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ÀWỌN OHUN WÍWỌ̀
Filter Paper: Soft, Unsized Paper from Linen Rags
Filter paper is paper left soft and porous: made like ordinary rag paper but never sized, so liquid runs through it and solids stay on top. Pharmacists once used such a paper, charta emporetica, for filtering.
Olùbẹ̀rẹ̀
Two days
Ìlànà
1
1
Watch: making linen paper by hand
Watch: making linen paper by hand
Old linen made into sheets with a mould and deckle.
2
2
Cut and cook the rags
Cut and cook the rags
Cut clean linen rags into small pieces. Make a lye by soaking wood ash in water and pouring off the clear liquid, then simmer the rags in it for a few hours to soften them. Rinse well.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àwọn àkísà ọ̀gbọ̀1 kg
Eérú Igi Líle1 as required
Omi1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ìṣẹ́ná
Bàkẹ́ẹ̀tì
Ìkòkò ńlá3
3
Beat to pulp
Beat to pulp
Beat the rags with a mallet, a handful at a time with a little water, until the fibres separate into pulp.
Àwọn irinṣẹ́ tí a nílò:
Òòlù Igi4
4
Form the sheets
Form the sheets
Stir the pulp into a vat of water. Dip the mould and deckle, lift it level and let it drain.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ọpọ́n igi ńlá
Pẹpẹ àti ìdìpọ̀ aṣe ìwé5
5
Couch, press and dry — no size
Couch, press and dry — no size
Turn each sheet onto a damp felt, stack felt and paper, press out the water and hang the sheets to dry. Do not size them: unsized paper stays porous, which is what lets it filter.
Àwọn irinṣẹ́ tí a nílò:
Àwo aṣọ irun àgùtàn
Okùn ìgbẹ̀6
6
Cut and fold to use
Cut and fold to use
Cut the sheets into circles, fold one in quarters and open it into a cone to sit in a funnel.
Àwọn irinṣẹ́ tí a nílò:
Ìṣẹ́náÌtọ́nisọ́nà yìí ń ṣe
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