I made this quick mount one night when the bracket to our Austral pneumatic security door closer broke. Our model is from the 90s (all steel), so unsure if this will work with the current version for sale.

Figured it may be useful for someone with an old model.

Originally it was a quick fix until I could source a new metal bracket, but it has held up well for many years.

I printed this with PETG, 60% infill, 5 walls.

Should be orientated correctly, use supports from the bed if you want clean screw holes (should work either way).