View Shop Categories

Forstner Extension Bar


Planet Extension Shafts 200mm or 280mm long.

A Forstner Extension Bar for the Long Series of Forstner Bits. These extend the maximum depth of cutting.

  • There are two sizes of extension bar, 8″ (200mm) and 11″ (280mm).
  • The 8″ extension has a 3/8″ (9.5mm) shank and fits Forstner Bits up to and including 50mm.
  • The 11″ extension has a shaft of 1/2″ (12.7mm) and extends Forstner Bits from and including 2″ (50.8mm).

Please note that these are not compatible with the Maxicut Forstner bits, they have their own extensions.

Part Number:

Earn up to 26 Points.

Home Delivery

We dispatch orders Monday to Friday, no parcels leave us on a Saturday or Sunday.

Returns Policy

At Olivers Woodturning we like to keep things simple and fair so we have a no quibble returns policy.

Get in touch!

We want to be more than just another shop