Two screws with springs on them applying pressure between pulley-body and idler-body. The top of the screw needs to be slightly below the surface of the pulley body. If the filament is being ground on the pulleys, the screws are too tight.
Two screws with springs on them applying pressure between pulley-body and idler-body. The top of the screw needs to be slightly below the surface of the pulley body. If the filament is being ground on the pulleys, the screws are too tight.
