Duran bottle handle

A tidy tool for pouring hot agar. It fits onto Duran bottle necks tightly. I'll make the handle bigger for large hands in a next release.

This is designed for Polycarbonate or Polypropylene. If you're using PLA, beware that you might need to reduce the neck height for the PLA to bend easier to fit into the neck, as PLA is more stiff than PP and easier to break than PC.

Also beware that PLA might soften if used above its glass transitioning temperature which is about 60~65 degrees Celsius. If you drop the bottle it's not my fault!