Infinite stackable rod for cloth roller blind axle

Infinite stackable shaft rod for cloth (roller with gap) used for my project Roller Blindshttps://makerworld.com/en/models/1554914-roller-blinds-mosquito-mesh-automated-beta Diameter: 30mmGap: 1mm (to use with cloth with sewn filament) Additional End with 9mm diameter for 609 ball bearing I've glued with superglue for better elasticity. For modifications - subscribe and comment.