Why are burrs so malleable?

[Bud]

What kind do you have?

I do have I think close to 25 or 30 different stones and many are double sided. I don't think that you would be impressed because most were picked up at farm and garage sales. I'm going to have to get the box out and look  because I think that few are labeled or marked in any way and only a couple still are in the box they came in. It's pretty obvious that they are an assortment of grits. Some are so uneven and worn that they should probably be tossed and others look as if they've hardly been used. I was just reading your's and Mark's new posts here and as a result I think that I'm getting motivated to give it another try. Too many projects. I'm determined to get the wife's ceramic kiln up and running again so I can try my hand at knives made from files. Got the wrong parts the first time and now, hopefully, I've got the right ones on order. If push comes to shove I'll just leave another ink pen in my shirt pocket and toss it in the laundry basket like I did last week. When she got the clothes out of the washer she was plenty hot enough to melt steel over that.