A question was asked of me by Shoptinker on how I set up an Incra Miter gauge for the TS. I thought it might be an interesting topic so I thought I would post it here for others to weigh in on it.
Let me do the usual disclaimer and state that there are many many techniques that we woodworkers use to kink a store-bought jig to his/her personal train of thought. This is just my take.
I originally bought this thing thinking that I would be putting miles of lumber though it in the first month. Sadly, it has collects about as much dust as my Shopfox Tenon Jig. I think that others would agree and will probably weigh in this point – That you shouldn’t buy a tool until you see the need for it (although a good Woodcraft sale is hard to pass up).
The Incra is an incredibly accurate tool. A little hard to set up at first, but after a little tweeking I had it up and running.
Your question was how practical was it to set the fence close to the blade if you plan re-adjusting it to making 45 degree cuts. The manual (I think) states to place it 1/8 from the blade. I think this is somehow to prevent tear out. It doesn’t work. I use an auxiliary sacrificial fence. You should always have a backing to your work as it moves through the cut. For this reason I actually back off the fence so it wont interfere at all regardless of the degree. And let the auxiliary fence make a new hole for the workpiece.
What you see here is my cuts made into my auxiliary fence with the Incra far enough away to not interfere.
What I use is actually a miter sled.
I cut all my work on this and for my tennons I use a sled made to cut with a dado. Store bought tennon jigs are only useful if you plan on cutting something other than 90 degree cuts.
Hope it helps
-- I'd like to believe Murphy's Law haunts my woodshop, because if it's Karma it would mean I had something to do with it. - K.R.