Safety

Ensure nobody is distracting you when operating the tool.
No loose clothing or jewelry.
Do not wear gloves.
Always wear eye protection.
Ensure long hair is tied back.

Usage

Check the condition of the sanding discs or belts. If necessary, use a sandpaper cleaner (large 2 x 2 x "whatever is left" eraser looking block).
Move your work piece into the sander lightly. If you need to press hard, the sandpaper needs to be cleaned or replaced
On the disc sander, use the right side of the table so that dust is expelled down and not into your face.

What the sanders Do

We have three additional sanders and a downdraft sanding table to complete our tour of large sanding tools:

Disc Sander. Wiki page
This ShopFox has a large rotating disk with sandpaper attached with adhesive. Always start the machine before approaching it with your work piece. Place the piece on the right side of the disc. it is important to keep aware of cutting tool rotation in all tools. The disc sander rotates clockwise so the thrust of the sanding disk will press the work piece securely to the table. It will also direct sawdust downward for dust collection and not into your face. (The machine is actually a combination disc sander and vertical belt sander tho the belt sander part is damaged and unused)
Oscillating Spindle Sander. Wiki page
The SteelCity Sander rotates a drum which also moves up and down. This double action serves two purposes, it cuts curved surfaces quite well and by moving up/down, provides a cleaner cut than a straight tracking sander (AND it prevents over wearing a single area of the sanding medium). Sanding drums come in a wide variety of grits. Drums can be changed by loosening the holding nuts. They work as a pair below the table and you must use two wrenches to loosen them

Oscillating Edge Sander. the Wiki page

The Jet is a horizontal belt sander.
It has an oscillating action like the Steel City Oscillating Spindle Sander. The belt can also be tilted in a variety of horizontal positions. Belt changing is explained in the manual and in the video below.

Downdraft table. Wiki page

This table generates over 3000 CFM of air movement. It is designed to draw any sawdust generated atop it down. It is simple. Use a hand power sander or other at its top. You may plug the tool into with its power switch.the outlet on the tables left side,