stephen cia published a new build:

Read more about this build...

 

the two extruders can't be on the same arm basically because the arm is cantilever. two direct dive in cantilever arm just doesn't sound right to me.

regarding synchronization between the two I'm hoping it will be just an initial headache of getting the two arm to be in the same plane when I attach them to their respective Zs carriages. Once locked, that arm is not going to tilt or wiggle

 

Printing benchy ;p

 

With fusion 360 render tool love that feature

 

Thank you I'm also hoping that it will work *cross finger*

 

Finished BOM. this is not a cheap one.... as expected for getting all genuine part including gates belt. All in all including all electronic and controller of choice (duet wifi and the expansion board) it's a $1300 printer... if you start from scratch and have nothing.

that's a steep price to test my concept works or not...

alternatively I could salvage my one and only working printer to bring the cost down for me. hm... decision decision.

 

Alright I think I've gone through many virtual iteration already



time to print all the STLs

 

Don't like the x motor mount so going back to drawing board on that one it's too thin and flimsy

 

This is the culprit. Turns out PLA soften when nema 17 heats up. Not sure exactly what was the temperature but it must be 45°c and above

 

Genuine gates belt GT3 2mm pitch made in USA

 

I was hoping exactly to avoid that... I don't have access to laser or cnc... so I'm keeping it close to the project goal which is not to use any custom plate. I would love to venture into custom plate/ bracket and carriage though perhaps next project

 

Hmm having problem posting STLs.... Upload file says not supported

 

Making sure the arm is parallel to the plane of bed Y axis. I don't think automatic probing breed levelling will be needed

 

getting there

 

I need the heavy mass and rigidity to hit 100mm/s with 8000 acceleration print speed.

 

this one with all the belts and motors installed. it is heavyyy

 

Test printing with 1 toolhead only. Looks good

 

Quick video showing it printing with 1 toolhead

 

Yes I want the benefit of direct but don't want the extra weight. So that's what I came up with

 

Not much tinkering happening here approaching Halloween. All the kids wants is printing... so here's what I did with 40 micron print. took 4hr and pretty happy with the result. lines are nowhere to be seen.

 

Yes absolutely. there are still a few hurdles to iron out before releasing BOM and STLs. I will even release the fusion file.
I've made a few updates along the way based of test print from first toolhead (second toolhead somewhat operational but can't print yet) . and that updates leads me to another update and so on... it doesn't seem to stop but it's getting better so I will have to draw the line at some point.

I'm looking for feedback btw if anyone interested in perusing the fusion file let me know