I went to an estate sale a couple of months ago looking for tools. I bought 2 vintage saws. When I went back to pick them up, the owner volunteered to throw in some misc. other tools. I went home with heavy crates of various unsorted tools. Just now getting around to looking them over and sorting them out. Mostly junk machine tool parts. The guy must have been a machinist. Anyway, the box also contained about20 taps by CARD and Greenfield, some very large sizes, and about 100 reamers. I don't know what the reamers are used for. I was going to toss them, but then I did some research on the web and found that they are quite expensive. They are all either Lavallee & Ide, National or Putnam. Some are in the boxes, some have some rust on the smooth part of the shafts, but sharp cutters. The question I have is EXACTLY what do you do with them. I am not a machinist but have always thought of buying a milling machine and lathe and learning as a hobby. Are these reamers something that a hobby machinist would likely use, or should I get rid of them. What is the quality of these brands.