It occurs to me to ask - others have problems with files [the tool, from wood rasps to nail files]?
One of my texture things has been that I cannot TOUCH them, or listen to them [if someone is filing nails too close to me, it does not me what the fingernail on the chalkboard does to other peiople [THAT does not bother me]. Sandpaper and some fabrics are the same. Love books, but if the coveris too sandpapery I can hardly bear to read them.
I always thought I got my nerve connections scrambled in my big sickness in 4th grade - but now I am not so sure.