I am a new Sacristan at my parish and I have been learning about altar cloths. We use a totally square white one as our top altar cloth. We need another one and I would like to make it. Where do I find a pattern to do so? And, where to I find the cloth?
Also, search Ebay.
The top white altar cloth, somtimes called the fair linen, should cover the entire top of the altar–the mensa.
Therefore, they are usually custom made for a given altar.
The weave should be a 3 in 1 herring bone twill. As for size, two cubits by eight cubits sounds good. Pure linen, too.
In case no one gets the joke, WetCatechumen is describing the Shroud of Turin.