what about using a router table ?
they don't have to be big seedy,plenty home made ones on you tube bud,worth a look...No room. I need a bigger shed.
you using a bearing guided bit or guideplate in base of router Seedy ?
A guide plate.
waste out a lot using forstner or auger in drill press first then lots of shallow passes I the way to go I think.
otherwise the bit can furrow in and wander or snatch. also try going the opposite way round to the bits spin.
this is so the bit wont try to dive in an bury itself.
I'll have a look. Cheers.Take a look at the cheapo clarke router table. Its pretty small. Without the wings on its only about 2'x1'. Then make a template for the table and run your box freely inside the template.