| 摘要 |
A sanding system suitable for drywall sanding has a foam sanding block that fits into a hollow housing such that a gap is left around most of the perimeter of the sanding block and the housing near the plane of sanding. Some regions of the perimeter are dimensioned relative to the sanding block such as to not leave a gap but instead are such as to provide a friction fit between housing and sanding block.
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