In my chancel furniture build thread I noted that I had gotten frustrated with chipping out of the veneer on my white oak plywood. I was getting clean cuts with the grain, and pretty good cuts across the grain where I could use the fence, but the angled cuts - that was another story. I surmised that I was not getting a rock solid guide through the blade and therefore was getting chip out. So, I started looking for a solution.
I mentioned the fix in the other thread, but a certain bearded moderator that travels a lot insisted I should expound on it.
The solution, for me - YMMV, was to clamp a straight edge along my line and use a bearing guided spiral router bit to clean up the cuts.
After getting the two parallel edges perfect, I placed the frame on top of the ply to mark out my angled cuts. Then, I used the TS to get close to the line.
DISCLAIMER - On all the other pieces that required these cuts I started with the ply and built the frame around it - the easier way for sure. However, this needed to be done in reverse because of the compound angles in this particular part of the build. I'll post pictures of that in the other thread in a few days.
Then I clamp a strait edge along the line
Get everything clamped securly and do my routing
The result is a clean edge and a snug fit. I did have to go back and make a few more passes to sneak up on it, but it was worth it having the nice clean fit.