532
You've Just Been Hit By The Metric System Boys (lemmy.world)
submitted 3 days ago by to c/lemmyshitpost@lemmy.world
179 comments fedilink hide all child comments
 
you are viewing a single comment's thread
view the rest of the comments
[–] 0 points 1 day ago (2 children)

You look at your tape measure, at the number 11 or 13 as appropriate, put a mark there, then take it to the saw and cut it.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 1 point 1 day ago (1 child)

    I meant, for cutting in thirds and quarters. An exact foot you can cut at 3 and 4 inches, but if a board is 13 inches, divide that by 3 and you have to cut at... 4.3333333 inches?

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 1 child comment
    •
  • [–] 1 point 1 day ago

    Same thing you do for cutting 13cm into thirds: make one third a bit fat. Go 4 1/4, 4 1/4 and 4 1/2". Or construct it.

    That's not a problem I face in the wood shop a lot though. A more practical problem: We tend to mill boards to 3/4" in thickness. To do a half-lap joint, you need to cut away half the thickness of each board and then lap them over each other, you can set your depth to 3/8" and you're there. If I'm going to do a bridle joint or a mortise and tenon, a third of 3/4" is 1/4". Show me a third of 19mm on a metric ruler. I'll show you where it is: 6, 6, and 7mm.

  • permalink
  • fedilink
  • source
  • parent