Sand casting flask

[antifoul2020]

Any of you gents make sand casting flasks

 

[The_Yellow_Ardvark]

I do.
Plywood sides, pallet off cuts for the rest.
Well covered in Linseed oil, good green sands.
Best I did was home cast a steel hammer.

 

[antifoul2020]

Do you possibly have measurements
And is it boiled linseed or just linseed
Kind regard's

 

[The_Yellow_Ardvark]

The box size needs to be 50% bigger than the item being cast. 25% from all extremes of the pattern.
Only oil will do. I use linseed as I can get it cheep.

 

[antifoul2020]

What setting on the gas regulator for melting copper

 

[The_Yellow_Ardvark]

What setting on the gas regulator for melting copper

Sorry about the delay I have been away.

If I am using gas, the regulator is full bore, start the flame gentle, letting the heat work the way through the crucible.
Raise the heat up, the copper will soon start to go soft.
When the metal is fluid, using a pre warmed spoon, remove the dross from the top. pour straight away.

 

[antifoul2020]

Sorry about the delay I have been away.

If I am using gas, the regulator is full bore, start the flame gentle, letting the heat work the way through the crucible.
Raise the heat up, the copper will soon start to go soft.
When the metal is fluid, using a pre warmed spoon, remove the dross from the top. pour straight away.

 

[antifoul2020]

Pic of my regulator with pressure dial