Rockwell is soon coming out with a new Sonicrafter oscillating multi-tool attachment, the Sonisaw coping saw attachment kit. Possibly inspired by Dremel’s similarly-styled Multi-Flex yoke cutting accessory, the Sonisaw allows for detailed cutting and shaping of wood and plastic.
Each Sonisaw comes with 2 spiral blades, 1 straight blade, and 1 carbide blade, and additional replacement blade packs will also soon be available.
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The new attachment is designed to fit Rockwell’s Sonicrafter and other brands of oscillating multi-tools as well.
Buy now(via Amazon)
Replacement Blades (via Amazon)
MSRP is ~$20 for the attachment kit and ~$12 for the replacement blade pack. Both will be available in a couple of weeks.
Alternatively, Dremel’s MM720 yoke cutter has a more compact design, comes with more blades, costs only a few bucks more, and replacement blades are available in separate packs so you can buy only the exact blades you need.

Dremel MM720 (via Amazon)
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Lenny
That could be just the ticket for coping trim!