Newbie - using tri-square

mardi 17 février 2015

Hi All,



Sorry if this has been asked (couldn't find it in the search) or if its too simple, no one needs to ask.



When using a tri square or even a combination square - are you supposed to use only 1 side, ie the outside/top of the square, or are both sides OK.



I have read/seen how to check square for square by scribing a line and flipping it and re-scribing and these only seem to use the outside top edge of the square.



Further when looking a making a "Traditional/Roubo wooden square" a couple of videos show using a plane to true it up the top/outside. If this is the case, one wouldn't be able plane the inside/bottom edge and thus not be parallel and square.



I hope that makes sense - harder to put into words than i thought.



Cheers




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