Acrylic solvent is great for things like that but unfortunately, it also tends to damage the painted finish if it leaches out onto it. Acrylic solvent will actually chemically "weld" the plastic back together and in my opinion, is every bit as strong as before it broke. However, due to the drawback mentioned earlier, which occurs because the solvent is very runny, seemingly thinner than water, a repaint is often in order after a solvent repaired front panel. There are other repair methods such as epoxy, gorilla glue, etc, which leaves an ugly mass on the backside, but since they are too thick to inject into the crack itself (which the solvent can penetrate and fill via capillary action), the front, while stabilized, might still have a crack that you can feel with your fingernail.