3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
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This is pretty obviously a model the designer never thought about printing. That said, I think I'd try splitting it straight down the middle ventrally. Imagine drawing a line from the middle bottom of the resonating chamber in the same direction as the strings up through the top of the fret board. That line cuts through the instrument. Each half is then laid on the new flat side and printed. I'm pretty sure you could get away without supports, though the keys might either need supports or need to be separated out from the model entirely and printed on their own.
How would I go about putting them together? With super glue?
I'd start with superglue, also @pixeltree@lemmy.blahaj.zone makes a very good point. Creating some aligned holes and pins would make the assembly much more exact. I did something like this when I edited this model to fit on my previous printer. Slice the model and while it's aligned in whatever editor you are using, create a 3mm diameter pocket which goes 5mm deep in each side in three places, creating a triangle of pockets. Then print some pins which just fit those holes. This will ensure everything lines up nicely. Once printed and glued, you can use a filler putty like Bondo to fill any gaps. Then sand and paint.
That, but I'd also probably put some pins in to make it exact
A heat gun to weld the filiament together. Superglue actually sucks at bonding a lot of filaments.
Works great for pla though.