More printed objects

I tried printing a couple more objects today.

I managed to get a complete MakerBot coin printed.  It looks pretty good.  After that, I tried to print a dodecahedron.  Unfortunately, the machine stopped extruding part way through the print each time I tried.

I think the extruder motor keeps going, but the pulley digs a notch into the filament instead of moving it.  I might try tightening the idler wheel a bit, but I'm wary of breaking it.  Maybe I should check that the extruder is still hot when it stops extruding; if for some reason it's cooling off, that would certainly make the filament too hard to extrude.

Here's the completed MakerBot coin, and a partial dodecahedron:


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