>>> My next question that I'm not finding in the instructions is how and when to apply Vachetta Top 84S?
VachettaTop-84S is applied on the dry surface after dry erasing with LeatherEraser-4. Thus the applied Protector-D has to be completely removed from the start again.
Protector-D is a non-stick protection, thus VachettaTop-84S will fail on its surface.
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