Looking at the adaptation of the apache star Fundi has made to throw it with the cestros sling, I have remember an ancient weapon that also could be used like of impact, although its main use was to hurt the feet of men and horses when they stepped on it and thus hinder their advance. It´s the “tribulus” (Latin) or caltrop in English, and is described in the History of the Sling, at the end of this chapter:

http://www.slinging.org/wiki/index.php?title=Historia_de_la_Honda_21

Years ago the topic was discussed in the forum and we were not able to find out how to throw the tribulus with a sling, possibly due to a drawing of Leonardo da Vinci that put us in the wrong track. Then, seeing Fundi in action with the apache star I have cheered up to try it again and… eureka! it has worked finally. The solution is so simple that I am ashamed of not having guessed it then. It´s necessary to use a sling of splitted pouch , or conventional one but enough narrow to slipping between the nails without hardly touch them. It must never be a nail within the pouch. It can be thrown with any style, but spinning only once or twice so that tribulus does not move and entangle the cords. The pictures show better the question.

A very mean looking weapon. The risk of snagging on release would be high; no way I'd want to sling anything like that.

VIDEO! please

Seeing the look of tribulus, it would be terrible, for a load of infantry in tight phalanx, they  being slinged for them.  Direct impacts  it's wounded soldiers and failed shots it are damaging warriors in rear positions because that they don't see it on the floor.

Hondero, he leido tus trabajos y son excelentes. Enhorabuena y muchas gracias.

Hondero nice to see you and your inventions again! A nice thing. I wouldn't try it with the fig8, for sure!

Sweet but dangerous for the slinger?