Having a push block close at hand is always a smart move. I decided to take a little time to design one that fits the bill of comfort and long life. I landed on a push block with two parts: a simple handle with a replaceable base. A sliding dovetail joins the two together. The groove is in the top of the base, and the dovetail is on the bottom of the handle, with a spot of hot glue to hold them together. To start, I made several replaceable bases and centered a dovetail groove in them (as shown in the drawing above). As you see above, the handle echoes the comfortable grip of a handsaw handle. Then I fashioned the handle. When it came to creating the dovetail, I snuck up on a perfect fit at the router table).