Rick, the only way to convert your router to use 1/2" bits is to buy a bit extension. This is a short shaft with a collet on the end. I dont think anybody makes one with a 1/4" shaft and a 1/2" collet. You would have to get the 1/2" x 1/2" extension and have the shaft turned down. I would consider this an unsafe practice. It's too much weight to be supported by the 1/4" collet. This would also lower the bit's "up" position quite a ways. The Craftsman Commercial routers are very nice. I had one and liked the way it performed, but I sold it to a guy just starting out. You really need to bite the bullet on this one and replace the old warrior.
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