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Module 6. Materials & hardware

The steepest slope permitted on the scarf of a scarfed plywood repair is

  • 1 in 20.
  • 1 in 4.
  • 1 in 12.

Explanation

A scarf joint in plywood relies on a long, shallow glued taper to develop full bond strength, so the steepest slope permitted is about 1 in 12. A steeper slope such as 1 in 4 gives too little bonding area and would fail, while 1 in 20 is shallower than required.

aero turk asking:

I don't understand what is a scarf of a scarfed plywood

Community Comments (2)

A
avionics Posts: 9 02.04.2017 / 17:03
scarf2
skɑːf/
verb
verb: scarf; 3rd person present: scarfs; past tense: scarfed; past participle: scarfed; gerund or present participle: scarfing
1.
join the ends of (two pieces of timber or metal) by bevelling or notching them so that they fit over or into each other.

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