Hi, I am having problems with my reamed holes, I thought maybe advice would help? I am attempting to ream out a hole in a bronze bushing for a 3/16in shaft to run free inside it. (shaft is 0.1875in, hole is being reamed 0.1885). I have used these clearances successfully in the past on several applications for shafts. First, when reaming this bronze, I am using regular cutting oil and running the lathe at 1200RPM. This came from the speed/feed chart in the shop. I find that when I put the reamer in, the cutting oil immediately burns off, leaving a black coating on the end of the reamer which smokes for about 30 seconds before being cool enough to touch. Even after I reamed the holes through (eventually ended up doing it dry), they are now still too small to fit my shaft through. I will most likely end up putting them on the mill and running the reamer up/down ten or so times through the holes to loosen them a bit. However, I just wondered if there is some special technique I need to be using when reaming on the lathe or when working bronze ??