A
Alan J. Richer
Guest
G'day. folks. Just been thinking about an idea and want to bounce it off the assemblage.
I tinker with old Brit cars, and on the Land-Rovers I tinker with it is becoming impossible to find certain electrical components - for example the fuel tank senders on early positive-ground vehicles.
The basis of these units is a pot metal/Zamak casting with has external and internal detail. These were obviously pressure-cast in a steel mold originally and literally cranked out by the millions I have no doubt.
Well, my shop is not that well-equipped.
It occurs to me that the best way to do this might be lost-foam casting - make up the foam pieces in lots and then cast up aluminium from there.
My question is - how to make up the foam blanks? I can easily see myself making up a plaster or other mold to turn out the foam sections risers and all a half-dozen at a time - but what to use as a pourable foam that will "go away" properly under the ingress of the metal?
Opinions other than "you're an idiot" gratefully accepted.
Thanks - Alan
I tinker with old Brit cars, and on the Land-Rovers I tinker with it is becoming impossible to find certain electrical components - for example the fuel tank senders on early positive-ground vehicles.
The basis of these units is a pot metal/Zamak casting with has external and internal detail. These were obviously pressure-cast in a steel mold originally and literally cranked out by the millions I have no doubt.
Well, my shop is not that well-equipped.
It occurs to me that the best way to do this might be lost-foam casting - make up the foam pieces in lots and then cast up aluminium from there.
My question is - how to make up the foam blanks? I can easily see myself making up a plaster or other mold to turn out the foam sections risers and all a half-dozen at a time - but what to use as a pourable foam that will "go away" properly under the ingress of the metal?
Opinions other than "you're an idiot" gratefully accepted.
Thanks - Alan