a. Sled Runner. Use a sled-runner jointer to tool horizontal joint (Figure 2-21).
Figure 2-21. Tooling horizontal joints
b. S-shaped. Use the S-shaped jointer to tool vertical joints (Figure 2-22). This is called striking.
Figure 2-22. Striking vertical joints
2-22. Burrs. You can reduce burring by finishing the horizontal mortar joints before you finish the
vertical joints. If mortar burrs remain on the wall after you have finished tooling, you should remove
them. This will prevent small amounts of water from being lodged in the mortar joint.
2-22
EN5157
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