I'm building some drawers and am trying out one of these drawer locking bits for the first time and am having a bit of trouble with some chip out that I'm getting. For reference, I'm using the Whiteside 3347 https://www.whitesiderouterbits.com/products/3347 on my router table to make the cuts and am cutting half inch maple ply. When I'm doing my passes with the workpiece face flat against the router table face they're coming out flawless. When I'm doing the opposite cut and running the piece vertically against the fence I'm getting some pretty substantial chip out here and there along the length of the cut. I wish I had a picture here, I forgot to take it when I left the shop and should be able to grab one tonight when I'm back there. Just to be clear this isn't tear out along the edge of the ply but rather some large chunks here and there. I solved my earlier tear out issue with a zero clearance insert for the router table fence.
The router bit is brand new and making perfect cuts on the other face so I don't see that as being an issue. My router is a bosch 1617 and is at about 4 on the speed setting which is about 20,000 RPM. The wood is 1/2 maple ply, possibly too soft? I'm running the piece fairly slowly across the fence, possible I have a little wobble in my technique or still too fast?