and add three inches. The butterfly patch can patch a hole from two inches to twelve inches. After you measure the widest part of the damage, add three inches to your measurements and cut a new piece of drywall that size. This cut does not have to be exact. To cut the drywall, but the finished side up and score the cut lines with the razor knife, break at scored marks. Now put the finished side of the drywall face down and score the back of the drywall all the way around about 1.5 inches.
NOTE: Your drill bit should be a tiny bit smaller than the closed end of the anchor. Your screw should be at least 1.25 inches long (for drywall) if you are not going into a stud. The screw should not be longer than the anchor. The bolt should be tapped gently into the hole and should fit snugly. The screw should protrude from the wall just enough to hang your item on (usually 1/8 to 1/4 of an inch). For plaster walls, screws should be at least 3 inches long as the plaster itself may be up to one inch thick.
If you chose the quickset mud method, be ready. I recommend using a corded power drill, mixing rod, and a 5 gallon bucket. For most average patches, just cover the bottom of the 5 gallon bucket with water and add in the dry compound. Start mixing until you get a good consistency. You will need to add more water or compound as you mix. It shouldn’t be very think or very runny. To me it is consistent with clay, if not more liquid than that.
Remove the old flapper valve by either working it off of the supporting overflow tube or simply cutting it off (it will cut easily with scissors) and replace it with a new one. Some new flappers come with a chain attached, while others will use the old chain. Either way, the chain between the flush lever and the flapper needs to be loose enough it will not keep the flapper raised, but tight enough that pressing the flush handle will raise the flapper.
Plaster walls are very difficult, if not impossible, to push a thumbtack, push pin, or a utility knife into. (If you try this, find an inconspicuous spot where it will not show.) Be careful, though, some plaster walls may cause the knife blade to snap off. (Remember playing rock, paper, scissors as a kid? Plaster is the rock and the knife replaces the scissors).