I used 24% infill and 0.2mm layers. In IdeaMaker, 24% is the most infill that you can use and get infill to go in both directions on every layer. Once you go above 24% then the infill starts going in alternate directions on alternate layers, which isn't nearly as strong (incidently Cura behaves this way as well).

Thanks for the speedy reply.
I never knew that. So 50% doesnt do anything better than 24%? Or 100%?

For my drones, I try to print the mounts in 75% or 100% .. but if that isnt as strong as 24%, I'll change the way I do it.

Im printing one now. I've had 3 petg failures so far, one at 66% and two at 25%. All three times related to the filament getting stuck. Once it got stuck IN the supplied tube that runs from the N1 feeder to extruder, and twice the filament was bent when not using the tube.

I'm not sure if all slicers behave this way, but Cura and IdeaMaker do.

I haven't done tests to see if 50% infill is stronger or weaker than 24%, but it looks weaker to me.

I'm not sure how much stronger (if it even is) 100% would be, and it also requires that your extrusion rate is setup perfectly. Most places I've read consider 100% to be a waste of filament, but I think that tests need to be done to establish that.

When I print these GoPro mounts for quadcopters, they need to be able to handle impact into trees and the ground at about 50mpg. I've been using PETG since it's structurally strong. Ive done the newest ones at 24%. I am curious to see how 24% compares to 50% and 75%. PETG prints fairly slowly (40mm/s) - so obviously the more infil the slower.

That said, this spool holder printed wonderfully. I printed it in PETG and it made it to 88% flawlessly. I had a filament kink at that time, and it aborted. However, even at 88% it's wonderful, strong, and being used right now!

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