The panel was then fixed, face down, to a table, and the wood planed away from the back until it was "as thin as a plane may safely go", and the remainder scraped off with a sharp instrument such as a razor. The ground of the painting was then removed by solvents or scraping, until nothing remained but a thin skin of colour, pasted over with paper and held together by the muslin. A prepared canvas was then attached to the back of the paint layer, using the same method as was used for lining pictures.