Hey! This thing is still a Work in Progress.
Files, instructions, and other stuff might change!
BFB Filament cutter knife
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Published on February 22, 2012
Description
I was fed up with filament pieces that came with the extruder on the print even after cleaning the head on the BFB Touch wiper. So here is what makes life easier and cleaner.
Instructions
Download cutterfilament2.stl and print.
I did mine in ABS. Layer thickness 0.5, Infill of 50%, 1 shell, no raft, no support.
Then cut a little plate of aluminium (+-0.8mm thick)or anything else similar that will stand heat and be sharp enough, following the size and shape of cutterfilamentplate.stl.
Drill two holes of 3mm in that plate following cutterfilamentplate.stl.
Attach the plate/knife with two screws of 3mm to your cutterfilament2 print following my picture.
Set in your printer at a distance of 5mm from the BFB touch wiper.best result found on my machine.
Adapt to your machine: Make sure your the extruder head doesn't hit the knife but just slides along the blade. The extruder hole should be just by the edge of the blade.
Now you are all set to print!
I did mine in ABS. Layer thickness 0.5, Infill of 50%, 1 shell, no raft, no support.
Then cut a little plate of aluminium (+-0.8mm thick)or anything else similar that will stand heat and be sharp enough, following the size and shape of cutterfilamentplate.stl.
Drill two holes of 3mm in that plate following cutterfilamentplate.stl.
Attach the plate/knife with two screws of 3mm to your cutterfilament2 print following my picture.
Set in your printer at a distance of 5mm from the BFB touch wiper.best result found on my machine.
Adapt to your machine: Make sure your the extruder head doesn't hit the knife but just slides along the blade. The extruder hole should be just by the edge of the blade.
Now you are all set to print!
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rahotep
on
August 28, 2012
said:
I've been getting a bunch of dross dragged into my two color prints too. I just made and install you cutter. If that doesn't solve it, I'm adding the brass brush too. Did just the cutter solve you problems, or did you add a brush as well?
Thanks for the model and the instructions1
hairygael
on
August 28, 2012
said:
Hi, thanks for the picture, it looks good. I have been using the cutter for a few months now, and I don't even think of those dross anymore. I use always ABS, from different brands and there is a difference though. The ABS from BFB tends to clog themselves by the cutter, but they stay there and don't go in the print. The ABS from Orbi-Tech works fantastic for me.
License
BFB Filament cutter knife by hairygael is licensed under the Attribution - Creative Commons license.
More from hairygael
....my printer keeps knocking this off with the fan.
With the fan? The only reason I can see, is that the screws you used are too high. Unless BFB has changed something on your model. My fan passes over the screws with a distance of 3mm.