Eliminating excessive tiny extrusions?

[U.S. Water Rockets]

I am printing a design that is very similar to the spiral vases that are often used for showing off a printer. However, the design has a number of very steep tapers vertically, and that I am noticing is that when the side of the body tapers sharply, the cross section of the body (the wall, or edge) is slightly thicker than the absolute thickness of the wall. This means that the printer attempts to print a loop for the inside face and outside face of the wall, and then does 1000 little infill extrusions to fill in the gap between the loops. So, I get this incredibly slow print time because the printer is working so hard to do infill in there. It also creates a lot of little short hairs due to stringing because of the tiny extrusions and constant repositioning of the nozzle.

I am currently using Kisslicer, but I am about to try Mattercontrol or Slic3r to see if they slice this more intelligently. Then I got to thinking, that maybe there is a common way to solve this issue.

What if I enable the "vase" mode and print like a spiral vase? What will it do when it has to fill in the wider cross sections?

Could this be as simple as increasing the number of "loops" in the wall to something that would always exceed the wall thickness?

Any tips on improving this situation would be great.

[Polygonhell]

It's hard to know exactly what the issue is without seeing the model and messing with the slicer.
Kiss will attempt to fill gaps narrower than the extrusion width with these short moves, I think the paid version exposes a variable that dictates which holes like this it will fill (I don't remember what it's called). Other slicers will deal with them differently, I think Slic3r used to skip anything less than 1 full extrusion width, and I have no idea what Cura currently does.
Spiral Vase is worth a shot, but if the overhangs are steep there is a good chance you'll just get a hole unless you have enough walls to cover the gap.

[U.S. Water Rockets]

It's hard to know exactly what the issue is without seeing the model and messing with the slicer.
Kiss will attempt to fill gaps narrower than the extrusion width with these short moves, I think the paid version exposes a variable that dictates which holes like this it will fill (I don't remember what it's called). Other slicers will deal with them differently, I think Slic3r used to skip anything less than 1 full extrusion width, and I have no idea what Cura currently does.
Spiral Vase is worth a shot, but if the overhangs are steep there is a good chance you'll just get a hole unless you have enough walls to cover the gap.

I got tired of waiting for the thing to print up to the point where it fails, so I made a test part that's just a 3" diameter hollow dome with a 45 degree taper on the sides and 0.75mm thick walls. At about 1" off the build plate, the sliced wall cross section is big enough to start making this a real nasty issue. Oh yeah. I am using a 0.35mm nozzle, and 100% infill.

I think that I will try different slicers because it seems to me the thing should be smart enough to do a zig-zag pattern to fill in the gaps between the loops, instead of doing one tiny segment, jumping across to the wall on the other side and doing another tiny segment then jumping back to the first side to do another segment. It must be a sliver setting of some kind.

Thanks for the info on the paid version of Kiss. If it has extra features then I will look at it, because I really like this slicer.

[Polygonhell]

The extra features are minimal, I think they are plating of multiple parts, and editing the two variables on the advanced tab, one controls the oversampling level he uses for rasterizing the layer before extracting the tool paths and the other I believe controls how to fill little holes.
I paid for it, because I use it, I rarely touch the advanced settings.
From your reply I assume you're model has 2 walls a small distance apart, and is "hollow". Your much better off modeling things like this as a solid and setting the wall thickness/lack of top in the slicer. You'll run into issues with all the slicers dealing with thin walled features, there just aren't any good ways to deal with the general case.

[U.S. Water Rockets]

FYI,

I was able to get the print to come out like I expected using only Mattercontrol and the SeeMeCNC default profiles. I adjusted the temps to match the PLA I was using and printed a flawless specimen last night. I had a good feeling about the print because I could more easily see the tool paths and what the slicer was going to do with the mattercontrol user interface.

I might play around with the spiral vase settings a bit and see if I can't get rid of some of the tool moves, since it looks like the print is two loops thick the whole way. I'm curious to know what the setting would do in this situation.

Thanks for the input!