When choosing a disc and belt sander, be sure to take into account a few important factors. You’ll want to have the right amperage for the belt speed. Hand positioning is important, too. You should choose a sander that allows you to sand in a variety of positions to accommodate different material sizes and your own personal sanding style.
My recommendation for a good, low-cost combination disc and belt sander is the Central Machinery 6” x 48” Belt and 9” Disc Combination Sander (SKU 6852). This combination disc and belt sander is one of the best in its price range, providing great value for the money. It uses a 1 HP 120 volt 12.8 amp motor to make sanding jobs easier. Its adjustable belt sander sands inside curves, outside curves and flat workpieces.
The disc sander is ideal for working with smaller workpieces. Its 2-position table tilts from 0 to 45 degrees and can be repositioned for disc or belt use. While the motor runs at 3450 RPM, the disc speed runs at 1720. The belt speed runs at 1280 RPM. The belt sander takes a 6" W x 48" L sanding belt while the disc sander takes a 9-inch diameter abrasive disc. The sander comes with both an 80-grit sanding belt and an 80-grit sanding disc. Replacement belts and discs are generally available online or at your local Harbor Freight store. (You can find other great stationary sanders at Harbor Freight too.)
This Central Machinery combo disc & belt sander offers a miter gauge, cast iron base, floor stand and easy tension adjustment. Make sure you clean it daily, as the sanding belt and disc could become dull if clogged with wood particles. A dull belt or disc rubs on your material instead of cutting it, leading to increased friction, higher temperatures and, potentially, a burned workpiece. Just get a soft brush, cloth or vacuum and remove all the debris. Apply some lightweight machine oil to all moving parts for improved lubrication. You can also get this great sanding belt cleaner at harbor freight.
It’s hard to beat the bargain Harbor Freight offers with this unit. With a 90-day warranty and low price tag, competing models are few and far between. For the money, this combination sander is a worthy addition to any handyman’s workshop.