PROJECT TIPS
TOOL TIPS

Basic stairway layout

Laying-out stairs
with the “BIG 12®” Square & Layout Bar™

Rafter seat cuts

Laying Out a Square Corner

Out-of-square corners
with the “BIG 12®” Square & Layout Bar™

Rafter Seat Cuts

The Simple way to make rafter seat cuts with the Swanson® Speed® Square

  1. Draw a plumb mark on the rafter where the seat cut starts.
  2. Set the Diamond® over the plumb cut line with the heel of the square against the rafter edge.
  3. Scribe the 3″ line and make the triangular cut.

rafter