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Sunday 8 April 2018 at 02:36
Quoted from vireland:Well, the wood hardness already HAS been measured with a gauge and new Sterns came up among the softest. So if you NEED that because you can't SEE the craters, there you go.
Why don’t you just go and do the ball drop test under the aprons of all your machines?
Source: http://pinside.com/pinball/forum/topic/steve-ritchie-discusses-pinball-playfield-dimpling/page/2#post-4326657