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SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw Circular Saw

SKIL 16-5/16 In. Magnesium Worm Drive Skilsaw Circular Saw

By SKIL · Circular Saws · Power Tools · More from SKIL

  • 15 A Dual-Field motor
  • 16-5/16 in. blade
  • 6-1/4 in. cutting capacity at 90 deg
  • Bevel 0-45 deg
  • 2,500 RPM no-load speed

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Problems, parts and running costs

Summary

A 15-amp corded worm drive circular saw with a 16-5/16-inch blade that cuts 6x timber in one pass, built for professional timber framing. It weighs 27.3 lbs, so plan on two-handed use and a stand, not general carpentry.

Strengths

  • Cuts 6x timber in a single pass with a 6-1/4 in. depth at 90°.
  • Magnesium housing and die-cast footplate keep weight to 27.3 lbs for this blade size.
  • Electric brake stops the large blade quickly.
  • Left-side blade gives right-handed operators a clear sight line.
  • Saw stand included for staging and safe handling.

Weaknesses

  • 27.3 lbs causes fatigue during prolonged use.
  • Niche tool with little value outside timber framing and heavy log work.
  • Replacement 16-5/16 in. blades are costly.
  • 2,500 RPM is slower than standard 7-1/4 in. saws, trading speed for torque.
  • Requires two-handed operation and a stand on jobsites.

Verified specifications

ModelSPT70V-11 (Super Sawsquatch).
Power15-amp, 120 V corded electric.
MotorDual-Field motor with brass worm drive gearing.
No-load speed2,500 RPM.
Blade16-5/16 in. (414 mm), 1 in. (25.4 mm) arbor.
Cutting depth at 90°6-1/4 in. (156 mm).
Cutting depth at 45° bevel4-5/16 in. (109 mm).
Bevel capacity0° to 45°.
Blade locationleft side.
Electric brakeyes.
Spindle lockyes.
Cord length10 ft.
Weight27.3 lbs.
Dimensions24.5 × 17.5 in.
Constructionmagnesium housing and die-cast footplate.
Includedsaw, 16-5/16 in. blade, saw stand, multifunction wrench.
Warranty1-year limited for professional use plus a 180-day money-back guarantee.
Full research notes and sources

Cutting capacity and power

The 16-5/16 in. blade and 6-1/4 in. depth at 90° let you cut through 6x lumber in one pass. The 15-amp Dual-Field motor and brass worm drive gearing deliver high torque at 2,500 RPM, lower than a standard sidewinder but tuned for massive timber. The electric brake matters here: a blade this size carries a lot of rotating mass.

Weight and handling

At 27.3 lbs it is light for the class but still heavy. Expect two-handed operation and fatigue on long sessions. The included saw stand is how you stage and handle the saw safely.

Which model this is

This page covers the SKIL SPT70V-11, sold as the Super Sawsquatch, a 120 V corded 16-5/16 in. magnesium worm drive saw. Amazon listing ASIN B077SJGDWS. Do not confuse it with 7-1/4 in. sidewinders, standard worm drives, or concrete saws like Medusaw.

Running costs and upkeep

Ownership means replacing 16-5/16 in. carbide blades, changing worm drive gear oil and inspecting carbon brushes. Parts and explosion diagrams are available from SKIL, with authorized service centers for motor and gear work. Warranty is 1 year limited for professional use plus a 180-day money-back guarantee.

Is it worth it?

Standard retail price across Acme Tools, ToolNut, Lowe’s and SKIL direct is $769.99. At that price it is an industrial tool for timber framers and log home builders; the single-pass cut through 6x material saves labor that justifies the cost for that work. For general contractors the return is low given the size, weight and blade cost.

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