Hi, this must be used in conjunction with a round cutter that is designed to remove the bulk of the material. The square cutter is then used to remove the corners and form a square.
The round cutter can be seen here https://www.screwfix.com/p/armeg-ebs-tri-cut-circular-cutter/65294
Or there are kits that contain both cutters and some other components too, here https://www.screwfix.com/p/armeg-ebs-tri-cut-single-box-kit-4-pcs/64930
and here
https://www.screwfix.com/p/armeg-ebs-back-box-wall-chasing-installation-kit-7-pcs/67733
The depth the square cutter will cut to depends on the depth you remove with the round cutter. 45-50mm deep is easily achievable
Answered by: Armeg Tech
Date published: 2021-01-04