multipurposebits - Posts

JOIN OUR PACK!

Be the first to get the exclusive offers and news!

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

Bit Ruined In A Shipwreck? It's Guaranteed For Life!

A customer's boat sank. His Bad Dog Multi-Purpose Drill Bits went down with it. That's usually the end of the story. Saltwater gets into a drill bit set and most people write it off. They toss the …

Posted by Joseph Strong on 19th Aug 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools

Go to blog

How to Drill Out a Broken Tap — And Why Your Cobalt Bits Won't Cut It

If you've ever snapped a tap off flush in a workpiece, you already know what comes next: that sinking feeling, the ruined part, the wasted hour. A broken tap is one of the most frustrating problems …

Posted by Joseph Strong on 3rd Jun 2026 Mechanical Engineer & Third-Generation Tool Designer at Bad Dog Tools