So I have a built-in coming up that's to be painted. I typically use soft maple for the face frames and the stiles and rails of cab doors. The unit will get casings that match the rest of the house. The thing is they only come in poplar, some in pine. I could make my face frames, doors, shelf edging, and etc. in poplar but I like the durability of the maple. Am I being overly obsessive?
(Architectural Woodworking Forum)
From contributor M:
Maple and poplar have very similar characteristics when painted or stained. I don't see any issue at all in mixing them when they'll be painted. I've actually put poplar crown on a stained maple kitchen before and dyed it to match. Poplar was all I could find and it turned out fine.