# DIY Rock Grinder
Things You'll Need
- Tape measure
- Permanent marker
- 1/2 by 10 by 16 inch iron board
- 1/4 by 4 by 12 inch iron pipe
- Welder's mask and gloves
- Arc welding kit
- Quick-dry cement
- Mixing tub
- Trowel
- 1/4 by 2 1/2 by 6 inch iron pipe with one capped end
- 1 by 36 inch iron rod
Instructions
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1
Determine the center of the iron board by measuring the board with tape measure. Make a mark at the center of the board with a permanent marker for future reference.
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2
Position the 12-inch iron pipe over the mark at the center of the board. Ensure the pipe is centered on the mark.
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3
Weld the pipe to the iron board with an arc welding torch. Wear your gloves and welder's mask to avoid potential hazards.
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4
Mix the quick-dry cement in a mixing tub according to the instructions on the label. Place wet cement in the 6-inch iron pipe.
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5
Push the 3-foot iron rod into the quick-dry cement in the 6-inch iron pipe. Position the iron rod in the center of the iron pipe.
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6
Allow enough time for the quick-dry cement to set. Read the label to determine drying time, as this may very from one manufacturer to another.
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7
Place rocks in the 12-inch pipe. Use the cemented iron rod as a piston. Drive the rod into the 12-inch pipe to grind the rocks.
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8
Turn over the iron board to remove the crushed rocks in the 12-inch pipe.
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