Before trying these I tried half a dozen Morse brand hole saws. Milwaukee held up much better on steel. If any of these failed, it was due to mandrel thread wear, not dull or broken teeth.
Circular saw Makita HS7601, 1200 W blue/silver
58 Review
Circular saw BOSCH GKS 190, 1400 W blue/silver
44 Review
Gasoline saw Huter BS-45M 2300 W/3.1 HP black
100 Review
Saw BOSCH Keo, 0600861900
41 Review
High-Performance Bosch BS80 6W Bandsaw - 80 Inch 4 Inch Blades
11 Review
πͺ DEWALT DW3984C Portable Blade Set of 3-Pack
10 Review
Chest freezer Biryusa 155KX, white
16 Review
πͺ Durable DEWALT DW3986C Portable Blade 3 Pack for Efficient Cutting