Thanks for the tips, gr5. Unfortunately, they don't appear to be the cause of my problems. There are no red or brown colours in the x-ray view, and it's not fixed by changing the line widths to 0.2mm.
I have been trying other models, including ones that I have successfully printed last week (a 20mm calibration cube), and they are also getting holes in the walls, makes it look like it's something in Cura, and not in any STL file. Could I have ruined a setting somehow?
12 minutes ago, gr5 said:Well there are many possibilities but the most likely two:
1) The model is not manifold. Try viewing the model in xray view. If you see any red or brown then the model is really bad. You can probably fix it with the free netfabb repair service. You have to create an account but the repair service is then free.
2) Maybe the wall is just too thin there. Try setting the line widths to 0.2mm just for an experiment to see if the problem goes away. If so then this wall is too thin. There are lots of things you can do but playing with line width might be the easiest. There are thin wall options as well. A 0.4mm nozzle can print reasonably well down to 0.3mm. Line width smaller than that for a 0.4mm nozzle will start to get bad quality.
3) Normals are wrong. Probably the problem is #1 or #2 above.
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gr5 2,295
Well there are many possibilities but the most likely two:
1) The model is not manifold. Try viewing the model in xray view. If you see any red or brown then the model is really bad. You can probably fix it with the free netfabb repair service. You have to create an account but the repair service is then free.
2) Maybe the wall is just too thin there. Try setting the line widths to 0.2mm just for an experiment to see if the problem goes away. If so then this wall is too thin. There are lots of things you can do but playing with line width might be the easiest. There are thin wall options as well. A 0.4mm nozzle can print reasonably well down to 0.3mm. Line width smaller than that for a 0.4mm nozzle will start to get bad quality.
3) Normals are wrong. Probably the problem is #1 or #2 above.
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