|Forum topic by jonlan||posted 05-06-2016 02:13 PM||354 views||0 times favorited||1 reply|
05-06-2016 02:13 PM
I recently bought an Incra LS positioner router system and have been very happy wth it. After trying many other joinery options on the Incra I decided to try out corner post dovetails. Things were going well until I had to cut the dovetail grooves down the length of an 8 inch board. Im running into two problems…
1 – The bit grabs the edge of the board. Each time I start pushing through to cut the groove the bit grabs the board, sometimes quite violently. It sort of scared me the first couple of times it did it. If I go super slow, it helps, but it still grabs. Is there something I could do to help with that?
2 – I just cant seem to get the grooves straight. I thought at first it was because saw dust was get bound up in the cutter about half way through the board so I started doing the cuts in smaller pieces where I’d back out to clear the dust, do another inch, and repeat until I got all the way through. The results are still off. So its almost like its still grabbing even when Im cutting the groove.
Couple of things I was thinking. Maybe the bit? Literally a brand new whiteside bit that has never been used before this and it works flawlessly when Im cutting the other end joints. Then I was thinking the speed of the router. The router is a Porter Cable 7518 and I have it on the second to lowest speed which seems to work well. Increasing the speed seems to make things worse.
Im at a bit of a loss. Any tips that might help me out here?