HI ALL, Simplex is well on the way but have no idea what spinning is. It refers to the petticoat pipe "bell the end out by spinning" im sure that you all know what this means but i have not got a clue! Any help Please Keith MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.