Gents,

This is a method I use to cut trailing edges.  I put the math in just so you can see how it's done.  You may choose to use a protractor etc. or if you already have a piece and just want to make more, then you can eye ball the settings of the saw by holding the original in place while adjusting the saw.

Bill and others;  if you don't have a saw, I'm sorry you will have to find a buddy with one, buy one, or just sand, plane or carve.   You may also buy the ready mades at a hobby store.

For those of you with access to a table saw you may find this interesting or maybe not.

These measurements closly approximate the Sterling Ringmaster (S1)

I really dislike sanding dust and am aware of other methods this is just my prefered method.

When it's too cold to go out to my unheated shop I can accurately plane a trailing edge and may post this method later.

Since this is a Ringmaster trailing edge I guess I better post it on The Brotherhood of the Ring also. 

If any questions ask here or PM me.