A Compatibility-First Guide to the Delta Drill Press Oscillating Spindle Sander Attachment

The idea is appealing: you already own a drill press, so why buy a whole separate sander when an attachment can turn the press into a spindle sander for smoothing curves and edges? For Delta owners in particular, the question comes up because Delta built a long line of presses and sanding accessories. The answer depends less on whether such an attachment exists and more on whether it fits your specific machine and whether a drill press can do the job well.

A spindle sander attachment puts a sanding drum in the chuck so the drill press can sand the edges of curved workpieces. A true oscillating spindle sander also moves the drum up and down as it spins, which spreads wear and leaves a smoother finish. The honest starting point is that most drill presses only spin, they do not oscillate, so an attachment usually gives you a stationary spindle sander, not an oscillating one.

Short answer: before buying, confirm the sanding drum’s arbor fits your Delta’s chuck, that your press runs at a speed suited to sanding, and that your table has a hole or insert to let the drum pass through the work. Match those and a drum sander attachment works for light edge sanding; expect a stationary sander, not a true oscillating one, unless the accessory itself adds the motion.

What the attachment can and cannot do

A sanding drum in the chuck will smooth the sawn edge of a curved part, and for many shops that is enough. It uses the press you already own and stores in a drawer.

What it usually cannot do is oscillate. Oscillation comes from a mechanism that raises and lowers the spindle, which most drill presses lack. Without it, the drum sands in one band and wears the abrasive unevenly, so you move the work up and down by hand to spread the wear. A Delta press manual, such as the one for the Delta 17-900, describes the machine’s spindle speeds, table clamp and raising handles, table bracket and alignment pin, and belt tension, all of which tell you whether your press can run at a sanding-friendly speed and whether the table supports drum sanding.

Check compatibility before you buy

• Arbor to chuck. The sanding drum’s arbor must fit your Delta’s chuck capacity and seat straight.
• Speed. Sanding drums have a suggested speed range. Check your press’s spindle speeds against it; too fast burns the work and the abrasive.
• Table opening. The drum needs to pass slightly below the work, so you want a table hole, a removable insert, or an auxiliary table with a clearance hole.
• Runout and rigidity. A worn spindle that wobbles shows up badly in a sanded edge, so a tight machine matters.

Drill press attachment versus a dedicated oscillating spindle sander

Against a dedicated oscillating spindle sander, the drill press attachment wins on cost and storage and loses on finish quality and abrasive life. The dedicated machine oscillates, has a table built with a drum opening and interchangeable inserts, and runs at the right speed out of the box. The attachment is a fine occasional-use compromise; it is not a replacement for frequent sanding.

Be honest about your volume. If you sand curves often, the dedicated tool is worth it. If it is now and then, the attachment earns its keep. You can compare drill press sanding drum kits against a standalone oscillating spindle sander to decide.

Setting it up so it sands cleanly

1. Confirm the drum arbor fits your chuck and seats straight, then tighten it fully.
2. Set the press to a speed within the drum’s suggested range.
3. Use a table with a clearance hole or an auxiliary top so the drum passes below the work.
4. Feed the work against the drum’s rotation and move it up and down by hand to spread wear.
5. Keep hands clear of the spinning drum and wear eye protection, in line with CCOHS and OSHA guidance for the machine.

Who should skip it

If you sand curved edges regularly or need a fine finish, buy a dedicated oscillating spindle sander. If you smooth the occasional curve and want to use the Delta press you already own, a drum sander attachment is a reasonable, low-cost option, as long as it fits and you accept a stationary sanding action.

Bottom line

A Delta drill press oscillating spindle sander attachment is really a drum-sanding accessory in most cases, useful for occasional edge sanding but rarely truly oscillating. Confirm the arbor fits your chuck, the speed suits sanding, and the table lets the drum pass, and it will serve light work well. For frequent or fine sanding, a dedicated machine is the honest choice.

• Most drill presses spin but do not oscillate, so expect a stationary sander.
• Match the drum arbor to your chuck and the drum’s speed range to your press.
• Use a table with a clearance hole and move the work by hand to spread wear.

FAQ

Can a Delta drill press be a real oscillating spindle sander? Usually not. Most drill presses spin but do not oscillate, so an attachment gives a stationary drum sander unless the accessory itself adds the up-and-down motion.

Will a sanding drum fit my Delta drill press? If the drum’s arbor fits your chuck capacity and seats straight, yes. Confirm it before buying.

What speed should I sand at? Within the sanding drum’s suggested range. Check your press’s spindle speeds, since too fast burns the work and the abrasive.

Do I need a special table? You need a hole, a removable insert, or an auxiliary table so the drum can pass slightly below the work.

Why does my sanded edge look banded? Without oscillation the drum sands one band. Move the work up and down by hand to spread the wear and smooth the finish.

Attachment or a dedicated sander? Attachment for occasional edge sanding on a press you own; a dedicated oscillating spindle sander for frequent or fine work.

References

• Delta 17-900 Drill Press Manual: https://powertool.manualsonline.com/manuals/mfg/delta/17900.html
• WEN Drill Press FAQs: https://wenproducts.com/pages/drill-press-faqs
• OSHA Woodworking eTool, Drill Press: https://www.osha.gov/etools/woodworking/production/machines-tools/drill-press
• CCOHS, Metalworking Machines - Drill Presses: https://www.ccohs.ca/oshanswers/safety_haz/metalworking/drillpresses.html