Well tell me then How could iron hurt Zamak then and not today? All the die casting machines of then and today are made of Iron or steel. I have been die casting and have several people I have worked with in die casting of Zamak and they all tell me the same thing. Lead is the contaminate that causes the zamak to turn to power. Bowser could not sell his zamak scrap because he also had lead in his shop. They would not touch it with a 10 foot pole. You should learn to read. I DID NOT say Bowser models had this problem. I said he could not sell his scrap zamak because the scrap dealers were afraid he had gotten some lead into it. I have seen a few Varney Yard diesel with this problem. Maybe you should talk to some of the people that was in the business back then. Show me your views in writing I will believe it. I have been in this business for 40 years and no one that was in this business of die casting has eve said Iron was the problem. Lead and zinc do not mix. Thank you Larry Jackman Boca Raton FL [EMAIL PROTECTED]
On Dec 19, 2006, at 8:28 PM, Rollain Mercier wrote: > and he replies - > > Sorry Larry but you are all wet. The contamination began 30 years > before the Korean War and is well documented as IRON not lead as > you state. Lead was not used in the casting process as the > temperature is too high. Zamak is composed of zinc, aluminum, > magnesium & copper. You may be correct that some lead may find its > way in a cheap Zamak casting, but for the most part, iron free > castings was essential to the War effort which continued long after. > > And for your further information, copper was more available than > steel during the Korean War era and many diesel locomotives were > clad in thin steel and plywood because of the shortage. My father > was a junk dealer during that period and 'tin' as scrapped cars > were known brought a higher price than copper. > > We did this subject a couple years ago and while the original Zamak > is a metal compound it is subject to several contaminates that > produce little to dramatic effects, the most prevalent is iron and > the effects are swelling and eventual crumbling. Lead would have > little more effect than making the casting soft. > > If you're indicating that Bowser's loco castings had this problem, > I do not know of a single instance where a Bowser locomotive had a > migration problem and I have several in as good a shape as when > they were cast. > > Raleigh in nippy Maine > See my videos at http://www.emporiumpictures.com/ > email me for new releases: Emporium Pictures <[EMAIL PROTECTED]> > > > > At 04:53 PM 12/19/2006, [EMAIL PROTECTED] wrote: >> The cause of Zamak turning to dust is "LEAD" not Iron or steel. Zamak >> requires a little copper. During the Korean war copper was not >> available. So they went to the junk yards and got the old car >> radiators and tossed them into the mix. Problem! Old radiators had >> solider on them = lead and bingo zamak dust after a while. Bowser >> trims his die cast parts in his own shop. He also casts lead. The >> scrape dealers would not buy his Zamak scrap because of the lead in >> his shop. They were afraid lead may have got mixed into it. >> Thank you >> Larry Jackman >> Boca Raton FLsolider >> [EMAIL PROTECTED] >> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
