IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Contact Cement: Crude Rubber Dissolved in Benzine
Crude rubber cut into fine threads swells and dissolves in benzine (light naphtha) to a cement as thick as honey (Spon, Workshop Receipts, 1879). Coat both surfaces, let them dry, and press them together: the bond forms at once, with no clamping. It joins leather straps, patches and rubber soles.
The picture: our drawing of the bottle, the shreds and a glued strap.
Olùbẹ̀rẹ̀
A few days
Ìlànà
1
1
Cut the rubber fine
Cut the rubber fine
With a wet knife, cut the crude rubber into the thinnest possible slices. With shears, divide them into threads as fine as yarn.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àwo rọ́bà tí a fi èéfín gbẹ13 gÀwọn irinṣẹ́ tí a nílò:
Ọ̀bẹ Iṣẹ́ Ọwọ́
Àlùmọ̀gàjí Ńlá
Òṣùwọ̀n Díjítà Ilé Ìdáná2
2
Fill the bottle
Fill the bottle
Put the shreds in a wide-mouthed bottle, a tenth of its space or less. Fill it three-quarters full with good benzine, free from oil. Keep it away from flames.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Naphtha425 mlÀwọn irinṣẹ́ tí a nílò:
Ìgò Gílásì
Ìgò ìwọ̀n3
3
Let it swell and dissolve
Let it swell and dissolve
The rubber swells at once. Shake it often; in a few days it is as thick as honey. Lumps left: add benzine. Too thin: add rubber.
Àwọn irinṣẹ́ tí a nílò:
Ìgò Gílásì4
4
Glue by contact
Glue by contact
Brush cement on both surfaces and let it dry a few minutes. Give three coats in all, then press the two faces together; no clamp is needed.
Àwọn irinṣẹ́ tí a nílò:
Búrọ́ọ̀ṣì gọ́mù5
5
Rubber per pint
Rubber per pint
Ń ṣí ìwé Jupyter…
Àwọn irinṣẹ́ tó nílò
6- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
Blueprint tó jọra
Àwọn blueprint wọ̀nyí pín ìmọ̀ — ọ̀nà, ohun-èlò tàbí ìlànà
CC0 Àgbègbè Gbogbogbò
Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.
Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.