Summary:
This video provides a quick tip on how to center your table saw blade.
The host mentions that table saw blades can produce uneven cuts, and that making a mistake when setting the blade height is easy. While there are jigs available to help set the blade height, they only work if you know the centermost point of the blade.
The host then demonstrates a simple trick that can be used on any table saw insert or sled. First, lower the blade as far as it can go and slide a flat edge over the top. Slowly raise the blade until you start to feel resistance. Then, move the blade back and forth until it barely moves the pencil mark on the edge. Use a square from the miter slot to mark the tooth point on the edge.
The same process can be done with a sled, except you will need to line the base of the sled to the front of the table first. Once you have found the center, move one of the teeth tips to the zero line you made and crank it to height. Make sure that the sled is square to the edge before you measure.
The host concludes the video by mentioning that they have 13 more tips pinned in the comments, and encourages viewers to follow for more bite-sized tips.