Radial Arm Saws: A Complete Guide for Woodworkers and DIYers
Introduction
A radial arm saw is a versatile woodworking machine where the motor and blade are mounted on a sliding arm above the work table. Originally designed for crosscutting lumber, the radial arm saw can also perform ripping, miter cuts, bevels, dadoes, rabbets, and even shaping operations with the right attachments. Once the centerpiece of many shops, its role has shifted with the rise of miter saws and table saws, but the radial arm saw remains a powerful, flexible tool for woodworking enthusiasts and traditionalists.
History & Development
The radial arm saw was invented in the 1920s by Raymond DeWalt, who introduced it as the “Wonder-Worker.” Its ability to replace multiple machines made it a revolution in woodworking. From the 1930s through the 1970s, radial arm saws were produced by companies like DeWalt, Delta, and Craftsman, becoming a fixture in both professional and home shops. By the late 20th century, however, the compound miter saw began to replace it for crosscutting tasks, while the table saw remained dominant for ripping. Today, radial arm saws are less common but still valued by woodworkers who appreciate their flexibility and cutting capacity.
Types of Radial Arm Saws
- Standard Radial Arm Saws – Designed primarily for crosscutting boards.
- Tilting-Head Models – Allow bevel and compound angle cuts.
- Heavy-Duty Industrial Radial Arm Saws – Large, powerful machines for continuous production.
- Multi-Function Saws – Outfitted with attachments for dadoing, molding, and sanding.
Key Components
- Radial Arm – Extends over the table, guiding the motor and blade.
- Motor & Blade Assembly – Mounted on a carriage that slides along the arm.
- Carriage & Bearings – Allow smooth movement of the blade during cuts.
- Column & Yoke – Support the radial arm and allow rotation for angled cuts.
- Work Table – Flat surface, often with replaceable inserts.
- Fence – Guides material for square and accurate cuts.
Safety Features & Innovations
- Blade Guards – Cover the blade for operator protection.
- Anti-Kickback Devices – Reduce risks when ripping lumber.
- Positive Stops – For accurate angle and bevel settings.
- Electric Brakes – Quickly stop the blade after shutoff.
- Dust Collection Ports – Improve visibility and safety.
Uses & Applications
Radial arm saws are versatile machines used for:
- Crosscutting – Cutting boards to length with precision.
- Miter & Bevel Cuts – Creating angled and compound cuts.
- Ripping – Cutting boards to width (though less common today).
- Dadoes & Rabbets – With dado blade sets.
- Molding & Shaping – Using special attachments.
- Repetitive Cuts – Excellent for production runs with stop blocks.
Manufacturers: Past & Present
Vintage Radial Arm Saw Manufacturers (Early to Mid-20th Century)
- DeWalt (Founded 1924, PA) – Inventor of the radial arm saw and leading manufacturer for decades.
- Delta Specialty Company (Founded 1919, WI) – Produced radial arm saws under Rockwell and later Delta brands.
- Craftsman (Sears, Mid-1900s) – Made the tool widely accessible to homeowners and hobbyists.
- Walker-Turner (1927–1950s, NJ) – Built high-quality saws later acquired by Rockwell.
- Oliver Machinery (MI, 1890s onward) – Produced heavy-duty saws for industrial shops.
Modern Radial Arm Saw Manufacturers (Past 50 Years)
- Original Saw Company (MN, Founded 1990s) – Revived the classic DeWalt designs for industrial use.
- DeWalt – Still produces some radial arm saws for limited markets, though no longer a major focus.
- Graule (Germany) – Manufactures industrial crosscut saws similar in function to radial arm saws.
- Omga (Italy) – Produces precision radial arm saws for professional woodworking and metalworking.
- Baileigh Industrial – Offers radial arm saws for heavy-duty applications.
Buying Guide
Before buying a radial arm saw, consider:
- Capacity – Commonly 10–14″ blades, with larger models handling wide stock.
- Motor Power – More horsepower for ripping and dado cuts.
- Accuracy & Adjustability – Check for solid stops and smooth movement.
- Table Size – Larger tables support bigger workpieces.
