I was using Slic3r in my first few weeks of printing - and finally

I was using Slic3r in my first few weeks of printing - and finally tried Cura. It opened my eyes to lots of things - but one print in particular perplexed me… Seems Cura didn’t like this simple model at all.

are you sure that you used same parameters in Cura as in Slic3r? (speed, infill, etc, etc). For me print time was quite the same on both. generally Cura generated better gcode (eg. for gears)

Btw, by looking at your printed badges you should increase the top thickness, so it adds another layer.

@Jonathan_Rochelle Cura can do just as good, but you need the settings to be good for your printer. It can take some time.
Looking at the pics, in cura the overlap of infill with border is not good: Basic->Infill->,->infil overlap %
Actually, in that dialog, do you have solid infill top/bottom on? It seems not as you can see the infill in the top layer, which should not happen

For both apps, check the gcode in the gcode viewer to see if top/bottom layers are good (cura, top right view mode-> Layers)

Overall, both prints are bad ones. Not sure your temp settings or flow rate settings are good.

@Filipe_Wiltgen ​ look this. You tested CURA of ultimaker?

Were you monitoring the prints? The reason i all is, I think the biggest difference between the two is that Cura doesn’t have a setting for the speed of the top layer and in this instance, Cura printed at standard speed, but slic3r slowed right down.

Yep, it looks as if the cura version isn’t extruding nearly as many shells for anything, which makes the print not happen. (This also suggests that you may have some rate/temp issues for your extruder.)

I use Slic3r, Cura and KISSlicer all with some regularity as I find they each have their strengths and weaknesses for different models. Usually I look at the G-code simulation and tweak the settings to help decide which one to use. I’ll probably suck it up and buy Simplify3D soon, but imagine I’ll still use the others at times.

@John_Davis I looked at the pics at Simplifiy3D. If I want prints like that, I fire up replicatorg and use my old wooden Replicator.
It is sad to say that all those ‘fast slicer’ produce less quality than replicatorg (actually skeinforge backend http://reprap.org/wiki/Skeinforge).
The difference is that slicing takes minutes, and print is slower.
As I keep quality prints for my replicator, I’m not sure yet if it is just better, or if I could find settings in Slic3r or Cura that produce the same quality on a prusa i3 or vertex printer.

I use CURA exclusively now. I just tried using Slic3r today again, it over extruded like crazy (even taking the filament diameter down to 1mm from the real 1.68). The bottom five layers are crushed, and the accelerate deceleration is nuts (even though I’ve adjusted those way down). I am using a Ramps board, and have posted about these problems before. I REALLY want to use slic3r, but I just can’t get it to work.

I stared with the experimental and moved to the “stable” version…results are the same.

Can you post the model or link to it? I am sure some of us can help you get the right cura settings.

it seems like a weak extrusion multiply, but i could be in wrong if you already checked it

@enhydra I did actually increase to 6 top layers… that seems like a lot, right?

@Marcelo it was the Lulzbot version of Cura

@Jonathan_Rochelle I did not know there was another version thank’s

@Jonathan_Rochelle Indeed, that’s a lot. I usually do 3 or 4 layers at 0.2mm

on my blog, someone suggested changing the extrusion “flow” (is that the extrusion multiplier?)… anyone have experience with that? I’ll give it a try to close those top layer gaps.

yes, flow is extrusion multiplier. Try to increase slightly (105%) if over 110% nothing change maybe is the extrusor “blind” or an incorrect number of step/mm of extrusor motor. In order to verify this: if you send “G1 E10” with the extrusor heated the filament go forward of 10mm? If not, you have to check the number of step/mm in the firmware. Keep me updated :wink: