A long time ago I bought several packs of Swiss-Made piercing saw blades from Chronos. They came in bundles bound by soft iron wire and had random thicknesses and tooth pitch. I still have a few left and often wonder what make they were.
The Wilding castle clock I was making at the time had the anchor cut from an annealed file and surprisingly I cut it from the same blade that had cut out all the wheel crossings. It also cut the other steel parts and I think for that whole clock I only used four or five blades.
It often occurred to me whether these would work in my Poolwood scroll saw with the clamps it came with for pinless blades. Maybe the speed is too high compared to the steady stroke of a piercing saw. Also the full length of the blade isn’t used so wear would be concentrated in the middle few centimetres.