Slicer making hole in thin but solid area of small print
Hello, I really love Prusa slicer and it has made our prints much better. However, I am having a problem. I am trying to print a small sword which was designed with a triangle shaped hole PART OF the way through it. However the slicer is basically pushing the hole entirely through the sword in one small corner when I slice it. I am using generic PLA settings with 0.10 mm thickness. I tried turning on "detect thin walls" but that only made it worse. Here is a link to the item on thingiverse. https://www.thingiverse.com/thing:3722442/remixes It is the hollow knight sword file. Any thought on how to fix this would be greatly appreciated.
Regards,
Michael
RE: Slicer making hole in thin but solid area of small print
Is this something you see in the printed model, or do you see the hole in the slicer preview? I've tried the default 0.1mm settings and the preview looks good, with at least 10 layers below the hole. Now, I didn't actually print it but fail to see why it would generate a hole.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: Slicer making hole in thin but solid area of small print
Printed laying flat it can print it without any hole as the determining factor is your layer height. When printed upright though (which is the better orientation for the shape) the wall thickness for that part is thinner than a normal nozzle width (when using a 0.4 nozzle with the normal 0.45 extrusion width).
Normally for something like that you could add a small xy compensation like 0.1 but 0.1 doesn't 'quite' close the hole in the slice. It almost does but... The other problem with doing that is that the bottom 'handle' would also be grown in size and then might not fit in the hole its supposed to go in.
It is cases like this that show how important even basic modelling knowledge enough to manipulate a simple mesh is when 3d printing. Slicer tricks only get you part way. Its extremely easy to make the triangle less deep with only passing familiarity of some CAD software.
Personally I use Blender (completely free and very small package that can do so so much).
Try the sword in the attached zip file. It should slice on a normal profile for a Mk3 as I tried it on my install.