Woodworking magazines are full of jigs for routers, tablesaws and drill presses. If I built all the one-purpose jigs I’ve seen in these magazines, I wouldn’t have any room in my small shop to turn around let alone do woodworking.
One thing I’ve noticed about woodworking magazines is that they take essentially the same jig and write ten articles about it, changing it cosmetically each time. For example, how many table saw sleds have you seen in the past year? They all do the same thing! Why not combine a sled with a taper jig and a fixed-angle mitering jig?
My process for creating multi-jigs is as follows:
1. Look for jigs with similar functionality and blend designs.
2. Omit features that unnecessarily over-specialize the jig to a single purpose.
3. If possible, combine jigs that would typically not be used at the same stage of a woodworking project. This will preclude switching settings back and forth on your multi-jig.
By combining jigs, you’ll reduce clutter in your shop.
-- Sir Robert