This is a common thing to do in wood working and has several solutions depending on how large or small the area is and how detailed the design is. In most cases it starts by drilling a hole in the inside waste area. The hole will have to be large enough to get a coping saw/fret saw/jig saw/scroll saw blade in. For this discussion let's say the opening can have a 1/8" hole drilled in it. You then take the blade off the coping saw and put in throught he hole then attach it to the frame and do your cuts. Keep in mind you do not have to follow the outline.... Made as many cuts as you need to various key points in the design and then take away small areas as needed with other cuts. When the cutting is finished take the blade back off and out. Now depending on how big the opening sand paper of files (riffs) can be used to smooth the cut lines.
In some cases you can use a drill to remove a lot of the material before starting with the sawing.... that makes it go faster.
Got the idea?
Ed
In some cases you can use a drill to remove a lot of the material before starting with the sawing.... that makes it go faster.
Got the idea?
Ed