shutter lock mechanism

I ve been attempting here to duplicate an existing mechanism to lock my shutters.

The skp sketchup file is a summary of the simple mechanism.

To ckeck before printing : the thickness of the curtains on which it's to be installed.

Parts to buy along the printing : wooden screws and washers.

To improve : maybe too much play between each parts.

Important : improve strength.

For printing i ve been increasing the layer resolution for each part with a 90° bent. (else it breaks too easily).

For aesthetic, make provision for at least 3 layers (maybe 5 for the top one).

For aesthetic and strength, increase the infill...with the day light, the infill shows like it's being x-rayed !! (>20%)