Fig. 10From: Charcoal or black stone? Reconstructions as a tool to study the behaviour of dry underdrawing materials within the paint structure of sixteenth century panel paintings©HPM, HERCULES Lab—U. Évora, PortugalReconstructions over imprimatura layers with different underdrawing materials. The right half of each panel was brushed with a feather to determine the removability of the lines. All images Back to article page