I've had a suitable router for a long time
but used the kitchen to justify buying an upgrade. Have also bought the usual jig. They claim it can cope with more angle error than others but info on how is entirely missing. All instructions seem to rely on adjacent walls being reasonably square to each other. Only one video I'm aware of mentions how to set the jig correctly for some width of worksurface and also pulling off the wall etc leaving a gap to correct for wall errors. Setting the...
Worksurface jointing

Worksurface jointing