The Shop > Metal Stuff

Green sand moulds for cast iron muffler

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ironman:
I made this video for anyone that is curious about how a sand mould is made for pouring molten metal into. In the first mould I use a reinforcing rod to stop the fragile greensand core from breaking. In the second mould I forgot to drill a hole for the draw spike and show a different way to extract the pattern from the sand mould. The third mould shows the normal way to extract a pattern from a sand mould. The castings were for a muffler for a 3hp Fairbanks morse engine that belongs to a friend.   

Fredbare:
Very interesting, looks like many years of experience there, you make it look so easy, thanks for sharing.

John

awemawson:
Tell us a bit about your sand muller - is it a home brew?

ironman:
It is a rough copy of a mixer I saw in a museum in Germany a long tme ago, so simple to make and works so well. When I first ran a cupola I thought there must be a better way of mixing large amounts of sand and this mixer is exactly what I needed.

awemawson:
Any chance you can put some pictures up showing a few details? - I need to go down this road myself soon

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