Multi Material Multi nozzle Dolly

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Jim JKla
Posts: 21
Joined: Mon Jun 26, 2017 12:01 pm

Multi Material Multi nozzle Dolly

Post by Jim JKla » Tue Oct 17, 2017 11:42 am

I have been thinking about multiple extruder to get multi material on custom build printers like Dolly.

There’s been a lot of talk about losing build space because you have to allow for the overlap of the extruders on the X axis.

Why not either make the frame wider or turn the extruders so they align on the Y axis then increase the frame in the direction of the y axis so that the bed can have increased movement in that y axis?

OK you may need to increase the carriage in that Y axis to stop any nozzle dribbles falling through the frame but there is no requirement for this to be part of the heated bed just a bit of platform to catch the drips from the nozzle.

That extension could be cardboard it is after all just something to catch those drips.

JeffDM
Posts: 3
Joined: Sat Jan 20, 2018 11:31 pm

Re: Multi Material Multi nozzle Dolly

Post by JeffDM » Sat Jan 20, 2018 11:44 pm

Extending the slides still means you're sacrificing potential build area vs. a single nozzle, there's no escaping that. If you're considering a multiple nozzle on one carriage, I would consider a Chimera (two nozzles) or Kraken (up to four). That limits the amount of travel that needs to be sacrificed to 18mm. I'm pretty happy with the overall idea behind the design.

slippyr4
Posts: 224
Joined: Thu Jun 15, 2017 10:24 am

Re: Multi Material Multi nozzle Dolly

Post by slippyr4 » Sun Jan 21, 2018 9:26 am

The Y size of the prusa is limited by how stiff the rods are. Much longer and you might need to upgrade to 10 or 12mm rods.
Self-built Prusa i3 MK2 clone
My things: https://www.thingiverse.com/slippyr4/designs
My Prusa firmware port for ramps & MKS : https://github.com/slippyr4/Prusa-Firmware

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