I use a special painters masking tape one of our coating's subcontractors showed me, out on one of the job sites, to avoid the capillary action you mentioned, rhm. I am amazed at the sheer number of different types of 3M painting use masking tapes available, including stick application liquid masking agents. Really handy on glass panes for window sashes.
Bill
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Semper Fi, USMC, 1975-1977
I Can Do All Things Through Him, Who Gives Me Strength. Philippians 4:13