I am into restoring antique woodworking tools, mostly for personal use in my shop.
Some questions about this topic are clearly within the scope of woodworking.se. For example,
how to use a planemaker's float to open up the mouth on a moulding plane
how to repair nicked up wooden screws on a wooden plough plane
But other questions are not as clear. For example,
questions about rust electrolysis
how to make authentic japanning
I can see a few places where the line could be drawn. When does the community consider such questions off-topic?