Grinder (angle grinder) is often used for grinding workpieces made of wood and metal. On it, you can install either a petal circle, or a nozzle with Velcro, on which sandpaper is then attached.
However, grinding workpieces while holding the grinder in hand is not always convenient. Therefore, the author offers an alternative option, and shows how to make a mini-machine for grinding.
First, the author made a small box, on top of it there will be two guides from two segments of the building corner. They are fastened together using two planks.
The main stages of work
Then you need to cut a piece of rectangular plexiglass - the width of the plexiglass should be equal to the width between the guides. And then in plexiglass you need to drill a hole for the grinder.
The next step is to attach plexiglass to the grinder. For this, the author uses two pieces of aluminum corner. We drill holes in plexiglass and corners, then connect everything together using bolts.
After that, put on the grinder a round nozzle with Velcro and sandpaper, and install the angle grinder on the guides. The wooden blank itself is under the grinding wheel.
Please note that the angle grinder must be variable speed. For details on how to make a mini-machine for convenient grinding of wooden workpieces, see this video.