Talk:Grain (textile)

Not cross-grain

"Cross-grain" is not the English alternative to "bias", it is a different concept. Cross-grain refers to the weft threads of a woven cloth; bias (French: biais) is at 45° to the grain of the cloth. The origin of the bias concept was the discovery by Madeleine Vionnet that if the cloth was cut on the bias it would drape, hang and move on the human figure in a most satisfactory manner. I cut the mistake from the article. Macdonald-ross (talk) 11:32, 17 April 2012 (UTC)

Biases always perpendicular?

The article suggests that the biases can be at angles other than 45°. It then says they are perpendicular. At 45° that would be true, but at any other angle they would not. Instead, I believe they would be equal angles off the straight grain. Seems like bias angle should be defined as always 45°, or the statement that they are always perpendicular should be removed. Unknowntouncertain (talk) 22:37, 2 July 2020 (UTC)