Use this screw clamp support with a 20 mm benchdog or print it with negativ z value for flat surface. This useful support is also sold by well known manufactures.
Different heights of the groove for more universality. 30 mm in height for one groove and 8,5 mm width fits very well to my screw clamp.
Printed in PETG-CF for high rigidity.
The author marked this model as their own original creation.