New things to demonstrate.

[windmiller78]

you could build a shingle saw fairly easily, theyre just a frame with a rocking table and 30" dia blade. you'd probably buy one off smokestack quite easily.
i've made scratters before you just need to turn a roller from some sycamore and some stainless steel nails and bobs you uncle, if not harry bray has several at callow hill which could be bought, but they tend to make strong money, even the rotten ones. the cider boys go mad for a nice original one.