Step 1: Understanding Slab Making.
To make slabs, the primary tool used is a wood roller, which helps roll out the clay evenly into flat sheets. Other tools, like knives and hammers, may assist in shaping or cutting, but the wood roller is the main tool.
Step 2: Analysis of options.
- (1) Wood Roller: Correct, wood rollers are commonly used to create even slabs of clay.
- (2) Knife: Incorrect, knives are used for trimming or cutting, not for rolling out slabs.
- (3) Hammer: Incorrect, hammers are used for shaping or joining, not for making slabs.
- (4) Grinder: Incorrect, grinders are used for fine finishing, not for making slabs.
Step 3: Conclusion.
Thus, the correct answer is (1) Wood Roller.