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Prusa models print great, anything else fails

I just built the Prusa i3 MK2 1.75mm. I printed the prusa tree frog and it looked %#*@ near perfect. I then tried to print my own thingiverse object but it was a mess. Blobs big enough to catch either the nozzle or even the probe and rip off the print from the bed. I thought I might have messed something up, so I printed the Triceratops. The triceratops printed perfect again! I got the PRUSA slic3r program, configured it, and again, blobs so big that they get caught and rip off the print. Any suggestions? This is my first 3D printer and I am super excited but I cant get anything of my own to print. Please help

Answer this question I have this problem too

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3 Answers

Too hot material maybe.

Take a look on this page :

you should find some recommandations, for each material on the right temperature.

Did you check the temperature when the frog is printed, and try to apply the same settings (temperature wise, of course)

It might be an extrusion issue, but I would check that in second place.

You can use this video (this is a loooong one, I didnot yet had time to watch it, but generaly, this guy gives good advises)



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Thanks! I checked the temperature and it's was the same as the prints. However, after researching a bunch, I tried messing with the filament retraction settings. I found by retracting a little more, a little faster for a little longer before finishing a layer, that it helped the prints a lot. The supports created by slic3r are a little finicky, but the prints are still working. I think their finicky mostly if there is a support which is rather small (like less then 4mm) which is understandable.

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try to download latest drivers from Prusa website ( Slic3r is included in the bundle and already equipped with best settings for each material. You just need to select correct material profile before generating g-code.

What model are you trying to print?

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Mike will be eternally grateful.
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