Made this replacement window blind drum to repair a bedroom window blinds.
Resolution used was 0.2 SPEED default setting
Used 4 perimeters to give part good strength, rigidity.
Can be printed in vertical or horizontal orientation. Recommend supports to minimize bridging.
As Jacob pointed out this site has useful window blind terminology for the novice, like me.
https://blind-slats.com/wp-content/uploads/2012/06/Blind-Diagram-Useful-Terms-1.jpg
The author marked this model as their own original creation.