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Trouble slicing this print


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Posted (edited) · Trouble slicing this print

Hi there!

I'm trying to print out a mask for someone, but I keep running into issues that I believe are based in the cura software. 5a331e444ed4e_2016-06-1711_48_02pm.thumb.png.fd6b08c078b5cf834bace4d0776d9b46.png shows the mask on the build plate, but when I view in the layer format I get this 5a331e4476244_2016-06-1711_48_25pm.thumb.png.d3309f6f8c4a0d2d57502e2be235a012.png.

I've tried different orientations 5a331e44994da_2016-06-1711_49_52pm.thumb.png.408db55f5cca1260c75e1a325ec01e32.png, which have produced similar results, 5a331e44c2964_2016-06-1711_50_02pm.thumb.png.c7260563470ee7c7b587bd02aee49e9f.png. I've also tried loading the file in both versions of cura, but without any change. I know that the mask was created with thicknesses of at least 1.5 millimeters.

Here's the file (I reduced the size by a factor of 0.9 to make it fit on the build plate): https://drive.google.com/open?id=0B7j5kYDfLjIwTHlBaWFURjI0eVk

Has anyone come across this issue before or think they know what's going on?






Edited by Guest
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    Posted · Trouble slicing this print

    If you switch to Xray mode you'll see that it's full or red areas. Red = problems with the model. This can often be fixed by running the model through the netfabb cloud service.

    But even without that, just looking at the model, it's waaay too thin. You need to thicken the walls.

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    Posted · Trouble slicing this print

    The model needs to be 2x as thick as the nozzle width. So a typical printer has a .4mm nozzle so you need the walls of the mask to be at least .8mm but because of tilting and floating point errors in CAD and in Cura you need a small margin for error so I recommend 1mm minimum thickness on the mask. Or you can lie to Cura and tell it that your nozzle is a bit smaller than it is. For example saying the nozzle is .35mm and the shell width is a multiple of that (like .35mm or .7mm) then it will print down to .7mm. Or you can put in a .25mm nozzle or .15 or even .1mm nozzle (from my store gr5.org/store/) and print thinner but with a .1mm nozzle that mask will probably take a few weeks to print so I don't recommend that.

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    Posted · Trouble slicing this print

    Hey guys, thanks for the feedback, I just realized that I miswrote the wall thickness as 0.15 mm when it is actually at least 1.5 mm thick. Would this still be an issue? I'll try to use netfabb and get back to the thread.

    Thanks for the help!

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    Posted · Trouble slicing this print

    1.5 is much thicker than 1mm so that should be good with a .4mm nozzle. Make sure nozzle is set to .4mm and shell is set to a multiple of .4 (such as .4 or .8mm). If there is no "red" in xray view in cura and it still isn't printing these walls (move through the layers with the slider to be sure and give it time to draw the "current" selected layer) then you are probably wrong about the 1.5mm wall thickness.

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