Blow molding model airplane fuel tank

This is an 8oz Hayes tank being blow molded at MECOA K&B in Irwindale CA. It takes a while to cool in the mold because the wall thickness is heavier than an average bottle.
It extrudes a sock (or tube) and that has to be perfectly aligned with the mold when it closes.
After this it's trimmed, then the neck is machined and the 2 holes are drilled in the nipples.

[@mgreb]

I wish MECOA would start producing the hay's tanks again, The 3 and 4 oz tanks were perfect for Profile control line models, nothing else better. However they have been out of stock for years. I guess I will have to be protective of my stash of Hay's tanks.

[@hixnada8278]

This is great - thanks for sharing. Very happy to know that Hayes tanks are once again in production!

[@xKmotx]

It's very interesting to see the model airplane products being made! 👍

[@fiery1962]

I never knew the process was like that. Thanks for sharing.

[@Killfish37]

Sweeeeeet!