I always saw those Corner Cat Scratchers on TV and on FB and decided to have a go at making one. It turned out better than expected and my cat does enjoy to rub her face and sides against it.
Print walls SLOW and wall acceleration slow to make the cones sturdy. I used 25mms with acceleration of 1000.
Model is keyed, glue together and screw to wall.
I ran supports on the build plate only to help with radii and keys.