The Supermax SUPMX-71938-D 19-38 Drum Sander with Open Stand is a stationary woodworking drum sander built for flattening, dimensioning, and finish sanding solid wood panels, glue-ups, and thin stock. This is a drum sander designed for woodworking surface sanding and thickness control. Model Number: SUPMX-71938-D. If you need more consistent results than a handheld sander can give you, but you do not want to jump to a full wide-belt machine, this is the size and format that makes sense for a serious shop.

The big selling point here is capacity. You get 19 inches of sanding width in a single pass, and up to 38 inches in two passes. That matters when you are working on table tops, cabinet panels, cutting boards, slab prep, or glued-up work that is too wide for smaller benchtop sanders. Supermax backs that up with a 22-inch conveyor table, which gives better support for wider workpieces and helps keep stock tracking more predictably as it moves through the machine.

Where this machine separates itself from lighter-duty options is control under load. The built-in INTELLISAND technology automatically adjusts conveyor speed based on resistance. In plain terms, when grain direction changes or density varies across the board, the machine helps prevent the kind of burning, gouging, and inconsistent feed marks that cost you time in cleanup sanding. That also improves abrasive life and makes the machine more forgiving when you are dimensioning stock rather than just doing a final light pass.

The drive system is built around a 110V, 20-Amp, totally enclosed fan-cooled 1-3/4 horsepower motor that spins the sanding drum at 1,740 RPM, paired with a variable-speed conveyor rated from 0 to 10 feet per minute. Those numbers matter because they give you a useful mix of removal rate and finish control. Slow the conveyor down when you need more cut. Speed it up when you are making lighter finish passes or trying to keep production moving.

Supermax also put real effort into alignment and height adjustment, which are the two areas that can make a drum sander either easy to live with or a constant headache. The simple conveyor alignment setup uses one nut to bring the conveyor parallel to the sanding head, and the indexed alignment setting helps when switching between narrow stock and wider material over 19 inches. The height adjustment system uses a thrust bearing and locking arrangement that keeps the drum from drifting out of position while sanding, so you are not fighting backlash or slop when dialing in thickness.

For surface quality, the reinforced precision-flattened steel conveyor bed is a major part of the story. Supermax states flatness to less than 0.010 inch across the width of the sander, with four steel cross sections reinforcing the bed to limit flex. Add in adjustable tension rollers to reduce snipe, and you have a machine designed to keep long boards and panel work more uniform from front edge to back edge.

Dust collection and abrasive management are also handled the right way. The dust cover is formed to the shape of the drum for better extraction efficiency, and it uses a 4-inch vacuum port. The metal cover is designed to maximize airflow, which matters on a machine that can generate a lot of fine dust fast. The self-cooling drum helps manage heat, and the patented abrasive attachment system keeps wraps tensioned correctly to reduce loose abrasive and overlap. That means less fuss during abrasive changes and more reliable sanding once you are running stock through it.

The Supermax SUPMX-71938-D 19-38 Drum Sander with Open Stand makes the most sense for cabinet shops, furniture builders, custom woodworking shops, school shops, and serious home woodworkers who need repeatable panel sanding without moving up to industrial wide-belt pricing. If your work includes glue-ups, end-grain boards, face frames, thin stock, or figured lumber that needs controlled sanding, this machine earns its floor space.

One of the smarter drum sander upgrades for a real woodworking shop

The Supermax SUPMX-71938-D 19-38 Drum Sander with Open Stand gives you the capacity and feed control that make wide-panel sanding a lot less frustrating.

• Who it's for: Woodworkers, cabinet shops, furniture makers, and serious home shops that need to flatten and finish sand panels, glue-ups, and thin stock with better consistency.
• Why it stands out: INTELLISAND is the feature that matters most here, because it helps the machine react to load instead of letting the workpiece pay the price. The wide capacity, rigid conveyor bed, and easy alignment system seal the deal.
• Worth knowing: This is a 110V machine, but it still wants a 20-amp circuit. And like any drum sander, it works best with controlled passes, not trying to hog off too much material at once.

• What is the maximum sanding width? It sands up to 19 inches wide in one pass, or up to 38 inches wide in two passes.
• What thickness range can it handle? The machine handles stock from 1/32 inch up to 4 inches thick.
• Does it have variable feed speed? Yes. The conveyor speed is variable from 0 to 10 feet per minute, and INTELLISAND automatically adjusts based on load.
• What size dust collection connection does it use? It uses a 4-inch vacuum port.