hinged dual x carriage for qu-bd mbe

by flatlander, published

hinged dual x carriage for qu-bd mbe by flatlander Feb 25, 2013
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This is a work in progress, and my first thing. The qu-bd model came from here: http://www.thingiverse.com/thing:51916

Gonna try to sneak a test print at work tomorrow and check the fit. I need to come up with a way to hold the extruders down when closed.

I added the sketchup model, feel free to improve on this design, or tell me why you think it's no good. Thanks!

Update 02.25.13 proof of concept looks good, needs some tweaks. Gonna add a small cylinder across all 3 hinges at the rear to insert a pin for a lock/stop. Probably get rid of the plates sticking off the rear (was extra motor support). Have to wait until the weekend, busy busy.

03-02-13 update:
made lots of little tweaks. tried adding nut traps, but the force was not with me today- (I'm just learning sketchup). I laid the revised parts out in a nest including belt clamps, and added pads because I've been getting a lot of curling. I hope this helps. I also added the updated sketchup file if anyone wants it.

Added nut traps.

Finalized design. This is the print that I am going to try and use. I deleted the older files, as they were experimental to begin with.
The updated parts are in the "nest" sketchup file, the other one has the extruder models in it.


I'm going to start vertically, 2 shells, 25% infill, no supports

let me know if you have good results with other settings!

*update: had better luck with 3 shells, .25 layer height, and 10% infill, no support/raft

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What is the distance between the xcarriage rods on this machine? I am planning on going dual with my current robo 3D

What type of fan duct should I use for it ? Could you suggest one for me? I ordered Axial vent from ebay so I prefer the axial tube system.

Cool project! How do you like the QU-BD and your set up now that you have had it for a while. Is it robust or would you do things differently now?

Nice idea to give easy access to the hot end. Only thing I can't seem to figure out is how you got the bolts in that are below the steppers. The closest I could get are machine screws, but they don't quite lie flat enough in the holes to pass under my motors.

Neat - watch out it will appear on Kickstarter as a new design next :)