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Fine Sharp Sand: Dug from a River Bank, Burnt in Balls and Hair-Sifted (Tomlinson, 1854)
Youblob (drawing after C. Tomlinson, 1854) · Public domain
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Fine Sharp Sand: Dug from a River Bank, Burnt in Balls and Hair-Sifted (Tomlinson, 1854)

Fine quartz sand the way the Sheffield cutlers prepared Trent sand: sharp river-bank sand made into balls, burnt in the fire for a few hours, then crushed and passed through a fine hair sieve; burnt sand was held to cut faster than raw.
Utangiye
A day

Amabwiriza

1

Read the Cyclopaedia

"Trent sand is a fine and sharp sand, collected from the banks of the Trent."
2

Choose and dig

Take river or pit sand rather than sea sand: it is sharper, while sea sand has been rounded. Pale sand is purest (colour comes mostly from iron oxide).

Ibikoresho by'iyi ntambwe:

UmusenyiUmusenyi1 igice

Ibikoresho bikenewe:

IsukaIsuka
Indobo ya Litiro 20Indobo ya Litiro 20
3

Burn it

Make the sand into balls and put them in the fire for a few hours.

Ibikoresho by'iyi ntambwe:

UmusenyiUmusenyi1 igice
AmaziAmazi1 igice

Ibikoresho bikenewe:

Icyobo cy'umuriroIcyobo cy'umuriro
4

Crush and sift

When cold, crush the balls and pass the sand through a fine hair sieve.

Ibikoresho bikenewe:

Isekuru n'Umuhini by'IbuyeIsekuru n'Umuhini by'Ibuye
Ishungura ritoIshungura rito
5

Troubleshooting

Sand troubleshooting.

Flow

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6

History and honest limits

From Charles Tomlinson (ed.), **Cyclopaedia of Useful Arts** (1854), vol. II, "Sand", pp. 576-577 (checked on the archive.org scan cyclopdiaofuse02tomlrich). He gives no fire heat or ball size; the dust warning is ours.

Ibikoresho

2
  • 23
    Umusenyi
    2 ibice
    Umwanya
  • 3
    Amazi
    1 igice
    Umwanya

Ibikoresho bikenewe

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Gathering and Grading Oak Galls: Blue Galls Before the Insect Escapes (Tomlinson, 1854)

Gathering and Grading Oak Galls: Blue Galls Before the Insect Escapes (Tomlinson, 1854)

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