Rob (tinkerings) asked me to make a crystal spool for his crystal Cupcake and I thought that I'd try to make a few improvements to:
I've made the spindle case keyed so they lock together when stacked. I've also added a top tray that the Cupcake sits on that is keyed as well and has slots for the bolt heads on the side of the bot. You can pop the tray off easily to get to the spool, and the top of the spool is secured by a single M5 bolt so it's easy to disassemble to reload. I've also added some PETG fingers around the base of the spool in an attempt to prevent the filament from getting under the spool and binding.
Construction is pretty similar to the original and is pretty straight forward. The PETG fingers are a little experimental at this point, and since the spool isn't any bigger than the stock one, you won't be able to throw a full 5lb roll on it with them installed.
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