Quoted from vid1900:This is where you start to separate the boys from the men in playfield restoration.
Even sanding the edge of the insert is not enough.
The final step is to prime the plastic with 3M Plastic Primer.
It goes on thin like water and dries in a few seconds.
Now when you apply the epoxy, you can't chip it off.
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I searched for this product... a lot of choices for what looks like the correct product... could not definitively tell what to order from the 3M site... could someone reply with a link please? Thanks!!!!!!