BT-55 Rocket Fin Can

I set out to make a lightweight fin can for a BT-55 sized body tube that could fit an E sized motor that was also easy to print.  Printed in Anycubic Clear Blue resin, it came out at 38.51 grams, with the motor only 109.90 grams.   The neck is 13.5mm long with  holes cut out to save on weight while still being strong,   The motor mount tube also has holes cutout of it for the same purpose.   This is very light, so make sure you manage your center of pressure by using a longer body tube or make your nosecone heavy enough.    Rocket flew very stable for me using an 18" body tube and a printed nosecone.

I was able to print the motor retainer clip directly on my build plate.   I've printed the fin can itself a couple of times,    standing upright both times,  one with the ring and fins directly on the build plate,  and then i manually added supports underneath the body and threads and the other time i used supports all the way around, both worked just fine for me.