Hi there! I've had this printer about a year now. I used to use my buddies og Ender 3, and when the V2 was on sale I "upgraded" and got my own.
I realize now that for just a bit more money I could've had a much more performant machine, but, oh well. I'm gonna use this for a good long while. I only print as an occasional hobby, or to augment my other hobbies.
Anywho, it's been on a shelf up and out of the way all winter, unused, in a climate controlled room.
I pulled it out the other day to do a few prints, it works great. Ran about 12 or 16 hours of prints through it. But today I noticed these cracks. This seems to be the belt tensioner for the bed? Did I have it too tight? Am I supposed to relax it while it's being stored?
I can probably print a replacement. But I was just wondering what your thoughts were.
Thanks!
Infills over 10 to 15 percent get you very little increase in strength. It's not until you get to the sweet spot of 80-85 percent infill rates do you get a real boost in strength. Then above about 85% the gains again taper off dramatically all the way to 100% infill. Otherwise you are merely wasting filament and money to just feel good. If you need more strength, add more perimeters and tops and bottoms.
I would use a .60mm nozzle, PETG or PLA will work just fine, 4 perimeters, and 4 top and bottom layers. And either 10% cubic or gyroid infill. That should create a part that will last for years.
Thanks!
In my experience doing a bit more than 10% can be helpful in the event of underextrusion, plus I've seen it add a bit more rigidity. But you're right that there are diminishing returns till you start maxing out the infill.
4 perimeters at 0.6mm or 6 at 0.4 should be fine.