Im not 100% sure but on some built in ovens those plastic inserts may turn round in the housing to give you more of an angle to put a screw into the side of the cabinet.
Any help, just ask.
Chris
Again ,good advice. If you have a 35mm hinge hole cutter you could mark out the hole positions,drill down approx 22mm, cut a slot for the bolt with a tenon saw hey presto,bolt holes.
HTH. cant do drawings on here.
Chris
Hi dan, that jig is OK for doing the bolts because when you put your jig pins in the holes, the jig will go past the edge of your worktop allowing you to put the router at the end of the hole in the jig to start cutting the bolt slots. You may also want to put biscuits(not the dunking ones!!)...