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speeding up print time 2 or 3 times by wallsubdivide

Posted by artbody 
speeding up print time 2 or 3 times by wallsubdivide
January 26, 2017 06:20AM
Behaviour

since today each layer is the same hight. Printing a fine structured surface needs a lot of time
this is a new feature request

this idea will speeding up print time 2 or 3 times
if we print with layer hight i.e. 0,06 mm this needs a lot of time but gives a nice surface
so my idea was to print the wall zone with 0,06 mm 3 Layers in hight and i.e. 3 lines width and then print one Layer with 0,18mm
ooo ------------------------- ooo
ooo ||||||||||||||||||||||||| ooo
ooo ------------------------- ooo
o = 0,06mm
| = 0,18mm

wallsubdivide by 2x2 3x3 up to 6x6



i'm building a printer (based on Prusa i3) with 90cm x 90cm x 40cm printing area.
so in this dimension such a feature will increase printing speed dramatically


Thanks and - make it - do it
Reprap Prusa i3 3D Printer

Samsung 245B 1920x1200 GeForce GT710
4.4.26-gentoo #1 SMP Fri Dec 16 20:40:58 CET 2016 x86_64 AMD Fhot smileytm)-8350 Eight-Core Processor AuthenticAMD GNU/Linux

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Re: speeding up print time 2 or 3 times by wallsubdivide
January 26, 2017 06:27AM
Do no reinvent the wheel : It has been done for quite some time, it was called the "skin" module in skeinforge for instance, and I believe all the serious slicers do it too, maybe under a different name.


Most of my technical comments should be correct, but is THIS one ?
Anyway, as a rule of thumb, always double check what people write.
Re: speeding up print time 2 or 3 times by wallsubdivide
January 26, 2017 08:29PM
Slic3r calls it "Combine infill every * layers."
Re: speeding up print time 2 or 3 times by wallsubdivide
January 27, 2017 04:36AM
As others have said, Slic3r already does this. However you won't get good results if the infill height is greater than the nozzle diameter, so ensure that your layer height multiplied by number of layers between infill does not exceed your nozzle diameter.

Dave
Re: speeding up print time 2 or 3 times by wallsubdivide
January 27, 2017 05:16AM
Another way of smoothing the surface is to print in ABS and use Acetone to polish the surface.
Re: speeding up print time 2 or 3 times by wallsubdivide
January 27, 2017 11:00AM
Quote
IMBoring25
Slic3r calls it "Combine infill every * layers."

Thanks this was the feature i've searched for.
Re: speeding up print time 2 or 3 times by wallsubdivide
January 27, 2017 11:17AM
Rather than using Acetone to polish the surface, coat printed item with XTC-3D. Easy to use and you don't use much. Gives a really great finish.
A number of companies sell it around the world.

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Edited 1 time(s). Last edit at 01/27/2017 11:21AM by RepRot.
Re: speeding up print time 2 or 3 times by wallsubdivide
February 13, 2017 02:11PM
Quote
dmould
As others have said, Slic3r already does this. However you won't get good results if the infill height is greater than the nozzle diameter, so ensure that your layer height multiplied by number of layers between infill does not exceed your nozzle diameter.

Dave

So does Slic3r re-adjust the thickness of the in-fill to try to compensate for the skipped infill layers or does it just skip the infill for the set amount of layers? I have not used this feature but I would like to understand its capabilities better.
Re: speeding up print time 2 or 3 times by wallsubdivide
February 14, 2017 04:08AM
Quote
doodady
So does Slic3r re-adjust the thickness of the in-fill to try to compensate for the skipped infill layers or does it just skip the infill for the set amount of layers? I have not used this feature but I would like to understand its capabilities better.

Yes, Slic3r calculates the correct extrusion rate to fill the missing layers.

Dave
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