Here's the sanding block I used for a few years before finding the Great Planes Easy Sander. This is the Warner #436, made for drywall work.
The upper block and wing nut clamped down and tightly held a quarter piece of sandpaper.
They don't make the wooden blocks anymore.
This is the new Warner block, #34436. It's plastic now, the wing nut is replaced with black plastic clamps.
I picked this one up at Lowe's for about $3.00.
The two black clamps are pinched towards the center and the top lifted about 1/4". The sandpaper sheet can be slid out and replaced.
That weird shaped red knob at the top fits the hand comfortably.
More in the next post -