The scroll saw is a very versatile electric tool that comes with a variety of blades. Each blade has its own specific use, which can be as different as cutting plastic or rough cutting wood. As a result one might find it necessary to be changing blades frequently on this handy little tool. Here are a few simple guidelines for undertaking this simple procedure.
Unplug the tool from its electrical source. This is a precautionary procedure to prevent someone from accidentally turning on the device while you are in the midst of changing a blade. Also, this safeguards the user from an inadvertent electric shock.
Loosen the screw that is located at the front of the saw. Take careful note that most every scroll saw has two screws holding the blade in place. One is located in front and the other is located at the top and to the side. These screws can come in a variety of forms. Sometimes, they can be in the form of a Phillips head screw or a slotted head screw. In either case, just take the appropriate screwdriver and slowly loosen the screw. In will take a little bit of extra strength to start backing out the screw, but after the first initial twist, just turn the screw slowly, until the blade is partially loosened up. Do not turn the screw so far that it separates from the saw. More likely than not, the manufacturer will provide an Allen wrench to tighten and loosen the two screws. It is a good idea to secure the Allen wrench to the electrical cord with some electrician's tape. A screw with an Allen head will come out in exactly the same manner as a regular screw.
Loosen the top screw. Once you break it loose, it will only take a few turns and the blade will be ready to come out.
Pull out the blade. This is not as easy as it seems. First, you have to move the blade sideways, away from the head of the holding screw, then you can pull straight down and the blade should come right out. If it doesn't, then you might need to loosen the top screw some more.
Pick up the blade that you wish to insert, and examine it closely. There ought to be two small round holes at the top. Slowly slide the new blade into the exact location that the old blade was situated. There are two little round knobs that lie hidden on the shaft. When you slide the new blade over these round knobs, the blade will pop right into place.
Tighten the top screw until it is firmly in place, but not completely tight. Do the same for the screw on the front of the saw.
Go back to the top screw and give in one more hard twist. Some moderation is required, but still the screw has to hold the blade tight while it rips through a piece of wood or plastic. Do the same for the front screw.
Plug the scroll saw back in, turn it on and give the saw a quick test run. If the blade is loose go back and repeat step 7, until the saw blade cuts smoothly. Don't forget your safety glasses.