Hi guys many thanks for all the help, I used auto cad to draw it as it was what I was most familiar with and I was struggling a little with drawing in cambam. I found the problem in auto cad it was some if the chamfers are not linking up for some reason but some are ( it's the ones that go from a circle to a straight line) I have generated what I think is the correct code so will try running it in some foam first and see what it does and allso compare it against what you have given me eddy ( many thanks for that much apresiated)