Hi,
I'm wondering if anyone can help me? I recently tried to use a dovetail jig and found that my dovetail joints were consistently sloppy on one side of the pin by about 1/16". Everything else fit snuggly when viewed from the side but at the top of each pin there was this 1/16" gap. (and, yes, I tried extending the bit a little but the joint was still sloppy)
After checking everything out, I've concluded that because the bit is off-center in the guide bushing, the bit is allowed to travel a little deeper on one side of the cut. Looking at the bit in the bushing, it is obvious that this is where my slop is coming in.
I removed the bushing and checked the distance from the bit to the edge of the baseplate and then checked the opposite side. There is a
1/16" difference. I tried removing all the screws and rotating the baseplate clockwise a couple of times, but the results are still pretty much the same. (oh, sorry, didn't mention that I am using a Porter-Cable 690 series router with the stock baseplate) I also tried using a baseplate from my plunge router base. Almost the same results. I would have thought that PC would have better tolerances than that. Anyway, can you think of any way to correct this problem so that I can use my dovetail jig?Could I use a bearing in lieu of the guide bushing? My jig requires a
7/16" O.D. bushing so if a bearing is a possibility, do they come in that size? What would hold the bearing on the shaft?I'm a newbie to woodworking and not at all comfortable with the idea of trying to make a new baseplate at this point. I'd just be happy to be able to use my jig to make the drawers for the router table I'm building. I know a little further on in the process I'll be pretty much forced to make a baseplate for the table, but I'm just working on little steps at a time. :)
Thanks, Sandy