Just to expand on  using laser cut templates... though I had better detail from the past, but not having any, I had to reinvent my lies (and fake  news  photos.).

Lucky I've kept all my past model templates,

I didn't remember making so many templates for my Hummer,
though that was back in 2015 when I still had an abundance of MDF trees in my back yard.
I made up templates to hold the solid parts that were made out of Maple and were to be "door kerfed" using my Hummer's Sketchup model,

Using this template to hold the solid part,

I overlaid it with the kerf template using alignment dowels in the corners and used one of these following units
,
in a small router/trimmer, to rout the kerf using the overlaid template,

The customised Foredom

that I quoted in my Hummer post, was incorrect and was used in my wheel treading jig,

If your first cut is too short... Take the second cut from the longer end... LBD