Quote:
Originally Posted by MMZ_TimeLord
... (3-in-1 oil was breaking down the 3M adhesive) ... so off it came (after I marked the corners of the block outline  ).
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The same happened to me while working with paper templates. The reason is that oils in spray cans have some solvent that loosen the adhesive. Is better using some thin oil applied by drops and the templates will last a lot more.