There's a chance that the metal might crack when only cutting with shears. The hole prevents it cracking. You can also use a nibbler that removes a strip of metal.
@@FarmandSMC I appreciate your kind explanation. You meant it's a cold day at that time so the zinc panel could crack more than in warm weather, didn't you? It looks to be a cold day at that time at a glance.
I wonder why you drilled the hole?
There's a chance that the metal might crack when only cutting with shears. The hole prevents it cracking. You can also use a nibbler that removes a strip of metal.
@@FarmandSMC I appreciate your kind explanation. You meant it's a cold day at that time so the zinc panel could crack more than in warm weather, didn't you? It looks to be a cold day at that time at a glance.
Using aviation snips 🤦♀️