The coping jig sled is a basic design that I saw advertised commercially for $90.00. I felt it could be built in the shop for $15 – 20.00 including the cost of this inexpensive plan 🙂 so I drew it up.
The advantage I see with this style of jig as opposed to the work-piece on top versions is everything is referenced from the router table top. Therefore you don’t need to have your bit raised up extremely high or use a collet extension. The movable work holder will even pivot to let you cope an angled work-piece. The transparent fence rides along your router table fence for perfect cope cuts every time.
This shop made coping jig is an inexpensive alternative to commercial models.