Wood Planers: A Complete Guide for Woodworkers and DIYers
Introduction
A wood planer, also called a thickness planer, is a woodworking machine designed to create uniform board thickness and smooth surfaces. By shaving material from the top face of a board, a planer ensures that both faces are parallel. Together with a jointer, it’s one of the most important tools for preparing rough lumber for fine woodworking. From furniture makers to hobbyists, planers save time and improve accuracy in the shop.
History & Development
The planer has its roots in hand planes used for centuries to flatten boards. In the 19th century, large cast-iron planers powered by belts became staples in sawmills and factories. Early 20th-century manufacturers like Oliver, Yates-American, and Crescent built massive industrial planers. By the mid-20th century, companies such as Delta and Craftsman introduced smaller benchtop planers for home shops. The 1980s and 1990s saw the rise of portable thickness planers, making the tool accessible to hobbyists. Today’s planers include features such as helical cutterheads, digital readouts, and improved dust collection.
Types of Wood Planers
- Benchtop/Portable Planers – Compact, affordable, and ideal for hobbyists; usually handle boards up to 12–13 inches wide.
- Stationary Planers – Heavier, floor-standing machines (15–20 inches wide) for professional shops.
- Industrial Planers – Massive cast-iron machines used in factories and mills for continuous production.
- Jointer-Planer Combos – Common in Europe; combine two machines into one space-saving unit.
- CNC Planers – Specialized digital planers used in production environments.
Key Components
- Infeed & Outfeed Rollers – Feed stock smoothly through the cutterhead.
- Cutterhead – Contains knives or carbide inserts to remove material.
- Table/Bed – Adjustable, supports the workpiece as it passes through.
- Motor – Powers the cutterhead and feed rollers; ranges from 1.5 HP to 10+ HP.
- Depth Adjustment – Controls how much material is removed per pass.
- Dust Collection Port – Essential for managing large volumes of chips.
Safety Features & Innovations
- Helical Cutterheads – Quieter, smoother, and safer than straight knives.
- Chip Breakers & Pressure Bars – Reduce tear-out and improve finish.
- Magnetic Switches – Prevent accidental restarts.
- Anti-Kickback Fingers – Prevent boards from being thrown backward.
- Digital Thickness Gauges – Allow precise depth adjustments.
Uses & Applications
Planers are indispensable for:
- Thicknessing Boards – Ensuring consistent board thickness.
- Surface Smoothing – Creating smooth, parallel faces.
- Dimensioning Rough Lumber – Preparing stock for furniture and cabinetry.
- Resurfacing Reclaimed Wood – Removing weathered or damaged surfaces.
- Paired with a Jointer – Ensures boards are flat, square, and ready for joinery.
Manufacturers: Past & Present
Vintage Planer Manufacturers (Early to Mid-20th Century)
- Oliver Machinery (MI, 1890s onward) – Built large industrial planers prized for durability.
- Yates-American (WI, early 1900s–present) – Produced massive cast-iron planers for mills and schools.
- Crescent Machine Company (OH, 1800s–1940s) – Known for heavy-duty woodworking machinery, including planers.
- Porter Machine Company (MI, early 1900s) – Specializing in jointers and planers for professional shops.
- Walker-Turner (1927–1950s, NJ) – Manufactured medium-sized planers for schools and light industry.
- Craftsman (Sears, Mid-1900s) – Affordable stationary planers that introduced the tool to hobbyists.
- Delta Specialty Company (Founded 1919, WI) – Produced smaller planers for schools and home workshops.
Modern Planer Manufacturers (Past 50 Years)
- DeWalt – Famous for the DW735, one of the most popular portable planers.
- Makita – Produces portable planers known for durability and precision.
- Jet Tools – Offers both benchtop and stationary planers for hobbyists and small shops.
- Powermatic – High-end stationary planers with helical cutterheads.
- Grizzly Industrial – Affordable planers up to 20 inches wide.
- Rikon – Known for reliable benchtop planers.
- Laguna Tools – Premium stationary planers with advanced features.
- SCM Group & Felder (Europe) – Manufacturers of industrial and combination jointer/planer machines.
Buying Guide
Key factors to consider before purchasing a planer:
- Capacity – Board width and depth of cut per pass.
- Power – More horsepower for dense hardwoods and wide boards.
- Cutterhead Type – Helical heads offer smoother cuts and longer knife life.
- Feed Speed – Adjustable speeds improve finish on different woods.
- Dust Collection – Planers generate a large volume of chips.
- Budget – Benchtop planers cost a few hundred dollars; industrial machines cost several thousand.
Comparison Snapshot:
| Type | Best For | Capacity | Price Range |
|---|---|---|---|
| Benchtop | Hobbyists, small shops | 12–13″ | $300–$700 |
| Stationary | Small pro shops | 15–20″ | $1,500–$4,000 |
| Industrial | Factories, mills | 20–36″ | $5,000–$20,000+ |
Maintenance & Care
- Keep knives or carbide inserts sharp.
- Clean and wax the bed for smooth feeding.
- Check and adjust roller pressure.
- Inspect drive belts and gears.
- Keep dust collection working efficiently.
Safety Tips for Users
- Never plane stock shorter than manufacturer’s minimum (usually 12″).
- Do not remove more than 1/16″ per pass on wide boards.
- Avoid planing stock with loose knots or nails.
- Always use dust collection or a chip hood.
- Stand to the side in case of kickback.
Accessories
- Helical Cutterhead Upgrades – Quieter, cleaner cuts.
- Infeed/Outfeed Tables – Reduce snipe (end gouging).
- Digital Readouts – Improve accuracy of thickness settings.
- Planer Jigs – For thin stock or figured wood.
- Dust Collection Systems – Essential for clean operation.
FAQs
Q1: What’s the difference between a jointer and a planer?
A jointer flattens one face and squares one edge; a planer makes the opposite face parallel, ensuring uniform thickness.
Q2: Can I use a planer without a jointer?
You can, but boards may come out parallel yet still warped. Best results come from using both.
Q3: Why does my planer cause tear-out?
This often happens with figured grain; a helical cutterhead helps reduce it.
Q4: What is “snipe”?
Snipe is a slight dip at the beginning or end of a board, often caused by roller or bed misalignment.
Q5: How much space do I need for a planer?
At least 3–4 feet on both infeed and outfeed sides for safe material handling.
Conclusion
The wood planer is an indispensable machine for preparing lumber, ensuring consistent thickness and smooth surfaces. From the cast-iron Oliver and Crescent planers of the early 20th century to today’s portable DeWalt DW735 and high-end SCM combination machines, planers have revolutionized woodworking. Whether you’re dimensioning rough lumber or resurfacing reclaimed boards, a planer is essential for accuracy and efficiency in the workshop.
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