Core and cog lid for Jobo Tank System 1500/2500

I've created replacement parts for the Jobo 1500 and 2500 film development tank system.

This collection might grow if I need more spare parts, but so far I've got four kinds of center cores for the film spools as well as a replacement lid for the cog system.

### Center cores (all printable without support if you rotate them 180 degrees):
You can print these in flexible filament (e.g. TPU) to use with stainless steel reels (see pictures). I use them with 127 film spools and it works like a