[Ultimaker's displayed print-size is wrong/misleading?]

So I'm trying to print something on an Ultimaker 3 extended, which should be within the specified size, but it has to be reduced to 80% or smaller for Cura to slice it, making it completely useless to me... Does anyone know how to solve this? Otherwise I should think Ultimaker would need to correct those dimensions on their site, as they are seemingly very 'misleading', to put it as nicely as I can. You can see the print below - it is within the limits, with a bit to spare, but needs to be drastically scaled down for it to slice. 

[Massive prints (More than a kilo)]

Did you set infill to 100%, and if so why?  20% is usually very strong.  I guess it would help to show the model.  I have never printed > 30 hours but many people here have printed 4 day prints and longer.  I don't recommend printing something that big the first 100 prints as there is a lot to learn about using the printer.  A lot of things can go wrong and that would such a waste.  Better to do 100 prints that take less than an hour to slowly become an expert.

Also consider breaking the print up (can you show a photo of it?) into multiple parts.

You can change filament part way through a print.  But you should practice that.  I haven't tried it but I think you go to TUNE and then PAUSE PRINT and then while it's paused I think there is an option to change material or you can just pull it out and put in a new one and prime it.

 

What I'm printing is essentially a speaker cabinet, and it is not really possible to split it up - at least that would be a bad idea. The infill was initially set to 100% as that would by far be the best for the acoustics of the speaker, but even at 10% it still takes 6 days vs. 8 days, but the amount of material is reduced to about 0.6kg of ABS. As far as making small prints first, whilst I ideally agree, that is somewhat pointless and impossible here, since what I need for this order is the size it is, and I have nothing particularly smaller I'm in need of printing - though I have experimented some. Enought to know that the failure-rate on these fillament based printers is worryingly high relative to resinbased ones, simply due to things like the fillament not extending properly due to snags/knots on the rolls etc.

I suppose an option on the Ultimaker 3 would be to use both printheads, thus allowing for two rolls of fillament - thought that does also limit the print size slightly, which could be a problem

But go big or go home I guess...

[Massive prints (More than a kilo)]

Hey there, I recently got access to an Ultimaker 3 Extended and thought to myself, with such a large print capacity, this would give new possibilities... BUT! It seems useless, if I'm being honest, but I hope someone can help:

I'm working on a print, which is so far looking like it might end up using the better part of 1.5-2kg's of fillament and take well over a week to print. Does this even stand a chance of being possible? Considering a) the size of a roll is normally 0.8-1kg, and b) the rate of potential print-errors on a small thing, would lead me to expect this to have no hope of even printing a fourth of the model...

Hope you have some insight, cheers!