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2
Preparing and
Attaching the Fins
Step 1 –
Press out the balsa fins from the
laser cut sheet. Stack together and sand
lightly on a piece of sandpaper laid flat on a
table surface to square the root edges where
the fins will attach to the body tube.
Step 2 –
Sand the leading edge and the tip
of each fin round. Leave the root of the fin
where it inserts and attaches to the body tube
un-sanded and square.
Step 3 –
Apply glue to the root edge on
each fin and place on the pre-marked
locations on the body tube. Immediately
remove each fin and set aside a couple of
minutes to tack up the glue. Do this for each
fin.
Step 4 –
After the glue has tacked, apply
another thin bead of glue to the root of the
each fin, then re-attach and hold the fin in
place on the pre-marked fin locations on the
body tube. Do the same for all fins with a few
minutes drying time between fins. Use the fin
alignment guide on this page to make sure
the fins are aligned while drying.
Step 5 -
Apply a thin bead of glue along the
length of the launch lug and attach to the pre-
marked launch lug location of the body tube.