Is this object actually printable?

Hello to everyone, I am an architecture student and for a project I'd like to print the bearing structure of some spiral staircase, I have carefully prepared a file in Fusion 360 and I now ask myself will this geometry actually be prinatable? and also in some place I have a surface of 0.3 mm, is this maybe too small?  body45.stl

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It is probably doable depending on the printer and settings.  It will need supports also just looking at the picture.

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It would be a challenge but should be possible with the right printer.  I'd recommend looking at SLA to print it.

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