Deep, flat-bottom holes are where ordinary Forstner bits stop being useful. A standard bit may cut a clean recess, but its short body runs out of reach before the hole is deep enough. Adding a bit extension can solve the reach problem, but it also adds runout, vibration, and another connection that can loosen under … Read more
A brad-point bit is a good choice for drilling clean, accurately placed holes in softwood trim. Its center spur helps keep the bit on the mark, while the two outer spurs score the hole’s edge before the cutting lips remove wood. That usually leaves a neater entry than a standard twist bit—especially useful near a … Read more
Large holes in plywood are easy to start and easy to ruin. A spade bit may cut cleanly through the face veneer, then rip out a ragged cone of fibers as it exits. The damage is worst in thin plywood, cabinet-grade veneer plywood, and holes larger than 1 inch. The good news is that tear-out … Read more
Overlapping Forstner holes chatter when the bit loses support as its rim crosses into a neighboring hole. The fix is usually not a more expensive bit: it is a stable setup, a sensible cutting order, and enough intact wood to guide the rim. For clean work, bore the holes before joining parts, clamp the stock … Read more
Forstner bits and self-feed bits can both bore large holes, but they suit different jobs. A Forstner bit is the better choice when the hole needs a clean, flat bottom and controlled edges. A self-feed bit is built to pull itself through framing lumber quickly, usually with a powerful drill. In laminated wood—plywood, veneered panels, … Read more
Choosing the right Forstner bit diameter for a European cabinet hinge is usually straightforward: match the bit to the hinge cup, not to the screw holes or the hinge’s overall size. Most standard concealed hinges use a 35 mm cup, but smaller hinges may use 26 mm or 30 mm cups. Check the hinge specifications … Read more
For fast, clean hardwood holes, the cutter shape matters—but so do the drill, feed rate and workholding. A sawtooth Forstner bit and a wave-cutter Forstner bit can both bore flat-bottomed holes, yet they remove wood differently. The right choice depends on hole size, depth and whether speed or a clean rim matters most. As an … Read more
A 35 mm hinge cup hole is shallow, wide, and unforgiving: a little runout or a wandering bit can leave a visible crescent in a cabinet door. For hardwood, the best choice for most DIYers is a sharp, carbide-tipped 35 mm Forstner bit used in a drill press or a well-supported plunge jig. A quality … Read more
Why the Cutting Angle Matters A spade bit is simple, but its cutting geometry is easy to ruin. Each side has a cutting lip, and the outer point or spur helps guide the bit through the hole. If you grind a steeper or shallower bevel onto the lips, the bit may cut more aggressively, wander, … Read more
For a large, clean hole in a cabinet side panel, a hole saw is usually the safer choice. A self-feed bit is faster in thick solid wood, but its aggressive screw tip can grab thin sheet goods, chip the face, or pull the drill off line. The right tool depends on the panel material, hole … Read more