I've had the same grooving/siping knife for years. One of the best tool investments ever.
Sipe the big center blocks. Easy and always helps. Avoid the outers.
I grooved and siped a set of Michelin XL's about four years ago. Holy **** was that a work out. My arms and back were sore for days. I even bent the knife a little.
Sipe the big center blocks. Easy and always helps. Avoid the outers.
I grooved and siped a set of Michelin XL's about four years ago. Holy **** was that a work out. My arms and back were sore for days. I even bent the knife a little.




