Lee Valley used to make a corner chisel unit that could do just that. At the moment you have to carefully chisel out the corner. Alternatively wait for the tool to be made again by smartboxmaker. com Go to that web site supposedly he will have the tool available soon. He promised it over a year ago and it is late. Andrew Crawford makes mainly side mount hinges and locks for real high quality boxes. The hinges are truly the best. If he has the corner chisel available again it will be a good one. Good luckIm trying to get square outside corners in aspire (9.514). See attached pic. Red arrow is pointing to my problem. I want to get that as a square corner. I have tried all types of things and cannot get it. The inside corners are great just the way I want it. Any ideas on how to achieve this?
The tool I suggested is designed for trimming veneers and other shallow cuts so decorative material can be inserted as a border. If you are talking about deep recesses you do need a different tool. Such as a saw or a bull nose plane to clean it up. Alternatively, make the frame out of 4 pieces and glue them together. All router bits create a curved ending point. It is the nature of the tool.Thats the problem, it gives you square corners at the top but the outside corner at the bottom of the cut has a radius which I didnt want. If you click on my photo in the first post you will see the issue is the same as you posted.