Slingshots/Catapults?

[bigpaul]

Dave Canterbury made one on youtube but using rubber bands, he had to remove the elastic first to put them on, I thought sod that, i'll use cable ties, I've got one catapult I can use normally, the other I can use as a slingbow, the only advantage of using rubber bands is you can slide them down to use as a normal catapult so you only need one, I've got several...heck their cheap enough on fleabay!!