Deck Board Spacer

I recently rebuilt my deck and decided to design a simple spacer (6mm) that would also double as a "joist finder" to ensure the screws hit the underlying 2 x 12.

I printed 2 in PLA and 2 in PETG. The PLA spacers did break after repeated use, however, the PETG spacers both survived. Note: I did not insert the deck screws directly through the spacer holes. I used the spacer to mark the drill points. (I used composite lumber and pre-drilled holes for the deck screws.)