Re: [CAD_CAM_EDM_DRO] Re: cast iron

If you'd like mallable iron casstings the simplest way would be to make your
own.
Visit the HomeFoundry egroupand learn to build your own foundry equipment.
The malleable iron for the castings can be gotten at junk yards.
Justfind some old water heater castings break them yp and melt them down.

Smoke

>Just my 2 cents worth.
>A few years ago we were modifying vintage motorcycles into vintage
>racing motorcycles - worth more money <g>
>All the old frame lugs were made from mallable iron and pinned and
>brazed on. Made enquiries at local foundries and found mallable iron
>was no longer cast. We were advised to use SG Iron [ Spheridol
>Graphite <sp> ] as it was a nearer to mallable. After being cast
>these were sent for heat treatment which was about 24 hours at
>something like 1200 degrees and a slow cool down. Once we got them
>back we could split them with a hacksaw, heat them up and spread them
>open so they fitted over the tubes. Once closed up they were then
>brazed up. I noticed on working these fittings that they performed
>more like steel than cast iron. No way even heating a cast iron lug
>up you could expand it to go over a 1 1/2" tube without cracking.
>
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

>
>Addresses:
>Post message: CAD_CAM_EDM_DRO@yahoogroups.com
>Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
>Moderator: jmelson@... timg@... [Moderator]
>URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>bill,
>List Manager
>
>FAQ: http://www.ktmarketing.com/faq.html
>
>