Watch strap buckle

This is a watch strap buckle with 7 design. The prong pin and frame buckle are printed at the same time and requires a calibrated printer

Thickness and width of the strap could be adjusted. The buckle thickness, height and frame shape are also adjustable. A strap entry slit option is available. Use OpenSCAD or Customizer to adjust (http://www.thingiverse.com/apps/customizer/run?thing_id=1784421)

Updates:
04/10/2016 - Relax printer tolerance requirement and strengthen frame by adding fillet

The watch strap keeper in the picture is another thing I made http://www.thingiverse.com/thing:1784409