(24 June 2013, 12:23)Barneyboy Wrote: making arrow points from flint or metal or glass just scrap bits I can find
Check out bike spokes if you want to make it a bit easier for yourself. As long as you have a strong pair of pliars, you can make some awesome stuff.
Personal recommendation, three 2 inch sections, sharpened on concrete, then stuck to a shaft with 3x1inch notches at the top, so that the 2 inch sections are buried by 1 inch and protruding by 1 inch. This is a similar system to what Polynesians use for spear fishing. Not huge penetration, but you'll you damage and it's good for a fish. To make barbs, just gently knotch the side of the spoke, or bend all the tips a little.
I did this in the Cook Islands years back with 3 masonry screws we had for our shelter, on a thin shift I was using as a spear. worked really well.