Re: Drivers 1.7.5 RC2 with Slic3r Prusa Edition (Updated 18 Nov)
Using final 1.7.5 can anyone create gcode for the large fractal pyramid (vase mode) here:
http://www.thingiverse.com/thing:1356547
+1
Re: Drivers 1.7.5 RC2 with Slic3r Prusa Edition (Updated 18 Nov)
> > I am going 45 minutes slicing on this and I am on a very powerful computer. This is unusable. S3D sliced this in about 2 minutes.
> http://www.thingiverse.com/thing:1356547
>
> The fractal pyramid is a one of a hell complex object. Indeed, the fractals have an infinite complexity by definition. This model and the various chain
> fabrics are a benchmark for slicer optimization, but they are not what the most people print. It is true, that Slic3r has not been optimized for such
> models and it is on my list.
Slic3r is based on the Clipper library for the manipulation with 3D polygons:
http://www.angusj.com/delphi/clipper.php
I have found out, that the library hates complex precisely overlapping polygons. On this particular pyramid, it could easily take 20 minutes to process a single slice, if the stars are aligned properly. After studying the Clipper library for couple of days, I applied a workaround, which took the slicing of this complex object down from eternity to 7 minutes on my quite powerful laptop. Stay tuned.
Re: Drivers 1.7.5 RC2 with Slic3r Prusa Edition (Updated 18 Nov)
> After studying the Clipper library for couple of days, I applied a workaround, which took the slicing of this complex object down from eternity to 7 minutes on my quite powerful laptop. Stay tuned.
Couple of more fine touches and the time dropped from 7 to 5 minutes, that is at 50 micron layer height.
Re: Drivers 1.7.5 RC2 with Slic3r Prusa Edition (Updated 18 Nov)
Sounds great!! I'll give it a try this evening on my machine. I'm running dual 8 core Intel Xeon's with 128Gigs of memory and SSD drives to chunk on it with!
Sounds like a good test!
Re: Drivers 1.7.5 RC2 with Slic3r Prusa Edition (Updated 18 Nov)
> > After studying the Clipper library for couple of days, I applied a workaround, which took the slicing of this complex object down from eternity to 7 minutes on my quite powerful laptop. Stay tuned.
>
> Couple of more fine touches and the time dropped from 7 to 5 minutes, that is at 50 micron layer height.
Added some parallelization, fixed some bottlenecks. Now at 2:43 and still falling.
Re: Drivers 1.7.5 RC2 with Slic3r Prusa Edition (Updated 18 Nov)
Tried slicing a fractal pyramid in vase mode and it errors out with a divide by zero (I think was the error).
I also found if you don't use vase mode it slices it incorrectly compared to what you get from S3D. Basically it adds bottom layers that shouldn't be there.