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Hi! We're the Strong Family - Ann, Joseph and JJ. We've been working on cars and DIY'ing since we can remember. So, back in 1983, when a shattered grinding wheel nearly caused serious injury while we were working on our Bluebird Bus, we decided to come up with a tool that was safer, stronger, better. That first tool has lead to a whole line of 'em and for three generations now our family-owned company has been making specialty cutting and drilling tools that tradesmen and DIYers alike can count on - all backed by our Lifetime Guarantee.

Individual Multi-Purpose Drill Bits

4.5" Heavy Diamond II - ENDLESS Cutting + Grinding Wheel

4.5" HDII Flange - ENDLESS Flush Grinding + Cutting

14 Piece Bad Dog Multi-Purpose Drill Bits

Individual Rover Bits

3" HDII - ENDLESS Cutting + Grinding Wheel

19 piece Bad Dog Multi-Purpose Drill Bits

1.25" HDII - ENDLESS Cutting + Grinding Wheel

Dried Drool Cutting Wax

5 Piece Rover /Forstner Bit Set A - Fast Cutting Forstner Bits

Multi-Purpose Drill Bits Need Speed - No Buts allowed

If your multi-purpose drill bit isn't cutting, the bit probably isn't the problem. Nine times out of ten, the drill is running too slow. It's the most common mistake we hear about, and the fix takes …

Posted by Joseph Strong on 7th Oct 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools

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Carbide Drill Bits for Metal: Stop Burning Through Bits That Quit After One Hole

If you've ever started a hole in stainless steel and watched your bit go from sharp to useless before you broke through, you already know the problem. High-speed steel and cobalt bits have limits a …

Posted by Joseph Strong on 17th Jun 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools