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Picture of easy temporary knot
c9 your tool copia.jpg
string will help you to mark straight lines, define angels and so. To tighten the string one needs a rapid knot, easy to make and to undo.

Step 1: Other tools

Picture of other tools
a length of string, slightly elastic
something to measure with
a pencil
some nails
a hammer
and possibly some tongs
 
Kiteman7 years ago
A useful knot, although I think you may mean "temporary" ("not lasting long").
tekaka (author)  Kiteman7 years ago
Yes, you are right. It should say temporary, meaning a knot that will serve its purpose for just as long as you are working on it. My English is not so good. The Instructable came out a bit too dry, I should babble more. one day i will learn. thank you, tekaka