- Intended Use – For crosscutting only, a modern miter saw may be better; for multi-tasking, a radial arm saw shines.
- Budget – Used saws can be found for under $300; new industrial models cost $2,000–$5,000+.
Comparison Snapshot:
| Type | Best For | Price Range |
|---|---|---|
| Hobbyist Models | DIY, light-duty | $200–$800 (used market) |
| Mid-Size Models | Cabinet shops | $1,000–$2,500 |
| Industrial Models | Production, factories | $3,000–$5,000+ |
Maintenance & Care
- Keep bearings and slides clean and lubricated.
- Check blade alignment regularly.
- Replace worn table inserts.
- Inspect electrical systems for safety.
- Keep dust collection running efficiently.
Safety Tips for Users
- Always pull the blade slowly and steadily through the workpiece.
- Never cut freehand—always use the fence.
- Stand to the side of the cut to avoid kickback.
- Use the correct blade for crosscutting (avoid aggressive ripping blades).
- Wear safety glasses, hearing protection, and dust masks.
Accessories
- Dado Blade Sets – For dadoes and rabbets.
- Molding Heads – Cut decorative profiles.
- Table Extensions & Fences – Improve accuracy and handling.
- Clamping Jigs – Secure workpieces for repetitive cuts.
FAQs
Q1: Why aren’t radial arm saws as common today?
They were largely replaced by compound miter saws and table saws, which are safer and easier for most tasks.
Q2: Can a radial arm saw still be useful in modern shops?
Yes—for crosscutting wide stock, dado cuts, and versatile setups, they remain valuable.
Q3: Are radial arm saws safe?
Yes, when properly maintained and used carefully. Poor technique and dull blades increase risks.
Q4: What size blade is most common?
10–12″ is standard for most woodworking shops; industrial models may use 14–20″.
Q5: Can I buy a new radial arm saw today?
Yes, from companies like Original Saw Company and Omga, though most options are industrial.
Conclusion
The radial arm saw is a legendary woodworking machine, once the centerpiece of workshops worldwide. From the pioneering DeWalt “Wonder-Worker” of the 1920s to the heavy-duty Oliver and Craftsman saws of the mid-20th century, it shaped generations of woodworkers. Though largely supplanted by table and miter saws, modern industrial models from Original Saw and Omga keep the tradition alive. For woodworkers who value versatility and cutting capacity, the radial arm saw remains a powerful and timeless tool.
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A Radial Arm Saw is basically a circular saw mounted on a horizontal arm that can slide from front to back. It is used mostly for cross cutting wood, however, on most radial arm saws, the saw or the “head” can be pivoted 90 degrees so that it can be used to rip wood with the grain.
DeWalt 790 Radial Arm Saw
The saw head can also be tilted to cut bevels and the radial arm can be pivoted to cut miters. The cradle that carries the saw head or motor under the horizontal arm is known as the yoke.
The radial arm saw was invented by Ray De Walt in 1923. De Walt was the founder of DeWalt Tool Co. and one of the premiere manufactures of quality radial arm saws.
The radial arm saw is typically used for cutting long pieces of stock to length but it can also be adapted to perform operations found on many typical stationary woodworking tools including the table saw, disc or drum sander, shaper, and miter saw.
About the only cut it can’t make is a curved cut like that done on a band saw or scroll saw.
Radial arm saws could be fitted with dado heads, molding cutters, and router bits for making a variety of cuts and joints. Some could also be fitted with disc and drum sanders making it a very useful tool in the shop. Because of it’s versatility it was one of the favorite tools of the home woodworker.
The DeWalt company stopped manufacturing radial arm saws for the US market in 1985. There are still many radial arm saws in operation, however, it has been largely replaced in the industry by smaller and more accurate miter saws.
Vintage Radial Arm Saws
Craftsman Radial Arm Saws
DeWalt Radial Arm Saws
DeWalt Wonder Worker – The original radial arm saw
DeWalt 730 10″ Radial Arm Saw
DeWalt 740 10″ Radial Arm Saw PowerShop
DeWalt 790 12″ Deluxe Radial Arm Saw
DeWalt 1030 Radial Arm Saw
