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Conservator Michael Gallagher describes his approach to correcting distortions in the canvas of the Museum's newly acquired Jabach portrait. Learn more and watch four additional videos in this blog post: http://met.org/1yu6Nlj "I temporarily apply a piece of polyester fabric to the reverse using a heat-seal adhesive. The fabric is fixed to a wooden bar at one end. This will be used to facilitate stretching out the distortion in the area to be treated. (This "patch" can easily be removed once the