I've been having problems with blowout while doing some flush trimming on hard maple end grain:
To prevent it, i've tried:
- Switching between a 3/4" template bit and a 3/4" shear angle flush cut bit based on grain direction (when not perfectly 90 degrees to grain) and proximity to corner
- reduce router speed a notch or two
- trim as close as possible with jig saw first
- use multiple light passes
- use climb cuts
but i still hit it. I have a lot of flush trimming to do on this project and i'm getting tired of fixing blowouts and short on time. Any other suggestions for reducing blowouts? I think i may try picking up a spiral flush trim bit next. Do these eliminate blowouts completely, just reduce the chance of them, or not do a whole lot for the situation?