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Anyone else ditching the standard HSS bits for… — Tools & Equipment

Anyone else ditching the standard HSS bits for Masonite-hard Massaranduba?

Sam Whitfield Aug 22, 2026 at 10:34 PM

I'm currently wrapping up a 600sqft Massaranduba install in South Florida and the density is absolutely eating my HSS countersink bits for breakfast. I've been going through nearly two high-quality bits per day just getting the pilot holes right for the stainless screws. I picked up a set of the premium cobalt-coated brad points on a whim last week, and the difference in longevity is night and day. I'm getting clean holes without the burning, and they haven't dulled even after three hundred holes in this rock-hard material. Has anyone found a specific brand of cobalt bit that holds an edge better than the rest, or am I just looking for a unicorn here? Also, is it worth investing in a dedicated pneumatic setup for these dense hardwoods, or does the impact driver work fine for you guys?

1 Reply

Robert ChenSep 1, 2026 at 10:34 AM

Robert Chen here. Man, I feel your pain. Massaranduba is brutal on gear. I switched to Fisch carbide-tipped bits years ago and never looked back. They cost a premium, but they stay sharp for thousands of holes. Also, ditch the impact driver for the screws; the sudden torque pulses often snap the heads off in stuff that dense. I use a dedicated high-torque drill with a clutch set low to avoid overdriving. For the pilot holes, keep your speed moderate to prevent overheating the bit tip, which is what usually kills the edge faster than the material itself.