Traditional hole finders (also known as strap duplicators) have always been limited by their strap length and to finding one hole at a time!  Harder to find holes require a little imagination, and a bit of practice 

The use of magnetic bearings for finding such holes in non-ferrous materials is not new we have used them for many years. However, the technique is a little easier to master with the introduction of the Metal Seagulls developed top ball setter which makes hole finding and drilling easier than ever before.

Each kit contains

6 x magnetic balls

3 x ball setters (drilled at #40 but can be opened up to other sizes)

1 x roll of painters tape

Full instructions