so it will now look a like the one made by Harold Reedijk .....
http://3dprint.com/31029/colorfabb-xt-3d-printer/
https://mail.google.com/mail/u/0/?tab=wm#inbox/14a4a9f09d6526cb?projector=1
And I wonder, if you would stick to the XY size of the UM, wouldn't it be easier just to buy the heated bed upgrade kit to build the Z stage...
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jonnybischof 60
To be honest, not that much!
The Ultimaker is an awesome printer - as long as it works. There are a few issues which just come from the machine being built "economically" instead of "without compromise".
I'm mostly doing the latter - increasing the machine's build quality, reliability and lifespan. And of course there's the matter of accuracy. UM doesn't use precision parts (concerns the shafts, mostly), and the wooden frame warps with changing temperatures / humidity. The UM black edition v2 will have the whole gantry built up from aluminum. Warping from changing humidity will be gone.
I'm not perfectly happy about that (aluminum actually warps with changing temperature, too), but steel would simply be too heavy. I might do an all-stainless-steel version for the super-enthusiast (and for myself), but I doubt people would really want many of these.
My frame will expand by about 0.4mm over it's total width for a temperature rise of 40°. That's not much, but steel warps only about half as much. And of course the whole frame shouldn't experience a temperature rise of 40° in the first place. I'll take measurements with the prototype to gather some numbers...
Of course there are some real improvements, such as the vastly improved z-stage (which has yet to prove how much better it actually is) or direct drive. I'm also redesigning all the other components, such as the material feeder or sliding blocks, and using a higher quality hotend (the E3Dv6). But really - no reinvention of the wheel here.
My goal is just to build a 3D printer that you can assemble and that WILL work realiably and with maximum achievable accuracy for a long time.
Z-height will probably be a little higher than the UMO, but that's only a detail... V3 might also get a bigger build platform, because with my frame that is not a problem. But I first have to find a bigger heated bed...
I also expect the black edition to be quieter than the UMO due to it's rigid build.
Some improvements about cooling are also planned - I'll see what comes out of it.
One of the most important upgrades will be my improved electronics platform. But this project is huge and will take a long time to get done.
Apart from the fact that the UM black edition will cost around 3 times as much as an UMO kit, there are some drawbacks:
My frame is bigger and heavier (with the same build volume) than the UMO's because it uses 30mm extrusion profiles + 5-6mm walls, where the UMO just has the 6mm walls.
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