OTED-Adjustable Spool Roller

A spool roller/idler which is easily ("OTED") adjusted to spool widths from about 50mm to 125mm. In the blender file attached, just modify the frame for a different range to your liking or needs.

I never found a spool idler fitting my 2.3 kg spools from ReprapWorld, and I was never certain that I would get those spools again. So, I mocked up this design where the 608-guides in one side are confined while the 608-guides on the other side may slide freely on the axles in a wide range.

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