I tried the packing tape once . I was cutting walnut and tried the tape
the problem was that the saw dust got under the tpoe between the pattern and the tape . I couldn;t see the pattern and that was the last time that I tied packing tape.I don't even use spray on glue any more I use painters tape and a glue stick, It really works best for me. It might be a little more expensive than spray glue but It just works best for me,