Measuring Surface Flatness (was "Cabinet Grade Particle Board")

[Ken Thompson III]

Measuring Surface Flatness (was "Cabinet Grade Particle Board")Probably easier for me than for most people, I have plenty of straight edges.  I use 6" wide particle board, run through my table saw, and put plastic laminate on both long edges. 
Lay this on your table, on edge, and shine a light on one side while looking on the other, you shouldn't be able to see any, or very little, light under the straight edge.

Ken
  ----- Original Message ----- 
  From: Mark Grabowski 
  To: 'discussion at nsrca.org' 
  Sent: Friday, November 19, 2004 11:21 AM
  Subject: Measuring Surface Flatness (was "Cabinet Grade Particle Board")


  We've seen some great ideas from several folks. However, a common element to this discussion is that you need to measure how flat the surface winds up. What tricks are you guys using to actually measure how flat the surface is of the bench you just built?







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