I need to make two 2" gaps in already-install trim / quarter round to install mounting brackets for blinds.
How best to make these cuts?
This is an inside tight install of blinds where the depth of the window sill (just above the two red boxes) is too shallow by 1/4"-1/2" for the mounting bracket, required minimum depth is 3/4", and at that would leave the bracket and blinds protruding beyond flush. I want to install as deep as practical to match the two other windows (not shown) where the inside tight install has blinds just flush with edge of sill.
I can't do an outside install of blinds due to ceiling bulkhead on right, and for aesthetic consistency with the other two windows (not shown).