That looks fantastic! You might also try cutting the vertical lines first. I know with wood one would also think the crossing cuts would be easier but sometimes depending on the wood it's not the case. It's best to do the hard or difficult spots first, then go cross ways second. Did that make a lick of sense?
If the vertical lines are harder to do, (which I always figured they would be even though I have no idea about metal checkering, I would cut those first on a clean slate.
Just my 2 cents, not worth the electronic impulses these computers use to do stuff.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."