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Tracing Paper: Flax Tow Beaten to a Clear Pulp, Ure 1839
Tracing paper is paper you can see through. Andrew Ure (1839) says the best, sometimes called vegetable paper, is made from the refuse of the flax mills, the tow, beaten without fermenting into a semi-transparent paste that dries into a transparent sheet.
The picture: the vat room of an 18th-century paper mill, the vatman forming a sheet and the press behind (Diderot's Encyclopédie).
Ophakathi
Two days
Imiyalelo
1
1
Cut and soak the tow
Cut and soak the tow
Cut flax tow into short lengths and soak it in clean water. Do not let it ferment (Ure).
Izinto zokwakha zalesi sinyathelo:
Imicu emifushane yelineni500 g
Amanzi20 amalithaAmathuluzi adingekayo:
Isikelo sensimbi esiqinile
Umphongolo omkhulu wokhuni2
2
Beat to a clear pulp
Beat to a clear pulp
Beat the wet tow for much longer than for ordinary paper, until it forms a semi-transparent paste (Ure). Ure's mills used the beating engine; by hand it takes hours.
Amathuluzi adingekayo:
Isando SokhuniUmphongolo omkhulu wokhuni3
3
Form the sheets
Form the sheets
Dilute the pulp in the vat and form thin, even sheets on the mould, couching them onto felts as for rag paper.
Amathuluzi adingekayo:
Isikhunta nesivalo somenzi wephepha
Ishidi lofelefele woboyaUmphongolo omkhulu wokhuni4
4
Press and dry with care
Press and dry with care
Press the stack, then dry each sheet in the press between sheets of blotting paper, changing them several times so the thin sheets do not crease, as Ure describes for bank-note paper of the same stuff.
Amathuluzi adingekayo:
Amabhodi okhuni ayisicaba okucindezela (ibhili)
Iphepha elimunca uyinki
Isicindezeli sephepha (uhlobo lokucindezela izincwadi)Amathuluzi Adingekayo
8- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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