[michaelbsc]

How about special custom-made spools ?
I can make them out of aluminium for a couple hundred each, we just need a way to hype them.

I worked really hard for a while trying to figure out how to make cheap 620 spools. I know that if you could just find a refurbishable punch-press that actually made the suckers in the 1950s they could still be cheap enough.

But new tooling was just out of the question.