HOW MUCH DOES WOOD COMPRESS FROM DIMPLES IN AN AREA WITHOUT AIRBALLS?
Nubes like to say "My EM or SS does not have have any dimples", But just because there usually aren't airballs with an EM, that does not mean that the wood has not been compressed by the millions of balls that have traveled over the wood.
All the little micro dimples must add up over time, right?
To test the amount of compression, I needed a protected area that would not have any chance of an airball bouncing from a target or dropping off a ledge or ramp.
I also needed an area less than 12" between areas of no ball travel, because my $350 Starret combo square is only 12" long. (this thing is hardened, then ground DEAD flat).
I also needed an area that had all the paint intact, as missing paint would of course affect the measurements.
I found the perfect spot on a 40 year old Xenon playfield.
The area to be measured is UNDER the tube, so no balls could fall off a ledge, drop from a ramp or bounce off the glass.
This playfield has heavy wear, with many areas down to bare wood. It's safe to say this game has had millions of balls served over it.
Note that the Starret is sitting across an area that held 2 pop bumpers.
It's safe to say that no ball ever got under the pop bodies to compress any wood in these areas.
I also avoided any holes that may have raised wood grain around them.