The idea is unique to me.
Hope it works. At worst you you lose a couple blades and a little wood.
Like Thomas Edison said, " I didn't fail, I found a 1000 ways it didn't work.'
Best wishes for success.
There is the lightest weight saw, A hand fretsaw.
WE have had (have?) members that did as good with a hand fretsaw as any elect powered one.
Got a learning curve is the drawback