If you believe your door frame is made from a non standard wood take the damaged portion to your local hardware store.
Wood door jamb repair.
1 mark lower 12 16 on door jamb with straight line using combination square and pencil.
Trutrim 4 5625 in x 6 8359 ft pine primed finger joint exterior door jamb.
1 remove any nails or screws from the damaged area.
These can be further modified to suit your needs.
4 set the router in place with its guide bushing against the inside edge of the 1x4s.
2 nail pine 1x4 guide blocks to the doorjamb around the damaged area.
Hold scrap wood block over the repair and use a hammer to tap the glued pieces tight to the jamb.
Repeat to repair damage at the top of the side jamb.
3 adjust the router s depth of cut to equal the thickness of the poplar patch.
Door frame jamb replacement kits are available for purchase that feature pre cut selections of timber in various sizes and thicknesses.
Apply carpenter s glue to broken wood pieces and glue them back onto the jamb.