A process for isolating 2,2,4,4-tetramethyl-1,3-cyclobutanediol by crystallizing TMCD in a crystallization zone to generate a slurry comprising TMCD solids and isolating the TMCD solids in a solid liquid separation zone to generate a wet cake and a mother liquor stream. The bidirectional dual eccentric reamer can have a shaft with a longitudinal axis supporting a plurality of reamer portions. A further flexible web of material connects the cover to a portion of the articulable housing, the further web of flexible material providing an axis of rotation for the cover when the cover is biasedly rotated onto the display graphic.