Benchtop drum sander - video

[laprivan]

From the mechanical engineering point of view, both sides would normally be supported. This is the case with thickness planer. However, thickness sanders are typically open at one end in order to effectively double the width of boards that can be finished. With proper adjustment, the open-ended design works quite well.
One improvement would be using more precise axles and Bronze sleeve bearings.
Otherwise, a nicely done projected.
Best Regards,
Laprivan