Trimming a Wood Door Arch to fit Arched UPVC Door Ask questions and find answers on a range of subjects relating to self build projects

[SouthLondonMo]

I have an arched wooden door frame that I want to trim because I want to remove the old wooden door and thin side panel and replace it with an arched UPVC French door and frame which I got from an architectural salvage company.

What is the best way to trim about 1cm from the wooden frame?