Precision Fin Jig
Quickest and Easiest Fin Attachment
A real time saver, the classic "Rose" Fin Jig
has served NAR competitors, members of the
U.S. Spacemodeling Team, and many other
rocket enthusiasts for the past 25 years.
With the Fin Jig, awkward manipulation of fins
to hold them in place is eliminated. They are
accurately positioned and attached in only a
few seconds.
Fillets can be applied immediately and are
perfectly shaped by gravity while the fins and
rocket body are at the correct angle. The job
of attaching fins to boat-tailed rocket bodies,
e.g. FAI styles, is made much easier.
Adjustments are conveniently made for fins of
less than 1/64 in. to over 5/16 in. thickness.
They can be mounted on a rocket body to
within 1/4 degree using the 360 degree
precision dial. Any number of fins that fit
around the body tube are readily attached.
Automatic stops are 120 degrees apart. All
other settings can be locked. Root edges of
thick fins can be shaped to closely fit the body
tube for better holding.
Besides mounting fins, the Fin Jig is used to
attach boost glider motor mounts to pylons,
position scale model features, cut fin slots,
and similar functions. Works with body tubes
to 3 in. dia.
Flights of rockets with accurately mounted fins
are noticeably straighter and higher than
those with misalignments.
The Fin Jigs are individually, hand fabricated
in the USA from aluminum and stainless steel,
providing many years of trouble-free use.

Fin Jig, $350.00 without mandrels
Mandrels 10.5mm, 13mm, 18mm, 24mm @ $25.00 each
Custom mandrels any size up to 29mm @ $30.00 each
Auxiliary Arm (increased fin span, offset positioning ) $25.00
For ordering and more information: HighTechRocketry@cox.net
Finjig with Auxiliary Arm
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