Fixing larger holes in drywall or cracks in plaster is trickier than repairing small patches. Here are some how-tos: For a big drywall hole, about 8 inches or more, your patch needs backing. Drywall ...

Dear James: I have an old house with plaster walls and many cracks that need to be repaired. How can I fix these so they stay fixed and are invisible? — Julianne T. Dear Julianne: Many older houses ...