| 摘要 |
A device 10 and method for forming a non-tapered end 12 of a gypsum board 14 into a tapered configuration or portion 16 includes a rotary drive tool 18 that imparts rotary motion to a tool bit 20 removably secured thereto, a pair of oppositely disposed angle members 22 having cooperating base portions 24 configured to promote attaching a dust collection collar 17 to the base portions 24 , the angle members 22 disposing and guiding the rotating tool bit 20 between outer paper walls 28 of a non-tapered end 12 of the gypsum board 14 to ultimately severe portions of gypsum from the non-tapered end 12 thereby forming a recess 32 without damaging the outer paper walls 28 of the gypsum board 14 . The device 10 and method ultimately removes severed portions of gypsum from the recess 32 , whereupon, the non-tapered end 12 of the gypsum board 14 is forcibly bent to form a tapered configuration, end edges 128 of the board 14 are secured together with tape 122 to prevent the board 14 from returning to a non-tapered configuration, and the gypsum board 14 is secured to a support structure 38 such that tapered portions 16 of adjacent gypsum boards 14 cooperate to promote a planar finished seam when tape and joint compound are applied thereto.
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