I had the opportunity to do another plug repair in Corian the other day. This customer had a curved crack alongside his sink that had gotten dirty. It was really unsightly in his light-colored Corian. See the before picture below.
Lucky for him, he had a repair piece that I could use to do a plug repair. A repair piece is a scrap piece of Corian left behind from the original installation. Corian is made in batches and lots, so in order to do an invisible repair, I need to use a piece of matching Corian. The only way to insure this, is to use a piece from the original slab, usually a sink or cooktop cut-out.
Here is a picture of the new piece being glued into the counter. You can see the size of the piece I used to replace the crack that I cut out. This is not done “free-hand”. I have a set of templates made specifically for this type of repair.
After the glue dried I sanded the area, and the outcome is a smooth repair that is invisible.