Reusable Hex Spool

Reusable Spool for Small Diameter spools

This is a remix of a spool by @chsi76. I reduced the diameter of the inner locking hub to fit a smaller diameter cardboard spool. I buy a lot of Inland filament from MicroCenter. The PLA+ and High Speed PLA cardboard spools have a smaller inner diameter of 73.5mm compared to most other spools.  I have also included a couple of adapters that slide over the inner locking hub for more standard spools of 8mm1.5 & 85mm so it can be used with other more standard spools.

I have been using it in the AMS without any issues.

Design

The two halves lock together the same way the original design does. The adapters just slide over the inner hub. The adapters have the knotch to help keep the cardboard inner ring from spinning. The adapters have a cut-out that aligns with the knotch on the main spool and will keep the adapter from spinning as well.

I've added a small hole in the inner hub for people that like to respool filament. I have not done this yet, so any comments on if it works or how to improve it would be great!

I also spaced out the filament holes in the outer ring a bit more to help reduce the bending of the filament.

Assembly

Install the spool like any other resuable spool. The adapters should be installed on the spool side with the knotch before installing on the spool with the filament. The other half will slide in and lock in place.

I did not revise the inner hub assembly at all, I just resized it and added the adapters and spaced out the filament holes on the outer ring.

Here's a link to the model by @chsi76 I used as a starting point:

https://makerworld.com/en/models/36802#profileId-35070