Author Topic: Crap hack. Bulk filament  (Read 60447 times)

spegelius

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Re: Crap hack. Bulk filament
« Reply #105 on: April 09, 2016, 04:42:26 pm »
I've been having problems with bulk filaments jamming now and then. Adjusting the wheel opposite of the stepper has helped quite a lot, but still some of the filaments tend to get stuck. Now that i change my extruder to Aitrippers Bowden type extruder, the problem got actually worse and i think it's because with bowden type extruder longer prime and suck settings are needed, i.e. filament needs to move backwards and forwards more than with the default direct drive system.

I fixed this by simply drilling the hotend input hole bigger. 2mm drill bit seems to work fine (could not find 1.9mm bit and frankly i don't think that it makes any difference...). Actually there's only ~1mm of material to drill away, after that the hole in the hotend seems to be 2mm (at least) all the way. I wonder if this is just one of the thing that 3DSystems has done to steer people away from using bulk filament... anyhoo, no more jams so far. Before drilling, my attempts at priting with PETG failed within 5 minutes with filament jam. Actually could not even get the filament out of the hotend at one point, had to use the Cube needle to force the stuff out...