infill in small areas

hi all,
basically slic3r just works great for me, and I'm not sure wether this question is slic3r specific: while on larger areas of a part everything prints fine and makes very smooth surfaces, on smaller areas the infill keeps bulging upwards, so some layers later, the extruder nozzle rumbles over these areas and eventually gets stuck or the printer looses steps. i'm using slic3r 0.61-dev, printing ABS at 0.3 layer height, infill density 0.5 and 2 perimeters.
anybody has an idea of which setting to tweak ?

grtx

Perhaps you should turn down your Extrusion Multiplier in order to get less plastic?

my extrusion multiplier is at 1, and everything is great in larger parts.
but now i set the perimeter count to 1 and that somehow leveraged the problem...

grtx

re-ing myself:

Sound: I just looked at the gcode graphics and found that the smaller an area is, the earlier it tends do get full infill, as if it thinks its a solid surface. in the attach, the small areas at top and bottom already have full infill (without any reason) , while the one to the left has full infill in the next slice cause its getting smaller.
hm

grtx

I have always thought that was one of the best features of Slic3r (solid infill on small parts for stength). I would agree with sound that if they are coming out to full you need to adjust your extrusion multiplier or E steps per mm

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@42loop: "without any reason" is not true. That happens on purpose. A low density infill wouldn't work on small parts.
I still believe that you should turn down your extrusion multiplier.

sorry, you were all right. didnt realize this 'full infill in small areas' was a feature. also since i always printed with 50% infill only i didnt realize there was too much plastic being extruded - but as a beginner probably you always use too much, for example to make it stick to the bed.

thanx & grtx

You can safely use half of that. The printed parts on my machines were all done at 25% infill, for example. Non-structural parts usually don't even need 10%, because the infill there is really only used to support top layers.