The second in our complex router bit series is the Window Sash bit set.
This set is Freud's 99-050 and 99-051 pairing. Many manufacturers make
sash bits, but most are designed as 'stub' tenon bits, working more
like a stile and rail door set. The Freud set is designed to make long
tenons in the joint connections, making a vastly stronger window.
Because of this, the bits require a bit more work, but the extra effort
is well worth it.