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Fine Clay Mixed with Sand: Worked Loam for Casting Moulds
Clay mixed with sand is loam, the stuff of bricks and of the clay mould packed round a wax model for casting. Soak the clay, work in fine sand, pick out every stone, and keep working it: the more it is worked, the denser and more uniform it gets.
The picture: our diagram, clay and sand worked together and the stones picked out.
Olùbẹ̀rẹ̀
2 hours plus a night's soak
Ìlànà
1
1
Soak the clay
Soak the clay
Break the clay into lumps, put it in the trough, cover with water and leave it overnight to soften.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Amọ̀1 kgÀwọn irinṣẹ́ tí a nílò:
Ọ̀kọ́ ìwalẹ̀ (ṣọ́ọ̀bù)
Ìgbá àdàpọ̀
Bàkẹ́ẹ̀tì
Omi2
2
Work in the sand
Work in the sand
Pour off spare water. Add fine sand, about one part to two of clay, and knead or tread it in until no streaks show.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Iyanrìn Kékeré0.5 kgÀwọn irinṣẹ́ tí a nílò:
Ìgbá àdàpọ̀Ọ̀kọ́ ìwalẹ̀ (ṣọ́ọ̀bù)3
3
Pick out the stones
Pick out the stones
Cut the mass in slices and pick out every stone, root and hard lump. Knead again; the more it is worked, the denser and more uniform it becomes.
Àwọn irinṣẹ́ tí a nílò:
Ìgbá àdàpọ̀4
4
Keep it damp
Keep it damp
Wrap the loam under a tarp to keep it workable until you build the mould.
Àwọn irinṣẹ́ tí a nílò:
Táàpù5
5
Your mix
Your mix
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