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.