First and foremost, my apologies if this argument has been discussed already in another thread... My google fu is weak.
Secondly, the problem: I have bought a Flsun printer and I have some troubles getting the dimensions right... I have printed my usual calibration device, a 100x100 mm square, and I keep getting slightly off dimensions.
I checked the Z movements and then went off to work at the geometry: given that the factory settings were giving me a couple of mms more, I decided to measure the dimensions directly. After much work, I was able to whittle down the error to a 0.5% in a single axis.
However, there must be a better way: isn't there a calculator that would let me infer the geometry data such as delta diagonal rod, smooth rod offset, effector offset legths and such?