DeFelsko POSITECTOR RTR, Quick Manual

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3
How to Measure
Prepare the test surface
Burnish the replica tape (create a replica)
1. Prepare the test surface
2. Burnish the replica tape
3. Prepare the Gage
4. Measure
Locate a representative site for measurement. Clean
the surface to be tested. DeFelsko recommends the
use of the included putty to remove dust, debris, or
residual blast media from the surface.Firmly press the
putty onto the surface using your fingers, and remove.
Select the appropriate grade of replica
tape based on the target profile. See
tape instructions for assistance.
Pull a single adhesive-backed replica
tape free of its release paper. A “bull’s
eye” circle of paper should remain on
the release paper (it is not used for
measurement).
Apply replica tape to blasted surface. Press the adhesive-
backed ends of the tape to hold it firmly in place during the
burnishing process.
Firmly compress the foam using the rounded
end of the included stainless steel burnishing
tool. Apply sufficient pressure in a circular and
x-y rubbing motion to produce a replica with a
uniform pebble grain appearance. Excessively
hard rubbing should be avoided because the polyester film
could become distorted. It normally takes 30 to 60 seconds to
fully compress all parts of the foam on most surfaces. After
burnishing is complete, remove the replica tape from the surface.