Did you consider to release them on a platform like Thingiverse ?

You could add a link in your Steemit post to the zip file from Thingiverse.

Maybe this is a way of reviving this awesome work!

On my Steemit and Thingiverse account i also share free to download 3d printing projects.

And its always nice to see the models you made printed and enjoyed by people over the world.