Rusty: Its amazing what can happen even when you know the alloy. I worked for Precision Metalsmiths whe I first came to Cleveland.. Ever cast Stellite? or similar metal alloys? We cast a 1/64 diameter hole that was 7/8" long in Stellite. .We inserted a porcelin pin in the wax body of a weaving machine needle. Great fun. Some of these casting firms threw anything in the pot. I later got into the Mercast process.(frozen mercury) big stuff. John Armstrong > > Point taken! I must also emphasize that in all of the brass parts > I've dealt with over the years, and it has to be in the thousands, > this is a first for me. In the late 60's and early 70's I was taking > apart Japanese brass models and trying to make something different > from them. >From that time until today this has never happened. > This was a whole new experience for me . I now believe that these > parts were made from recycled material. I think it is possible that > there are other parts out there but finding them would be extremely > difficult. Should, and I EMPHASIZE should, these parts contain > Beryllium it will pose no special problem and I wouldn't be that
> concerned. That is unless you want to start drilling into them all > day. Even then it is only the dust that is inhaled that causes a > problem. I have already replaced those castings with ones of my own. > Ones that I have cast and I know what the bronze alloy is. Remember > the whole project was to get the vent holes drilled into the doors! > One point I failed to mention in my original post is that; It was > not the entire part that was that hard, only a portion of it, and > that is really odd. As A brass investment caster myself I have learned > the hard way that using scrap just invites trouble. It is tempting > since the material that I use now costs about $25 a pound. > For those that have never actually messed with copper alloy > casting, as in actually doing a brass casting, it is somewhat like > dancing in Dante's inferno. You can easily get all the, blue, green, > white, and black smoke along with lots of bright flashes and flaming > heat to keep you on your toes. > > > Rusty (The one on the left coast) > > > --- In [email protected], "raisinone" <[EMAIL PROTECTED]> wrote: >> >> Rusty: >> A quick correction before too many people go away miss-informed... >> The Reading 2-8-0 "Camelback" was not built by Ajin, it was built by >> a company called "M.S. Models". Should say that on the box label if >> you have an original box. M.S. also built the OMI USRA Lt. Pacific. >> I think they may have built one other S scale item but I don't >> remember what, possibly a freight car?? >> >> Ajin was very proud of using only virgin material for casting brass >> parts, he never used spent castings or other scrap/re-cycle. If you >> ever went to his factory, that was one thing that was always pointed >> out to visitors. M.S. Models was a small operation that did not >> survive. I have no idea how they would have made castings, most of >> the small Korea brass operations cannot afford a brass casting >> process so purchase from a company that specializes in that; OCS >> Micro Castings was a very popular job shop. >> >> I'm not disputing your very hard casting, just wanted to set the >> record straight on who didn't make it. >> >> Jim K. >> >> >> --- In [email protected], "thebrassbasher" <thebrassbasher@> >> wrote: >> > >> > > > [Non-text portions of this message have been removed] ------------------------------------ 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/
