Yep, personally I found more than 5 walls (aka perimeters) is not worth the effort - once you get the that point and you want a strong part, infill type and density will be more helpful.
Honestly, unless the part is tiny, 100% in-fill is a waste of filament ad not stronger than say 42% Adaptive Cubic in-fill.
It's all about compromise, If I want a strong part, I'll typically go for:
In-fill: 42% Adaptive Cubic
5 Bottom / Top Layers
4 Walls / Perimeters
I printed out a Hammer with these settings once as a joke, and I kid you not, you could have bludgeoned someone to death with it. PLA is insanely strong stuff, it's just not as heat-resistant as ABS.
That reminds me, there are some neat tricks you can do with PS/SS (not Cura AFAIK). Say you want a part to have only 1 section that is 100% in-fill. You just add a modifier to it and set the infill to whatever you need. eg The face of a Hammer:
Am I the only one starting to worry about @dJOS and his hammer activities? Isn't Australia already dangerous enough w/out arming it's citizens (and probably Koalas) with deadly PLA hammers?!
It is all I ever use (on rigid prints - TPU is a different story!!!), except when doing 100% infill and then I use rectilinear.
It prints about 25% slower, but has decent strength in all directions (although there are stronger infills... depending on needs). Zero overlap on infill lines means no chance to gunk up the print (due to infill anyway) especially when at higher/pushing max speeds the printer is capable of.
Although if you have a well tuned printer, and/or aren't pushing max speeds, infill overlap/path crossing is less of a concern.
Even with a well tuned printer, though, I can print PETG at higher speeds with gyroid or line infill than I can any other infill.
Finished up one of the prints for the 7 sets of spice racks I'm making for my wife (forced labor - heeelp me! ) and was pretty happy how close I pushed/timed it to the end of the current spool. Finished the most recent print just after I got down to the very last wrap of filament on the spool!
Yes, me too, actually. You'll notice I only posted the pic of one of my remnant spools. The other two I have both have more. I'm trying to use an Octoprint plugin that keeps track of filament used on each print. I had already printed stuff before I started using the plugin, so there was a fair amount of guessing and I got lucky this time.
I'm not sure it's as exciting as those spice racks, but printed some adaptors to hang some of my tools + batteries over the weekend. They used to just sit on top of a work bench, so this should be a little more organized.