Adjustable Malpha bit

Start by selecting the size range that fits your common joints and hinge placements. The available sets span sizes from 15 mm up to 35 mm, with many packs offering 15, 20, 25, 30 and 35 mm options. For hinge boring and precise woodwork, a 35 mm diameter often delivers clean, flush holes, while the smaller sizes cover edge bore needs and furniture assembly with precise fitting.

Forstner-style Malpha bits create flat-bottomed, clean holes with minimal wandering, which is ideal for hinge mortises and cabinet work. Carbide-tipped options stay sharper longer and perform well in hardwoods, while some sets use standard carbide tips to balance cost and durability for general woodworking projects.

Hinge installations typically benefit from 35 mm Forstner bits to create the proper hinge bore, while 15–30 mm options handle prep work for smaller hinges and alignment holes. Sets that include 35 mm plus mid-range sizes give you flexibility for varied cabinet designs and door configurations.

Keep bits dry and clean after use, wiping away dust and applying a light protective oil if stored for long periods. Store carbide-tipped bits in their case to prevent edge chipping, and keep them organized so you can quickly select the correct size without forcing the drill.

Yes, these Malpha Forstner bits are designed with round shanks to fit most bench drills and handheld electric drills, making them broadly compatible with common workshop equipment for home and professional use.

Individual bits let you add specific sizes as you need, while full sets cover a wide size range (15–35 mm) for hinge boring and cabinet work. Sets with carbide tips offer longer edge life for hardwoods, whereas standard tips may suit lighter wood projects at a lower cost.