Earl,

Price including 3 mandrels, 10mm, 13mm, and 18mm will be $400. That's substantially less than what Art's Hi-Tec jigs sold for. Especially the very last one that went for $1000.

Anyone who has never used one of these jigs thinks that's a lot of money. Anyone who owns one will think $400 is a real bargain. All I can tell you is Emma and I have built literally hundreds of rockets using our Art Rose fin jig.

Emma has set 22 U.S. altitude records. I've set 8. I was on the team that finished 2nd in altitude at the World Spacemodeling Championships in Ukraine in 2016. Emma was on the U.S. team that finished 3rd in altitude in Poland in 2018. These jigs work.

They aren't meant for putting fins on your Alpha (but you can, LOL). They are meant to produce world class precision for world class performance. Dan's jig is world class. At $400 they are a steal.