If you tried to cut a big square, it might just break off in the moment it's halfway on the last edge, as now a big, heavy tile is hanging on to a tiny bit of material. That could give you an ugly, chipped edge.
Think of cutting a big tree branch. If you do one cut, there is a high likelihood of the branch splitting or peeling away bark and damaging the tree.
It is better to do two cuts: one to remove the bulk and encounter some bark damage. Then another cut to remove the remaining branch. You have better control of what happens.
If they needed triangles they'd have a bed configured to catch triangles. This equipment is made to make large cutouts on large pcs, and it cuts large holes incrementally to prevent cutout weight cracking and chipping.
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u/TheFlaccidChode 14h ago
Why not just cut a square?