The KARTOP is the best compact saw because it is the only one here that can cut through a 2x4 in a single pass. Its 2-3/16 inch depth at 90 degrees clears a nominal 1-1/2 inch board with room to spare, and the 45 degree depth of 1-7/16 inches still handles a 1x board. That capacity comes from a 5-1/2 inch blade, a size that adds about half an inch of depth over the 4-1/2 inch saws without adding much weight.
A brushless motor turns at 7,000 rpm with no load, and brushless designs waste less energy as heat, so the two 4,000 mAh batteries go farther than the same packs in a brushed saw. At 4.19 pounds it is light enough for one-handed trim cuts. Against the SKIL PWRCore 12, which is a bare tool, the KARTOP gives you batteries and a charger in the box, so the starting cost is easier to judge.
Because it comes from a small brand, spares and service are uncertain, so treat the batteries as consumables. The high speed gives clean cuts in thin stock but can burn hardwood, so keep the saw moving and use the included blade that matches the material. Always clamp the work and let the blade stop before setting the saw down.
What works
- 2-3/16 inch depth clears a 2x4 in one pass
- Brushless motor stretches battery life
- Two 4.0 Ah-class batteries included
- Light at 4.19 lb for one-handed cuts
Watch out for
- Small brand means uncertain spare batteries
- 7,000 rpm can burn dense hardwood
- 45 degree depth drops to 1-7/16 inches
Spec sheet
- Blade
- 5-1/2 inch, three blades included
- Motor
- Brushless, 7,000 rpm no-load
- Depth at 90 degrees
- 2-3/16 inches
- Depth at 45 degrees
- 1-7/16 inches
- Weight
- 4.19 lb
- Batteries
- Two 21V 4,000 mAh





