it ' s a very pretty snowflake tbh 3 <| sep |> fill them with T 1 ships . and hope for the best . <| sep |> have you ever looked under your hardwood stairs at home ? a dado is like a groove on each side for a shelfboard to slide into . Without tools itll be a challenge to complete . the better job would be no screws but maticulous and lengthy in time to complete . Now as youve not built one yet you might as well try to just build one and see what you like about what you did and try to change or add and fix . I do this when planning is a sketch out a basic finished model , then I start a new one , the same but different . do that 6 times and ive got options for sudden issues or complications . Really what I am saying is your first one wont be your one and only . You might as well ask a woodworker near you to be commissioned to built it if that is what you want but you could build this many times over just improving each time as you learn . Without tools you are limited in execution .