I had to pull a couple of cabinet doors off in order to complete my stove installation, and I was concerned that the removal and re-installation of the hinge screws would weaken the existing holes in the fiberboard cabinetry. (Side note: I really wish SMB would use better materials for their cabinetry.)
I wanted to insert my screws into structural epoxy, not fiberboard, so I did the following:
1. Drill out the screw holes to 3/16".
2. Fill the holes with structural epoxy.
3. Insert a short section of 1/8" dowel into the center of the epoxy-filled hole.
4. Drill down the center of the dowel to create a new screw hole.
5. Reinstall the cabinet doors.
I am pretty happy with the end result.
A few notes:
a. The reason I put the dowel in the center of the hole was to provide a soft center to drill down. Due to the fact that the epoxy is harder than the fiberboard, my concern was that if I filled the hole with epoxy alone, when I re-drilled the hole, the drill would want to slip over into the soft fiberboard instead of coring the center of the harder epoxy.
b. My first iteration used toothpicks as the "creamy center" instead of the 1/8" dowel that I used in the second iteration. The toothpicks were great, but it was really tough to drill right down the toothpick without slipping off. The dowel makes for an easier drill.
c. In order to make it easy to start the drill on the end grain of the dowel, I drilled a starter hole in the end of each piece of dowel using a Dremel 118 cutter and a drill press jig.
d. I used West System G/flex Epoxy #655, and a long-nosed syringe to insert the epoxy into the bottom of the drilled out hole.
Epoxy and long-nosed syringe:
Drill press, Dremel 118 cutter, and 1/8" dowel in jig to create starter hole in end of dowel
Dowel centered in 3/16" hole, with starter hole in place to center the drill. Next step is to drill out the dowel for the hinge screw, and put the door back on.