The 'Ultimate' Filament Guiding Device

[BobenhamHotspur]

I'm developing a filament feeding device that takes the filament from directly under where it exits the hobbed wheel/sprung wheel drive unit and then guides it down into the heat break.

I've just made version 3 but not fitted it yet , I will fit it at the next breakdown (photos etc below) It's 7mm dia x 7mm tall (above the threaded section). I'm currently still using version 2 which is basically a shorter fatter variant of version 3 with a taper (see sketch below)
GuideIdea.jpg
Version 3
.IMG_20150426_184353.jpgIMG_20150426_184304.jpg

The key to this system is screwing the bottom half of the guide into the 6mm threaded exit hole in the extruder body. The main advantage I feel with this type of fitting is that it takes the filament from under the wheel right down to the heat break with no gaps for the filament to escape from.

[bolsoncerrado]

Now you need to take a vid or pic of it in action/place

[BobenhamHotspur]

I now have what effectively is two pieces of plastic M6 threaded rods with a 2mm hole up the centre. 1 goes in the bottom of the feed hole under the brass figment the other in the extruder exit hole under the knurled wheel. Following this latest modification I am now getting some quality Ninjaflex prints out of my printer. Ninjaflex is still a PITA because it'll exploit any little flaw in your set-up but hopefully now I know enough to overcome most of the pitfalls
.IMG_20150509_122923.jpgIMG_20150509_125431.jpgIMG_20150509_144042.jpg

[bolsoncerrado]

So watcha waitin' for to share'm?

[BobenhamHotspur]

So watcha waitin' for to share'm?

They're just a 6mm threaded rod x 12mm long with a 2mm hole up the middle - design a 6mm dia rod with a 2mm hole through it print it @ 100% fill. Tap a thread on the outside, drill a hole up the middle and cut it to length. Bob's your uncle, you're sorted.

[bolsoncerrado]

Aint it easier if u just upload the .STL here? lol

[warx]

cool! will try this approach. I have some acetal rod I can turn in the lathe. Then I'll try my TPU material to see if it works like TPE. Thanks!!

[synthius]

They're just a 6mm threaded rod x 12mm long with a 2mm hole up the middle - design a 6mm dia rod with a 2mm hole through it print it @ 100% fill. Tap a thread on the outside, drill a hole up the middle and cut it to length. Bob's your uncle, you're sorted.

My uncle would have shared the STL.

[BobenhamHotspur]

My uncle would have shared the STL.

I'm not your uncle

[BobenhamHotspur]

Here you go - http://www.thingiverse.com/thing:819698