I have a new build house with hollow panelled doors, the type with a grain
effect. I need to trim at least three of them now carpets are fitted. What
is the best way to cut them to avoid chipping/splintering of the door faces?
I thought maybe deep scoring with a Stanley knife etc. prior to cutting but
I would have to make sure I got the cut perfectly lined up top and bottom
IYSWIM. What about using a router?

TIA

John