I designed this Heavy Duty Grocery Bag Carrier with an added strengthening rib running through the model the same as the Bag Coat Hangers I designed.
These strengthening ribs add extra wall loops in the centre of the part.
That means the more wall loops you add on the outside of the part will also increase the number of wall loops in the centre of the part.
I would recommend setting 4-5 wall loops when printing and using a random seam setting. I used 15% Cubic infill.
Bag Coat Hanger (Smaller Hook) by SD-3D | Download free STL model | Printables.com
Bag Coat Hanger (Heavy Duty Version) by SD-3D | Download free STL model | Printables.com
As always, I would love to see pictures of your prints.
The author marked this model as their own original creation.