
Good info on the eyelets and slot punch.
The thera-band (vid) reads "exercise band" so I am thinking it's probably very similar (if not same) as the exercise bands I find in the discount stores' small fitness sections (also color coded strength levels)...I'll try to check today.
At home depot I've seen these rubber/plastic caps for bolt ends. (name?)
They are usually used on playground bolts or various kid's toys to protect children from getting cut on bolt ends,
but look same as the one's used to attach rubber tubing to factory made slingshots.....I only could find them in 3/8" last time and would like closer to 1/4" or 5/16"
Been thinking of converting a pistol crossbow to rubber tubing since the bow limbs and string have gotten messed up...
I modded it a while back to use a bow release for trigger (very nice trigger pull)...I have a larger bull-pup crossbow I might look into adding bands to...Off work today, so I'll try to get some info and tinker on it.
BTW,This cool toy was on a Google add top of screen.
It reminded me of a slingshot an [ethnic] kid had in middle school.
It was homemade from several rubberbands (small household kind) looped together and a pouch, no frame, he simply hooked it on thumb and index finger!

The rock went incredibly far...(what he shot it at was another story). 8)