Worm drive saws have become a popular choice for many DIYers and professionals. But are they really worth the extra cost compared to a standard circular saw? In this article, we’ll examine the pros and cons of worm drive saws to help you decide if investing in one is the right choice for your needs.
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What is a worm drive saw?
A worm drive saw is a type of circular saw that has the motor oriented perpendicular to the blade arbor. This unique gearing system helps transfer power from the motor to the blade through a worm gear and worm wheel.
The motor sits behind or above the blade, unlike a standard sidewinder circular saw where the motor is beside the blade. The worm drive changes the direction of rotation from the motor output to turn the blade.
Advantages of worm drive saws
Worm drive saws offer some key benefits that make them a favorite for professionals:
More powerful cutting: The gearing in a worm drive saw allows it to have significantly more torque and cutting power than a comparable sidewinder saw. This makes worm drive saws ideal for cutting through dense, thick stock like hardwoods.
Reduced kickback: The position of the blade helps reduce kickback since it doesn’t eject sawdust back toward the user as aggressively. This improves safety and control.
Better line of sight: With the blade at the front edge of the saw, users have an unobstructed view of the cut line when cutting. This aids accuracy and precision.
More compact size: Since the motor sits behind or above the blade arbor, worm drive saws have a more compact body. This gives them better balance and makes them easier to control.
Potential disadvantages of worm drive saws
While worm drive saws have some clear advantages, there are also a few potential downsides to consider:
Increased weight: The all-metal gearing required for the worm drive makes these saws significantly heavier than plastic-bodied sidewinders. Expect weights from 12-14 lbs versus 7-9 lbs for a sidewinder.
Higher cost: The complex gearing system also makes worm drive saws more expensive, often 2-3 times the price of a basic circular saw.
Increased maintenance: The gears will need more frequent lubrication and potentially repairs or replacement over time. Proper maintenance is key for longevity.
Louder operation: All that metal gearing churning together means worm drive saws tend to be much louder in use than other circular saw options. Hearing protection is a must.
Key factors to consider
When deciding if a worm drive saw is worth the investment for your needs, there are a few key factors to weigh:
What will you be cutting?
If you’ll primarily be working with thinner stock or softwoods, a worm drive saw is likely overkill. But if you routinely cut thick hardwoods, engineered lumber, or even make cement cuts, the extra power of a worm drive saw makes it an excellent fit.
Consider how often you need to cut dense or thick materials when deciding if a worm drive saw is necessary.
What features do you need?
Think about specific features that will aid the cutting tasks you take on. If having maximum ripping capacity for wide stock is important, worm drive saws often provide more depth. Or if you cut a lot of angled materials, a model with an adjustable foot can add stability.
Consider if added features of worm drive saws like maximum depths of cut suit your workload.
What is your budget?
Worm drive saws range in price from about $150 on the very low end to $400+ for pro-grade models. Consider how much you can invest in your circular saw purchase.
You may want to start with an affordable worm drive option to test it out before upgrading to a more heavy-duty professional model.
Recommendations
Based on their excellent balance of power, features, and price, here are two of our top recommended worm drive saws:
Makita 5477NB
Price: $$
Power: 15 AMP
Depth of Cut: 2-9/16″ at 90°, 1-11/16″ at 45°
Key Features:
- Weighs only 13.3 lbs for easier handling
- Shoe bevels to 50° with positive stops at 22.5° and 45°
- Constant speed control maintains RPMs under load
- External brush access for easier maintenance
With best-in-class power, reasonable weight, and excellent cutting capacity, the Makita 5477NB is one of the top choices for those seeking a professional-grade worm drive saw.
SKILSAW SPT77WML-01
Price: $
Power: 15 AMP
Depth of Cut: 2-9/16″ at 90°, 2-1/4″ at 45°
Key Features:
- Lightweight magnesium housing reduces weight to 11.6 lbs
- 53° bevel capacity with positive stops at 45° and 22.5°
- Onboard blade wrench storage for convenience
- Cut-ready depth system for quick and easy depth adjustments
For buyers looking for an affordable but capable worm drive saw, the SKILSAW SPT77WML-01 is a great choice. It balances light weight and maximized cutting capacity with useful features.
When worm drive saws make sense
Worm drive saws are ideal for anyone working frequently with thick, dense stock. The extra torque and cutting power pays off when ripping hardwoods, manufactured timbers, or making angled cuts. Professional carpenters, framers, and construction workers are most likely to benefit from investing in a worm drive saw.
