When a job is too detailed for a recip saw and the wrong shape for your jigsaw, you’re not always out of luck. Bosch’s Finecut power handsaw (at least partially) fills the gap. Its variable-speed motor oscillates the attached sawblade between 2,000 and 2,800 RPM to make fine and/or flush cuts in wood or plastics.
An internal counterbalance damps vibrations, and the blades mount — tool free — on either the right or left side of the tool for good visibility.
I’ve never used one of these, but from Bosch I get the idea that this tool would essentially handle much of the “rougher” work that you’d normally attack with a fine-tooth hand saw. They say it’s good for flush-cutting doorjambs, shims, and such, and for trimming flooring and PVC drainpipe — though I’d guess I could handle most PVC with my recip.
Street pricing for the saw itself starts around $105, though it’s also available in kit form starting at around $180. (The kit isn’t just a case; it includes a small miter table, both blades, and some clamps. It’s worth a look.)