Alternating perimeter layers (hexagonal walls)

[espr14]

Left side of image is standard layering (cut in x-z plane). Right one is newly proposed one. Outside wall/shell/perimeter (first column from the right) keeps the same layers but even columns are shifted by half of layer in z dimension. Each string is touching others in 6 spots (hexagon) instead of 4 in the standard one. This will provide higher strength of the printed piece. Can you add this to the slic3r? Thanks.

[mdealer]

I would suggest to to move the alternating perimeter inwards by one to improve external appearance.

[espr14]

Only even columns will be modified.

[Mirarkitty]

I had basically the same idea (#5767, doh). This should work very well for z-axis adhesion.

[mvadu]

to be frank in a well leveled, well working printer, the extruded filament should get little squished (so cross section will be more elliptical than circular) thus touching more than 4 small points like your left image. But I agree having an interleaving on z should at least in theory have a better layer adhesion. More of CNCKitchen's Stephan to test it out once Prusa slicer implements it.

Edit Feb 2024 - Stephan did test this and found it to be 10-14% stronger layer adhesion.

[Mirarkitty]

Just had a layer separate, looking forward to this...

[Plutoaurus]

Here after watching cnc kitchen.
Thus looks to improve layer adhesion quite a bit.
+1 request

[dicksondickson]

Also here after watching CNC Kitchen.

[Ascendzor]

I have tried to research this to make my prints more watertight.
+1 this request. Would help me greatly

[Comprehensive-Jason]

Here's the relevant CNC Kitchen video: https://youtu.be/5hGm6cubFVs

This technique seems to improve print strength quite significantly with no serious downsides, so would be a great addition!

[SaltyPaws]

+1. To this request after seeing Stefan's test results!

[Mirarkitty]

Nice Stefan. Hopefully this will get some traction now!

[migueldiaslima]

Hoping this gets implemented on prusaslicer!

[Ro3Deee]

someone patented the idea on 26.11.2019 (provisional application), after this issue was submited on github...
https://patents.google.com/patent/US11813789B2/en?oq=11813789