Hi Gary, thanks for your question. This model GCM800SJ does not have the facility to trench cut, I would instead recommend the next model up in our range, Bosch model GCM8SJL (Screwfix order code 18086), which is capable of trench cutting and also features an increased cut capacity and a laser guide.
Answered by: Bosch Product Expert
Date published: 2020-06-28