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.