Supporting > Casting

What Fillament, wall thickness and fill percentage for Patterns?

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Jasonb:
Thanks

PLA was being used and I think the PETG should be stronger.

Also fill was likely to have been on the low side, I've not heard back what settings were being used but do have this image and would say that is 10% or less

AOG:
PLA is actually stronger than most PETGs. It is also significantly more brittle. Of all the common filaments in use, it’s the easiest to get good reliable prints with. Looking at the picture, it looks like a single or at most double shell thickness . You can tell by comparing the thickness of the infill which are single extrusion to the width of the outer shell. As a minimum I would up the shell thickness to 7 with 10 being best.

Tony

Jasonb:
Thanks, I'll pass the info on and hopefully some stronger patterns can be made.

crueby:
Checked the tables for the materials that Prusa shows, and it says PETG and PLA have similar tensile strngth but PETG has a higher impact resistance and higher temperature resistance. They use PETG for the printed parts in their printers. The PLA does finer detail better though, the PETG blurs a little and can be stringy across gaps. For the RC boat parts I've printed, the PLA was better for detail, as long as I gave it more perimeter wall layers to keep the strength up. The infill pattern can make a huge difference to the strength of walls, some patterns are more sparse around the edges even for same infil percentage.

ddmckee54:
I seem to recall that somebody on YouTube did a study on the strengths of the various infill patterns a while ago, CNCKitchen maybe?

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