How close are your fins?
If they're within a few inches, here's a trick that I used for my recent
build of a PML Endeavour. I did two fins at a time with mid-cure epoxy, the
forward and rearward. To help line them up, I used a Chip Clips from the
local Safeway grocery store. Presto! Straight fins! This worked great for
If your fins are surface mount, perhaps attach one fin and let it dry. Then
add the second, rearward fin and attach the clip to assist you in getting it
If the fins are farther than a few inches from each other, you might
consider using two dowels, body tubes, etc., on each side of the fins to
help you roll them into alignment. I've applied this technique to launch
lugs to get 'em lined up.
Hope this helps.
> I'm getting ready to put two sets of three fins on a single body tube.
> there any special tips or tricks in lining the top and bottom fins
> most people put on the top set then line up the bottom set, or line a top
> bottom up, then rotate the tube 120d and line up another top and bottom.