cutting and fitting white gloss cornice/pelmet

want2bmortgage3

i've got white gloss kitchen units and originally didnt buy a cornice / pelmet but soon after realised it looked like something was missing. so i bought the white gloss cornice/pelmet (same top and bottom) from b and q (kitchen from homebase). first of all i'm hoping it will be an exact match when fitted it looks ok but you can never tell.

anyway i have a cutting machine which can be tilted to 45 degrees. my plan is to measure the cabinet widths and depths and cut the wood to the right lengths with the mitre joints. then glue the joints with clear silicon before fitting to the underside and top of the units with screws. i guess cutting from the front (gloss side) is best for smooth cut.

any tips before i attempt this tomorrow/sat is appreciated.

wallbash

then glue the joints with clear silicon before fitting to the underside and top of the units

Could work. but I see a problem with the joint coming apart as you wrestle the cornice/pelmet.
I installed the longest section secularly ( top or bottom) then played with the short section. This would normally be the depth of the wall cupboard. easy handled.

Predrill the holes, install dry, when happy remove screws, glue, back in with screws.

I bought a brand new chop saw for the cornice, have to justify each new 'toy' before the wife allows me the pocket money.