The spool spins with low friction now. So no more awful noises.

The spool holder roll is less than 50mm in diameter. And height is 80mm.

The grooves are for Bambulab Spools and 60mm apart.

There is a second version without them.

For assembly there is a M8 screw needed in length up to 40mm.

And a bearing with inside 10mm and outside 26mm and 8mm width. SKF 6000 2RSL

If these parameters have to change for you, feel free to ask. It's a more than easy thing for me.

Thanks for the adapter part to the A1mini holder. This is from https://makerworld.com/en/models/69495#profileId-73840

If over time this adapter get loose, ill do an updated version which clicks in.