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Being able to produce block, pavers, retaining wall units, and similar products from one machine allows producers to compete more cost-effectively in their market area. Ease of installation, automatic lubrication systems, quick mold changes, electronic control systems, pallet cushioning, and speed control are features that should be considered when purchasing a block and paver machine. Other features that should be considered are: 1. Self-diagnostics: this electronic function allows a machine to detect its own problems and recommend repair procedures. 2. Improved labeling: some manufacturers clearly label components so that the machine can be adjusted or repaired quickly. 3. Variable vibration: allowing the machine's operator to change the frequency and amplitude of vibration as it is applied to the mold box improves efficiency and increases quality.