The fin marking guide from the instruction sheet didn't meet up when wrapped around the tube.
I first made up a marking guide by wrapping a strip of copy paper around the tube and marking the overlap point with a pencil.
This was evenly folded into thirds.
It worked okay, but - folding in thirds isn't usually as accurate as folding into fourths.
I ended up going to payloadbay.com and to "Tools". I printed up a three fin marking guide.
To get to the fin marking guide Tool: CLICK HERE
The box says the tube is 1.97" diameter but the marking guide fit was too tight.
I printed up a second guide setting the diameter to 1.98". This one fit better and will be used on the other upcoming 50mm Quest/Enerjet builds.
The body tube seams were filled with CWF and sanded.
Notice the fin height and launch lug position are already marked in pencil. This gives me a reference when the glue areas are scraped (to remove the filler primer) later on.
The inset picture shows the upper lip of the tube that got a wipe of CA glue applied with a Q-tip.
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