This design uses the same basic definition as https://www.thingiverse.com/thing:5945196, but with some obvious modifications to it's overall shape. Instead of using a 7-sided star for the basic shape I used a 5-sided squircle; this is a shape in between a pentagon and a circle. I made the arms thick enough to hopefully prevent them from breaking during normal use, but this print is a bit more fragile than most. It printed in just under 6 1/2 hours using a print speed of 100 mm/sec and a layer height of 0.200 mm.