In article ,
"The3rd Earl Of Derby" writes:
John wrote:
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?

Scoring them is a good idea,but why are you scoring them top and bottom? a
carpet is on about 3 to 4mm high.

Depends on the carpet. One with underlay will be more -- mine is 11mm
according to spec (in practice a little more to clear a door).

You could also clamp battens either side of the door to reduce the risk of
splintering but this is finicky to get right.

A good straight router bit will give you a good sharp edge but you need to
put a piece of wood at the ending stage of the router cut otherwise if you
don't it'll splinter the edge of the door.

An electric plane is excellent for this. A new sharp blade will
not cause splintering along the sides, but you'll still need a
scrap piece to prevent splintering at the end. Run the plane
an equal number of times in each direction, to avoid the bottom
of the door taking on an angle due to cumulative errors in the
cutter setting.

--
Andrew Gabriel