I recently had someone contact me to make walnut treads for them. Simple enough, but during the discussion they weren’t sure if they would go with steel stringers or walnut stringers to match the treads. The treads and stringers will be exposed in this case. I don’t have interest in making the stringers for them and I hope they go with metal, but it did make me wonder how the pros make exposed wood stringers. Do they use LVL type products wrapped or veneered in walnut, or are people using 10-12’+ lengths of 10/4 or 12/4? I’ve been around my share of lumber and I can’t say many hardwood dealers have that kind of stock. Assuming that the boards need to be 10-12” in width as well.
Here’s a random photo from the internet as an example. This looks like Doug fir or maybe oak, which are way more common in longer lengths than walnut.