[Swordmaker]

“They placed a linen sheet flat over a volunteer and then rubbed it with a pigment containing traces of acid. A mask was used for the face. The pigment was then artificially aged by heating the cloth in an oven and washing it, a process which removed it from the surface but left a fuzzy, half-tone image similar to that on the Shroud. He believes the pigment on the original Shroud faded naturally over the centuries.”

We know what the image is made of and there are no pigments involved. The Shroud has been examined with very sophisticated instruments and all of them have failed to find any pigments on the Shroud that correspond to the location of the image.

The copy made by Garlaschelli apparently approximates only ONE of the multitude of characteristics of the Shroud... the evanescent image. This has been done before... and none of the techniques have yet met all of the criteria for duplicating the Shroud... one of which is the lack of pigments down to the electron microscope level.

[TheThirdRuffian]

It’s a stain, not a pigment. The “acid” is lemon juice.

It’s an old technique for the transfer of images to fabric (or paper or anything else).

[SkyPilot]

I am really glad you showed up on the thread. It is amazing to see this story fall to pieces with only a minor effort to bring forth real facts.