Saturday, February 27, 2021

ASP MMX Jayhawk Build, Part 4, Fin Gluing & Seam Filling

Note: I've made a correction in the previous Part 3 post regarding the fin templates.
Check Step 3 before cutting out the "wing" fins.   


One of the launch lugs was longer than the other.

I simply cut the longer one down to the length of the shorter lug.

On the left - 
This was when I noticed the outside edge of the wing was too high. It should be the height of the chevron shaped tip piece. I trimmed the leading edge down a bit so the outside edge better matched the height of the tip piece. 

Notice on the right, the leading edge of the fins were rounded. This is an optional step.




There were still some spiral seams on the body tube.
These were filled with CWF and sanded.

A shot of filler/primer and sanding followed filling the seams.
This is one of the few rockets I use CA glue to glue on the fins.
The wing tips were glued on and allowed to dry. A CA glue fillet was applied with a toothpick.
Squeeze out a drop of CA on scrap cardboard. Roll the tip of a toothpick in the glue drop and transfer onto the joint.
 

The small nose cone fin was slid in place and glued with medium CA.

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