Noob here

I have a wooden sheet of plywood that acts as a protective topper for an outdoor bath tub (don't ask). I'm looking for a way to add folding legs to the underside that will rest in the bath tub when the topper is on, and fold out to form a table sitting alongside the bathtub while it's in use

Not sure how many hand tool users there are here but I’m going to buy a new plane and am debating between a plow plane or a combination plane (both Veritas). Plow plane gets me what I need today which is cutting grooves, dadoes, etc but the combination obviously gets a bit more in functionality and available blade shapes plus it has nickers on both sides so reversible direction. I already have a router plane with a fence which is almost as good as a plow but not quite. Trying to figure out if combination plane has any down sides to it at all that I’m not thinking about before I pull the trigger on it.

I have a workpiece that I want to give an oil finish, but a certain area needs to stay oil-free, because I need to attach a part later on using hide glue. What masking method is safe for oil?