The best replacement for coping saw is jigsaw.

The best alternatives to coping saw are rated as following:
★★★★★  jigsaw
★★★★  fret saw
★★★  scroll saw
★★  hacksaw
★  jewelers saw
★  miter saw
  back saw

Your alternative for coping saw is not listed? Suggest!
Speaking about coping saw, one probably shouldn't forget about quarter round.

Other search terms related to coping saw and their ratings are:
★★★★★ quarter round
★★★ crown molding
★★ trim
You have in mind a companion for coping saw and it is not yet here? Propose!



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coping saw
jigsaw
fret saw