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ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Saw Handle Rivets with Countersunk Heads
A hand saw blade is fixed in its wooden handle by rivets through both. Hodgson (1883) preferred plain beech handles with the rivets flush or countersunk: lighter, easier to handle, and no heads standing out to dull other saws in the chest. Head short steel rivets with a cone-shaped head in a nail header.
The picture: our diagram, a countersunk rivet and two set through handle and blade.
Àárín
An hour or two
Ìlànà
1
1
Countersink the header
Countersink the header
Use a nail header with a hole the size of the rivet shank, its top edge filed out into a cone (90°, our angle).
Àwọn irinṣẹ́ tí a nílò:
Pẹpẹ orí ìṣó
Ìfá Irin2
2
Nick the rod
Nick the rod
Heat a mild steel rod of the shank size, and nick it nearly through on the hardy at the shank length plus the head allowance (step 5).
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá Róbótó Irin Rírọ̀0.5 m
Èédú1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Ìdí Alágbẹ̀dẹ
Ọ̀bẹ ìgé lórí ìdí alágbẹ̀dẹ
Ẹmú alágbẹ̀dẹ
Ìbọ̀wọ́ wẹ́lídìn
Gíláàsì ààbò3
3
Head it
Head it
Drop the hot end into the header and hammer the standing stock down into the cone until it fills it. Snap it off at the nick and file any metal spread past the cone off flat.
Àwọn irinṣẹ́ tí a nílò:
Pẹpẹ orí ìṣóÌdí Alágbẹ̀dẹ
Òòlù olórí ìtẹ̀ ìpakàẸmú alágbẹ̀dẹÌbọ̀wọ́ wẹ́lídìnGíláàsì ààbò4
4
Clean up
Clean up
Let them cool without hardening; the tail is peened into a countersink on the far side of the handle. File off burrs so each shank slips into its hole.
Àwọn irinṣẹ́ tí a nílò:
Ìfá Irin5
5
Rod for a countersunk head
Rod for a countersunk head
Ń ṣí ìwé Jupyter…
Àwọn irinṣẹ́ tó nílò
9- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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