Dimensional (construction grade) might not be, but it’s hard to say. Go to the lumberyard and pick out your own and you’re probably OK. I’ve sent boards back

Dimensional (construction grade) might not be, but it’s hard to say. Go to the lumberyard and pick out your own and you’re probably OK. I’ve sent boards back over the years, but it’s more an hit or miss issue of sloppy QA at the yard. Solid wood includes what you find at an “exotic woods” store. There the quality hasn’t declined at all AFAIK. For interior work, it is worth a visit to your local exotics just to see what they have. It’s a fun field trip for the kids if nothing else. More expensive, but often no glue or staining required (sealing recommended) and lives on for many decades as the quality hardwood components can/should be resurfaced/repurposed. Be aware of whether sustainable foresting practices are followed and if the species are endangered. There are many varieties of quality hardwood without those concerns.