repairing sheared multilayered chair seat
Hello, this is a job that I have been swinging alternately between trying to read up on and procrastinating about since christmas. The short version is that I managed to break a chair that is my wifes family heirloom and I just dont know where to begin fixing it. The front section of the seat has an overhang and its partially sheared off the unsupported edge. Add to that the seat is curved and made of a sort of laminate of unknown composition, it might be laminated verniers of wood it might be sheets of man made wood based materials and wood. the worst crack on the left side propagates in to the piece about halfway across.
The seat will be covered with a sheapskin upholstery when fully restored so its only the underside that needs to be cosmetically apealling.
I can see that there needs to be some filler in the larger crack on the lefthand side, and then the whole thing needs to be strengthened somehow to prevent it happening again. The only way i can think of fixing it is by using some kind of resin, perhaps expoxy, force it in to the cracks, I managed to save some of the splinters perhaps i could grind those to dust and sprinkle it on the surface of the resin before clamping to achieve a similar finish.
Then to strengthen the whole peice i thought of 2 options, fiberglass/epoxy the top which will end up under the upholstery or cut another layer of wood/ply, perhaps a 5mm, and glue it on as another layer of lamination.
Any advice as to how to proceed would be greatly appreciated.
pic 1 top side
pic 2 worst crack left side
pic 3 underside