here is some of my shanghai's/shangai's, i live just about destitute, and it was the depression that taught our family to make these little bastards to gather rabbits and roos in the 20's 30's and during the world war. i have already broken one, slapping a "yonnie" in the fork it's a couple in from the left and made from redgum with a nice yoke curve. i use office rubbers at the moment, and am waiting until things change until i can get better quality rubber. i have some speargun rubber but it shoots alot slower than venhart brand or esselte office rubber. it is alot more durable, but i prefer the speed and power of the office rubber... until i can buy some theraband tube, or sheet. i have been experimenting and found that tapering, like Joerge Spraves calculator suggests, ie; in office rubber, esselte size 64 4- then 4- then 3- then 3- then ten size 16 venharts and the pouch each side. i know that this may make no sense at all to some of you but please ask me if you have any query. this is the fitting for my homemade natural. oh yeah, the lower photo, the left slingshot is redgum, made about a week ago, strung with japenese rubber and a blundstone boot leather patch, the middle slingshot (or shanghai) made 25 years ago, strung up with an oversized patch, for shooting bluestone railroad bedding, using fowlers jar rubber seals, and venhart rubber bands. the rise is too high for me and is useless except at close range (2-10 metres) the shanghai on the right, is my Acacia shooter (hammerhead wannabe) stung with venharts and esselte bands, patch made out of a boot (tasmanian blundstone) finished today and oiled with my favorite- Neetsfoot oil (i love the smell!). hope all the text is worth the explanation. bye for now! enjoy the photos!