Hi, thank you for your replys, the first project I have in mind is a domestic Japanese bath, short in length,but quite deep.(you sit in it and the water comes almost up to neck level!) I lived in Japan in the mid 80's and if you have back problems you cannot beat it. I want to model it, slice it, cut the model out of styrafoam and make a fibreglass mold. My back is hurting in anticpation of the finished product!