Ah right it's a shelf.
Umm so why did it take so long ? And why such a dense infill. you could have got away with 10% on something that large no problem.
What speed did you print it at ?
I mean if after all this work you're still only printing stuff at less than 100mm/s - was it worth it ?

You've got stepper motors both ends of the cables - so you should be able to speed things up considerably.

I do get that you just like improving things - but there must be some kind of point to it. And in 3d printing surely faster is the main thing to shoot for ?

Hang on a minute....
Right - so at the same layer height and 10% infill and 150mm/s that print would probably clock in at around 25 hours.
And that's without adding in the cylindrical voids.
Okay - weird, the circles slow things dow to around 30 hours.
Printing at 0.4mm knocks it back down to 24 hours.

So presumably you were printing at 75mm/s ?