This jig is used to cut an approx. 10º angle in my strips, so I can join them together to create a 20' long strip (no butt joints needed - I suck at them!)

Here is the underside.  The two bolts align into my radial arm saw base to keep the jig nice and snug and straight. 

Here are 2 pieces of scrap strip that I use to align the mitered strips.  The left-hand one is a bead, about 4" long.  The right-hand one is a cove, about 4" long as well.

After I've placed the glued the miter and placed the bead guide and the cove guide in place (covered with Saran Wrap), I clamp it from the sides and the top and bottom, to ensure everything's straight on all 3 planes (X, Y, and Z)

I use this jig to help align the strip when I'm shaving one end to shape.

Here is a bit larger pic of the strip-holding jig.  I cut a slot slightly larger than 1/4" in a wood block.  I then secure the block to one of the forms at the opposite end from where I'm working.