Ultimate Spool Holder for M3D Filament

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Summary This external filament holder fits small 120mm spools with ease. The double bearings ensure narrow spools stay centered by riding in the gap between the two bearings. Printing bolts and nuts is also possible here. Instructions Print one holder at a time. Required materials include eight 608 bearings, twelve M8 flat washers, two M8 bolts (65mm long), and six M8 nuts. Installation Instructions Slide bolt into base, then place washer onto bolt, followed by bearing onto bolt. Add another washer onto bolt, then a bearing, and finally another washer. Tighten a nut onto the bolt, then add another. Repeat this process until you reach the end of the assembly. Finally, attach a nut to the bolt on the other side of the base.