Drywall is a better material than MDF (medium density fiberboard) for walls because its joints are less likely to crack. Wet sanding will avoid dust.
Choose drywall and try wet sanding to reduce the dust
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Bench Grinding Stone Wheel 150 X 20mm 32 13mm Bore Grade, 60% OFF
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Bench Grinding Stone Wheel 150 X 20mm 32 13mm Bore Grade, 60% OFF