Now featuring ArmorGlide Technology, the Powermatic 1285T 12-Inch Jointer offers big capacity and performance in a machine loaded with features. A large center-mounted fence assembly adjusts easily by a rack and pinion system with ram lock. Preset stops on the fence body allow for fast angle set-up at 45° in and out, and a positive stop for perfect 90° angles.
The parallelogram design keeps the table in close proximity to the cutterhead for improved finish and allows for a fast depth of cut adjustment. This design also ensures the tables remain perfectly parallel even after years of tough duty. This model features a helical cutterhead.
Enhanced visibility:The dark surface reduces glare, so you can see where you're cutting better.
Rust resistant:Ditch the steel wool and never worry about rust again.
Low friction:Coated tables require 50% less force, so you get more control.
Maintenance-free:Get rid of the waxes and messy cleaning supplies, so you can do more of what you love.
Durable coating:ArmorGlide tables can withstand 250,000 passes without showing signs of wear.
Features
ArmorGlide Technology gives you a low-friction, industrial-grade coating on the work surface that is rust resistant, requires less maintenance, and gives you more control
Helical cutterhead features 42 two-sided carbide inserts for fast knife changes with no adjustments and a quiet, clean cut
Large 12" x 84" precision ground cast iron table surface for heavy-duty work
Parallelogram design ensures close table-to-cutterhead proximity and fast depth of cut adjustments
Rack and pinion adjustable cast iron fence assembly allows for smooth fence positioning without play
Table "lips" on both sides of cutterhead aid in noise reduction
Specifications
Style (Type)
Planer / Cutterhead Machine
Cutterhead Speed
5,000 RPM
Cutting Capacity (W × D)
11-3/4" × 3/4"
Motor Power
3 HP
Motor Voltage
230V
Number of Knives
44
Dust Port Outside Diameter
4"
Min. Dust Collection Required
800 CFM
Recommended Circuit Size
30 Amps
Video
What our Experts Think
Industrial Sanding Performance – Built for professional woodworking environments requiring consistent thickness control and high-quality surface finishes.
Powerful 20HP Motor System – Delivers strong, reliable sanding power for continuous production workloads.
37" Wide Sanding Capacity – Handles large panels, doors, tabletops, and oversized woodworking components with ease.
Automatic Thickness Control – Helps achieve precise, repeatable material thickness while reducing setup time.
Variable-Speed Feed Conveyor – Allows adjustment for different materials, sanding grits, and finishing requirements.
Pneumatic Belt Tracking System – Maintains smooth belt alignment, improves abrasive life, and supports consistent finishes.
Digital Thickness Readout – Provides quick monitoring and accurate adjustments for production-level accuracy.
Three-Motor Design – Separates sanding, feed, and table movement functions for smoother operation under heavy loads.
Professional Safety Features – Integrated braking system helps improve operator control during demanding applications.
Q&A
Q: What is the Powermatic 12" Parallelogram Jointer used for? A: This jointer is designed for flattening, straightening, and preparing wood surfaces for accurate woodworking projects.
Q: What is the benefit of the helical cutterhead? A: The helical cutterhead provides quieter operation, reduced tear-out, smoother cuts, and long-lasting carbide insert performance.
Q: What makes the parallelogram table design useful? A: The design maintains cutterhead alignment while allowing quick and precise depth adjustments.
Q: What is ArmorGlide technology? A: ArmorGlide creates a low-friction, rust-resistant surface that helps wood move smoothly across the table.
Q: Is the PM1-1791307T suitable for professional woodworking? A: Yes, its 3 HP motor, 12" capacity, and heavy-duty construction make it ideal for workshops and production use.
Q: What power requirements does this jointer need? A: It operates on 230V single-phase power with a 3 HP motor.
Q: What materials can this jointer handle? A: It is designed for jointing hardwoods, softwoods, and other compatible wood materials.
Q: Who is the Powermatic 12" Jointer ideal for? A: It is ideal for cabinetmakers, furniture builders, professional woodworkers, and serious woodworking shops.
Maintenance Tips
Clean dust, chips, and debris from the cutterhead, tables, and fence after each use.
Keep the ArmorGlide table surface clean and protected for smooth stock movement.
Inspect helical cutter inserts regularly and rotate or replace worn inserts as needed.
Check fence alignment and parallelogram table adjustments for accurate jointing.
Lubricate moving parts, slides, and adjustment mechanisms as recommended.
Remove resin buildup from cutterhead and surfaces to maintain cutting quality.
Keep dust collection ports clear for efficient airflow.
Inspect belts, bearings, and drive components for wear or damage.
Tighten bolts, handles, and hardware regularly for safe operation.
Store the jointer in a dry environment to help prevent rust and corrosion.
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