What do I need to do

[Jlg]

what do I need to do to cast a part out of aluminium I've got a wax plug in the shape of what I want what do I need to do it

 

[dobbslc]

Have a look at the @OllyO
Brooklands SV replica thread.

 

[Hopefuldave]

That replica thread's pretty good, if I'm allowed to recommend another forum I'll suggest www.alloyavenue.com...
Lots of tutorials on everything from building the furnace and burner to what raw materials for the casting, degassing, fluxes - you name it.

Dave H. (the other one)

 

[bigegg]

Basically, you need to watch "myfordboy" on you tube.

You need some greensand to make the mold.
A pair of frames to hold the sand.

And a way to melt the aluminium:
The easiest way is to dig two holes about 12 inches deep, a spade width in diameter and about 10-12 inches apart.
Dig a tunnel about 6-8 inch diameter between the holes.
Put your crucible filled with scrap ali in one of the holes (a baked bean tin will work for a single melt, but a (steel!!!) Fire extinguisher or disposable co2 cylinder is thicker metal so safer.
Fill the hole around the crucible with charcoal. (Easier if you use a BBQ chimney/starter or an instant light bag).
Light the charcoal. (A propane flame gun also works).

Force air down the other hole, using shop vac or bouncy castle blower or hair dryer etc.

Add more scrap ali as it melts.
Lift out with a pair of slip join t pliers (thick leather gauntlets + other ppe advised)

Pour

 

[bigegg]

+1 for alloy avenue, although I still think of it as "backyard metal casting"

 

[zzr1200]

I'd be inclined to fire off a pm or email to Doubleboost and see if he can help you, a day on the east coast for you or meet him half way in a steam museum. ....

Then with any luck there might be a video to watch.......

 

[OllyO]

I’m near Bristol, if you want a few scoops of green sand to play with your welcome to it

 

[bigegg]

Just realise you said "wax"

I wrote this about lost wax casting:

http://www.mig-welding.co.uk/forum/threads/alluminium-and-brass-casting.76185/page-2#post-1056877

 

[Jlg]

This is the part in question

 

[bigegg]

That should be easy - there's a natural parting line, so I would do it with a two part cope and drag frame.

 

[Jlg]

That should be easy - there's a natural parting line, so I would do it with a two part cope and drag frame.

Before I have a go I have pmd doubleboost like advised above so I'll see what happens

 

[Jlg]

While I've finally finished it after many hours of filling it started out as a 2"-2"-1" block