3D Print Error (Top portion of the model is not completing)
Hello Prusa Community,
I have a 3D model. I attempted to print the model in my I3 MK3s. When the printing reaches to the top, as you see from the attached image, it is not correctly completing. Printing Settings are all default except the Extrusion Width which is 0.6 mm. I see some posts to rectify this but I wanted to get your perspective and recommendation before I try those. Any help is much appreciated.
Mustafa
RE: 3D Print Error (Top portion of the model is not completing)
We need a copy of your prusa slicer project file for this. File>Save project as to save a 3mf file with the model and all your settings. Then ZIP that 3mf up and attach it here for people to examine. Must be zipped or the forum will silently drop the file and it wont attach.
RE: 3D Print Error (Top portion of the model is not completing)
Hello,
Attached please find the zipped 3mf file. Thank you for your help.
Mustafa
RE: 3D Print Error (Top portion of the model is not completing)
Thanks for the project file. How did you get that to slice with gcode ? When I open it on my machine its complains that it doesnt fit due to the skirt line being outside the bed.
If I turn off the skirt and get tit to slice it is VERY obvious what issue you are having. I'm guessing you are pretty new to either 3d printing or Prusa Slicer ?
When your print gets to the start of the top surface its basically trying to print perimeters in mid-air. It prints the sloping sides and then it goes to print the 5 holes in the design, of course they have nothing to attach to so its just extruding filament in mid air, the rest of that layer also does the same, end of print at that point.
When you slice you can use the preview options to pick up on these things. For example those perimeters are coloured dark blue which means overhang perimeter and the lighter blue of Bridge infill, you can step through the extruder movements and clearly see its not going to work. Those slots in the walls are also really long unsupported bridges, from what I can see from your pic those are also going to be a bit of a disaster due to no support. You can get away with some slight overhang on perimeters, which is why those sloped sides towards the top are printing, they have perimeters to anchor to. Basically after slicing examine the preview and look for warning signs such as these. Will save you filament by catching things before hand.
You will need to use support, which in your current orientation means ALOT of support. Not how I would orient and slice at all as your print time goes up from 8h 16m with 49.33 m of filament to 21h 7m and 141m of filament.
I would flip it over and then add support for the slots and the tabs. Much less support needed. Like that it would need around 9h47m and use just over 54m of filament.
I've attached an updated project with an example of how I would orient the part and how I would attempt the support. I've painted the support areas and also tweaked the support settings so that it will slice and fit on the bed still. Please examine it.
Also your original orientation is moved to a second bed with support so you can see the difference between the 2.
btw your filament profile is missing the density value which is stopping Prusa Slicer from working out the weight of filament, so it can only give you the length on the sliced summary. Having used weight is generally more useful as you can weigh your spool and subtract the weight of the core to give you how much filament is left.