I've gotten some building done on this, quite a bit actually.
First, you must give your baby rocket a bath:
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Motor mount built:
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I decided to go for just using 1/2 inch kevlar simply epoxied to the motor mount tube. I saturated the kevlar with West Systems epoxy and used Rocketpoxy for the centering rings. I used a dremel tool to cut away the fully cured epoxy for the fins. The reason some of it is black is because I mixed up some Rocketpoxy with the black dye for fillets on a 38mm mongoose and just used the leftovers to do fillets on the centering rings.
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After sanding and cleaning I put some Rocketpoxy in the area the centering rings will go.
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Inserting the motor mount tube. I twisted it once I put it in to make sure the Rocketpoxy got where it needed to go, and to line up the areas I ground down with the dremel. I left this overnight to cure. I just left the motor mount to cure flush with the bottom of the tube. I placed the rear centering ring in the bottom to make sure it is aligned. After six hours in front of the heater I injected a batch of West Systems epoxy in between the two upper entering rings to create a block of epoxy instead of a fillet. I did this for the upper centering ring as well. I let this cure, flipped the tube around and injected another batch in between the rings, this time for the upper ring.
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Once the West Systems cured, I tacked the fins in place with rocketpoxy. I aligned them with the good old NASA calibrated eyeball, and once the upper fins were tacked and cured, I tacked the lower fins on and used whatever I had that was straight to align the lower fins. This was after I used Rocketpoxy to secure the weld nut for the lower rail button and superglue to tack it in place. I will go over it a little later with some fiberglass cloth and West Systems. I made tiny fillets with Rocketpoxy to make sure the fins stay on. While this was curing I injected a syringe full of West Systems into the space between each of the fins. Unfortunately there was a little bit of an oversight. I forgot that there was a gap at the tip of the fins, so epoxy kind of leaked out a bit. Okay a lot. It went everywhere. I would have taken pictures but I didn't want to cover my phone in epoxy. I ended up using thin superglue to plug the gap. It was really cool actually. It smoked a little bit when I put it on the rocket, and immediately plugged the gap. I then just gloved up (I didn't have gloves on yet because I hadn't thought I needed) I then spread the epoxy around the body of the rocket in a thin layer. I was planning on doing this anyway to seal the FG, but this just expedited the process. It is curing now, and is nice and sturdy. I just need to do the internal fillets, reinforce the weld nut, and install the rear centering ring.
Till next time...