FAQs

Frequently Asked Questions


Keep it sharp, avoid forcing it, use proper lubrication, and store it in protective sleeves to prevent edge damage.

Keep the shank and socket clean, store bits in protective holders, and resharpen as needed to maintain cutting performance.

Start with a short pilot hole using a standard-length bit, then switch to the extra long bit for full depth.

Mark the spot with a center punch to give the bit a starting point.

Use a drift key (wedge-shaped tool) inserted into the spindle’s slot to knock the bit free.

They can be sharpened on a bench grinder or with a dedicated drill bit sharpener, keeping the correct cutting angles.

Use a bench grinder or drill bit sharpening tool to restore the cutting edge.

Use protective sleeves, racks, or cases to prevent bending and tip damage.

It uses a hollow, heavy-duty bit with a diamond or carbide edge, combined with hammering action, to grind and chip away material around the hole perimeter.

With correct feed, speed, lubrication, and material matching, a quality cutter can last dozens to hundreds of holes before resharpening.