HF has a new electric saw, less than $100, I think, which has two blades next to each other with each set sideways from the center. The one goes out while the other draws in, etc. Looked like a good idea. Looked powerful.
Yours,
Doug Goncz (at aol dot com) Replikon Research
Replikon Research researches replikons, which are self-reproducing configurations of non-living matter in environments that support replication, analogous to organisms living in ecologies.