Hi When I did my welding exams we had to provide test Pisces one of which was as previously said a bend test we also had to do do nick break and machro etch also you have not said weather you are interested in MIG, TIG, Gas or Ark as they all produce different results also I have welded together HSS and ordinary Black mildsteel using mig you can weld ferrous metals of unknown type using dissimilar filler rods or wire any other help with welding please do not hesitate to ask. Steve (UK) --------------------------------- To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. 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.