Reinforcer for Metal Clip Hanging Sign

I created a reinforcement piece for our metal clip hanging signs since they are weak at the attachment point and often come unscrewed and wobble. 

Printing recommendations:

• FDM printer with 0.4mm nozzle
• PLA with Generic PLA settings
• 0.20mm layer height
• Supports under the bottom portion - optional (doesn't matter if the inside is pretty!)
• 15% infill
• No brim or skirt needed