[ADDED] More options for stronger infill.

[MichaelHerron]

Haven't tried it, but there may be a workaround for the problems of rectilinear infill:

You can specify the angle of infil. currently it alternates between 45 and -45 by default.

Specifying a number of layers that are the same angle would help. For only a single axis, specifying only one angle would also help greatly. Overlapping perpendicular infill layers is definitely a very weak option.

I'm going to try the following:

45,45,45,45,45,-45,-45,-45,-45,-45

This will at least give me 5-layer continuous slats. It means more bridging for the outer layers, but its all I got for suggestions for the current software...

Please S3D: Give us more infill options!

[KC_703]

Acccording to the report cited in this article, we have the best option for strong infill...
http://3dprintingindustry.com/2015/03/1 ... -printing/

Full report:
http://my3dmatter.com/influence-infill- ... t-pattern/

[BaudR8]

Acccording to the report cited in this article, we have the best option for strong infill...
http://3dprintingindustry.com/2015/03/1 ... -printing/

Full report:
http://my3dmatter.com/influence-infill- ... t-pattern/

Very interesting reads... I've personally never had any issues with rectilinear strength, except on one of my printers, where the infill travel speed was too fast for my extrusion, but with the infill extrusion width feature, it dramatically improved the printer that was having problems as well as the ones that were printing perfectly.

[MFitz73]

Acccording to the report cited in this article, we have the best option for strong infill...
http://3dprintingindustry.com/2015/03/1 ... -printing/

Full report:
http://my3dmatter.com/influence-infill- ... t-pattern/

then there must be something wrong with the implementation. no matter what I do, I can only reduce the amount of spongy-ness that
s3d infill produces. every slicer I use is strong infill than s3d.

[jimc]

im on the same page as baudr8. i have no problems with any kind of spongy infill. my parts are always very strong. most of the parts i am printing are actual pieces for automated industrial assembly line type equipment. the strength has to be there. the company i print the parts for also has a stratasys dimension and my parts come out just as strong as theirs on that machine. i am just getting the feeling that alot of the infill issues are just extruder based. maybe some hot ends or extruders just dont like the way its handled by s3d no matter how you have it set. i donk know really but even printed every other layer like s3d does it, if the setting are right you should come out with a really nice strong infill that takes 1/2 the time to print as others. now if the hot end can handle that...ehhh who knows. i am running a direct drive e3d.

[KC_703]

I'm of the camp to increase outer shells and top/bottom to strengthen the part, with the infill for support of top layers. 2mm seems to be the sweet spot for the filament I'm using (eSUN ABS). Divide by the layer height or extrusion width to get the propoer number of shells and layers.

[S3D-Jason]

Many new infill options were added in version 3.0. You can use patterns like grid, honeycomb, triangular infill, etc. You can even print multiple infill angles on the same layer for extra strength.

See the Infill tab for the new options