There are a ton of 3D printed fin jigs available on Thingiverse. I don't recall seeing any that were competition quality, but suspect some of you out there could modify them for that, or reverse engineer something that would be close to the Rose jig.

Oh, and George. Like you, I hesitated to buy one because of the price. But when I went to NARAM-48 and saw how much Art had aged, I thought I should get one regardless of price because supply was likely to dry up.

__________________
A dark night in a city that knows how to keep its secrets. But high above the quiet streets on the 12th floor of the Acme Building, one man is still trying to find the answers to life's persistent questions. Guy Noir, Private Eye.

Fox Valley Rocketeers: http://www.foxvalleyrocketeers.org