Advice (Defender (Raider X) Gun Arm to Strike Cannon'ish

[bbrain]

So around 1988, I had a Jetfire armor, 1/55 Hikaru VF-1A, and a Matchbox Raider-X.. My older brother had a Strike Valkyrie I was envious of, I traded him my 1A head plus (a gerwalk ishforn or some voltron lions) for his 1S head (not a good trade) and I sawed off one of Jetfires Boosters and tore apart my poor Raider-X to make this

I was happy with it back then, but it got packed away and i only recently found it when i went home, and now i kind o want to update it. My question is, what would be the best method to create a connector to hold the swivel shoulder of the Raider-X to lock into the rear part of the booster?

Commission someone (one of you?) for the job or some type of moulding process/3D printing?

Worst comes to worst i will just glue it on, but i would like to make it semi legit, it's more just to bring back home next time and show my brothers (hey remember this)

thanks

[EXO]

I'd say, buy a piece of styrene or find a piece of plastic the same thickness as the pivot on the arm, then drill a hole that's the same diameter. Cut it in half, then glue into place.

[bbrain]

Wow. Perfect, thanks so much!

[EXO]

You can also add another piece with a bigger hole that goes around the bigger circle. No need to split in half, this can actually make it more stable and keep the split in place.