support poulie AR / Back support
thingiverse
Back Support with large ball bearing instead of the GT2 Pulley with those too small ball bearings. It's allowing more tension on the belt. - Ball Bearing: F685R-2RS (ID=5mm; OD=11mm) - Countersunk head screw 5x45mm If you need a version with a cylindrical head, you simply have to ask.
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