last resorts would be increasing the flowrate, and playing around with temp & speed.. Although I don't see any signs of under extrusion at your parts.
[attachment 93698 Infilltest.jpg]]]> Inhumierer Printing Wed, 03 May 2017 07:23:46 -0400 https://reprap.org/forum/read.php?262,761312,765033#msg-765033 https://reprap.org/forum/read.php?262,761312,765033#msg-765033 Inhumierer Printing Sun, 30 Apr 2017 02:18:29 -0400 https://reprap.org/forum/read.php?262,761312,764373#msg-764373 https://reprap.org/forum/read.php?262,761312,764373#msg-764373 h4nc Printing Wed, 26 Apr 2017 03:23:04 -0400 https://reprap.org/forum/read.php?262,761312,764015#msg-764015 https://reprap.org/forum/read.php?262,761312,764015#msg-764015 Inhumierer Printing Mon, 24 Apr 2017 03:43:19 -0400 https://reprap.org/forum/read.php?262,761312,763518#msg-763518 https://reprap.org/forum/read.php?262,761312,763518#msg-763518 h4nc Printing Fri, 21 Apr 2017 04:50:20 -0400 https://reprap.org/forum/read.php?262,761312,763496#msg-763496 https://reprap.org/forum/read.php?262,761312,763496#msg-763496 Inhumierer Printing Fri, 21 Apr 2017 02:07:40 -0400 https://reprap.org/forum/read.php?262,761312,763328#msg-763328 https://reprap.org/forum/read.php?262,761312,763328#msg-763328 h4nc Printing Thu, 20 Apr 2017 05:25:04 -0400 https://reprap.org/forum/read.php?262,761312,763315#msg-763315 https://reprap.org/forum/read.php?262,761312,763315#msg-763315 Inhumierer Printing Thu, 20 Apr 2017 04:16:13 -0400