Occasional DIYers may find the cost hard to justify if they don’t routinely work with thicker materials. But a worm drive saw can be a sensible choice for a committed hobbyist taking on ambitious home renovation projects as well.
Considerations when buying
If you’ve decided a worm drive saw is the right move, keep these tips in mind when selecting a model:
– Choose an appropriate amperage for your needs – 15AMP motors provide the best power for dense materials
– Look for anti-vibration handles and padding to reduce fatigue
– Make sure bevel and depth adjustments are easy to access and use
– Look for a saw with an automatic braking system for improved safety
– Check that dust collection is effective to aid visibility and air quality
– See if replacement brushes and gear oil are readily available
– Opt for metal guards over plastic ones for increased durability
– Pay close attention to cord length – a longer cord aids maneuverability
– Make sure the saw feels balanced and comfortable in your hand at full extension
Using and maintaining a worm drive saw
Once you’ve purchased a worm drive saw, proper use and maintenance are key to maximize the tool’s longevity. Here are some top tips:
– Always use two hands when operating the saw – don’t try one-handed cuts
– Check gear oil levels regularly and top up as needed
– Clean the blade regularly, especially when making finishing cuts
– Maintain proper blade tightness – loose blades are dangerous
– Use only saw blades designed for your specific saw’s RPMs
– Clear debris regularly from the worm gear case to prevent overheating
– Lubricate the drive shaft bearings with gear oil periodically
– Inspect brushes regularly and replace when worn down
– Check the motor ventilation ports are unobstructed before use
– Store saw with blade covers on in a dry location
– Avoid forcing the saw during cuts – ease into dense materials
– Ensure the blade guard is working properly before each use
Safety tips
Worm drive saws are very powerful tools that require caution and proper handling to operate safely. Follow these tips to help prevent accidents:
– Always wear eye and hearing protection when using the saw
– Make sure the material you are cutting is well-supported and secured
– Avoid awkward body positions – stand stable with sure footing
– Keep hands away from the blade path and employ anti-kickback devices
– Don’t try to remove sawdust or cut-offs while the blade is moving
– Ensure the saw is unplugged when changing the blade or servicing
– Maintain the blade guard in good working order and ensure it retracts fully after each cut
– Wait for the blade to come to a complete stop before setting the saw down after use
– Make sure cord insulation is intact and avoid cutting power cords
– Don’t use the worm drive saw over head or on unstable surfaces
– Allow the saw motor to reach full speed before starting cuts
– Keep the saw’s air vents free of dust and debris to avoid motor overheating
FAQs
Are worm drive saws obsolete?
No, worm drive saws are still very popular, especially among professionals and serious DIYers. The gearing design provides torque and cutting power unmatched by typical circular saws. While some modern circular saws have taken design cues from worm drives, true worm drive saws remain highly effective and relevant tools.
Are worm drive saws left or right handed?
Most worm drive saws are designed for right-handed users, with the motor positioned on the left side of the blade. However, some brands offer left-sided versions as well. If you are left-handed, look for a lefty worm drive model specifically or adapt your grip to a right-handed version.
Can you sharpen a worm drive saw blade?
Yes, as long as the blade is removable it can be sharpened using specialized sharpening equipment. This helps restore the cutting performance of used and dull blades. Always follow the tooth count recommendations from the saw manufacturer when sharpening to maintain proper cutting action.
What can you not cut with a worm drive saw?
Worm drive saws are very versatile, but avoid cutting non-standard materials like masonry, tile, glass, plastics or metals. Use a specialized saw designed for those materials instead. Also avoid cutting awkward short or narrow pieces that require fingers near the blade path.
Why are worm drive saws so expensive?
The all-metal gearing system required for the unique 90-degree motor orientation makes worm drive saws more costly to manufacture. The materials and machining are more intensive compared to standard circular saws. But the worm drive design also provides much higher performance.
The bottom line
Worm drive saws require a significant investment, but deliver unmatched power and torque for professionals routinely working with dense hardwoods and other thick materials. If you don’t need the brawn of a worm drive, save money with a lighter and more affordable sidewinder model instead. But for serious cutting needs, DIYers or contractors working with thick stock on a regular basis will benefit from the proven efficiency of worm drive saws.
I hope this detailed overview has helped you better understand the pros, cons, features, and recommendations for worm drive saws. Let me know if you have any other questions!