AUGER BIT VS SPADE BIT
                     AUGER BIT VS SPADE BIT
WHAT IS AN AUGER BIT?
Auger Bits feature a single-spur leading edge, making it 
possible to drill clean holes in dense, dry lumber with 
ease. These bits even include a little corkscrewed tip 
that eliminates the necessity to use pressure while 
drilling.
WHAT IS A SPADE BIT?
Spade Bits are sometimes referred to as "paddle bits" 
because they appear as a paddle. Its shape is a bit 
distinctive due to its squared, flat head. This head is 
typically sized such that any hole made thereupon will 
match the head's width
COMPARISON BETWEEN
 AUGER BIT & SPADE BIT
• BY APPLICATION
• Auger bits generally drill cleaner 
holes with smoother sides and fewer 
splintering. They're commonly used 
for general wood drilling in 
construction, woodworking in 
gardening, and many other areas.
• Spade bits drill holes with rougher 
sides and are therefore utilized in 
areas that will be covered. 
BY SHAPE & DESIGN
• Auger bit is a spiral-shaped bit with a threaded tip at the front and 
two chisels at each tip's end. These chisels are liable for shaving the 
wood.
• Spade drill bits are flat. They need a comfortable design shaped like 
a spade or paddle with two sharp lips at each end and a pointy non-
threaded guidance tip.
BY USE
• Auger bits require downward pressure when drilling, making it more 
comfortable. The threaded tip pulls the bit downwards and creates a 
self-driving mechanism, which will be in no time, even with just the 
drill's load pushing down.
• It is not an equivalent case for spade bits. Their tips could be sharp but 
aren't threaded, and thus, they don't self-drive. As a result, you would 
like to use more downward force for quick digging.
BY CUTTING ABILITY
• Due to the spiral design, auger bits are suitable for precision drilling. 
It suggests they will dig a hole with an equivalent width because of 
the tool when cutting straight or at an angle.
• Spade bits are suitable for customizing the form and size of the 
drilled hole. The tool can be easily angled at the start or as you drill, 
which allows you to make a tapered hole or a smaller/larger hole than 
the width of the flat blade.
BY DRILLING DEPTH
• Auger bits in drill quickly and very deep. The drill's depth is due to 
the threaded tip, which effortlessly self-drives the tool to very deep 
depths. 
• As for spade bits, they're not recommended for drilling at deep 
depths because you'll need to apply tons of downward pressure. On 
the bright side, they generate less heat even at fast speeds in deep 
depths.
BY SHAVING REMOVAL
• Apart from drilling faster and more profound, auger bits evacuate 
shavings very efficiently. It is often thanks to their spiral section 
(flight), which directs shavings to the highest, leaving the 
opening clear and unclogged. 
• However, with Spade Drill Bit, shavings usually compile above 
the bit within the hole, and at some point, you would possibly not 
be ready to see the paddle.
BY COST
• Auger bits are a bit expensive due to their design and shape.
• Spade bits are very affordable. Their simple flat design makes 
them cheaper than augers, and this is often quite logical 
because the fabric wont to build them is a smaller amount.
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