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Truing and milling twisted or cupped boards whose width is broader than your jointer is at all times a problem. And this turns into a real headache if it is advisable to do that quick and effectively.
If you personal the widespread duo of a 6” jointer and a 12” planner what I imply. While it’s manageable to skip the jointer and feed a considerably straight 10” or so vast lumber into the planner and mill each faces flat and true, trying to mill a twisted board in your planner just isn’t going to finish up nicely. As we all know, the planner will attempt to press the board flat earlier than shaving its high face after which launch the stress because the board exits the machine. This leads to a easy however nonetheless – twisted board – which leads us nowhere. In this case, now we have a number of choices:
- True and flatten the primary face with a hand airplane, then feed it to the planner, true aspect dealing with down.
- Rip the vast board in half, true every half on the slim jointer, mill the opposite face within the planner, after which edge glue them again collectively.
- Mill one face with the assistance of a router & gantry contraption, then mill it within the planer – trued aspect dealing with down.
- And lastly cradling the crooked board over a platform that helps its topography earlier than feeding it right into a planner. That final strategy is the quickest and the extra widespread one amongst woodworkers.
Cradling technics can come in several types. They may be so simple as shimming the twisted board with a number of wedges to help its flared-up areas. Or be a really subtle system of adjustable slats that pitch to particular angles and conform to the board’s terrain.
Recently I discovered one other approach to cradle the board that on one hand is not going to require a number of sources and time to construct, and alternatively is not going to demand gluing down shims to the platform to nest the crooked board over it.
Next time I’ll present my newly construct cradleboard, AKA EZ Planing Sled.
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