The grubbing edge on a Pulaski should be bevelled at what angle?

The grubbing edge on a Pulaski should be bevelled at what angle?

• A. 45 degrees
• B. 30 degrees
• C. 60 degrees
• D. 90 degrees

Answer: (A)

The bevel angle on the grubbing edge is about balancing cutting ability with edge durability for working in dirt. A Pulaski’s grubbing edge needs to bite into soil and roots, but also stand up to the rough material you’re throwing up as you grub. A 45-degree bevel provides that middle ground: sharp enough to cut through soil and small roots, yet sturdy enough to resist quick dulling or chipping. A 30-degree angle would cut very well but dulls and chips quickly in dirt; a 60-degree angle would last longer but won’t dig as efficiently; and a 90-degree edge would be almost square and poor at cutting. So 45 degrees is the best compromise for effective grubbing and durability.

The bevel angle on the grubbing edge is about balancing cutting ability with edge durability for working in dirt. A Pulaski’s grubbing edge needs to bite into soil and roots, but also stand up to the rough material you’re throwing up as you grub. A 45-degree bevel provides that middle ground: sharp enough to cut through soil and small roots, yet sturdy enough to resist quick dulling or chipping. A 30-degree angle would cut very well but dulls and chips quickly in dirt; a 60-degree angle would last longer but won’t dig as efficiently; and a 90-degree edge would be almost square and poor at cutting. So 45 degrees is the best compromise for effective grubbing and durability.