Afternoon guys,I have several of these bushings to install in a QCGB.On some of them the bore was perfectly size which I did have to turn the OD down just alittle using a carbide insert.Then on another bushing the OD was correct but I needed to bore it out to match the shaft which is where he problem is.The bore needs to be just alittle over 1/2 .542 ID So I don't have a boring bar with an insert that small so I use a piece of 3/8x3/8 HSS and just made me a boring bar.The first pass was OK cause I remove most of the material.Next couple passing I was just trying to sneak up on the correct size so that I would not make a mistake like I did on the first one that I bored.Anyway while boring I notice that it was not removing hardly any material so I made couple more passes which I adjusted for about another .005 making .001 each pass.Still not removing any material and its boring at an angle.I can measure one end then measure the other and they are different.
When I was turning the OD on some I had made an arbor to fit the bushing on and it work perfectly,but when I switch cutting from carbide to HSS its just not cutting.It is i guess little dull but I was only taking .001 per pass.My other choice is I guess to buy couple reamers so that I can bore it to size,so what am I doing wrong here?
When I was turning the OD on some I had made an arbor to fit the bushing on and it work perfectly,but when I switch cutting from carbide to HSS its just not cutting.It is i guess little dull but I was only taking .001 per pass.My other choice is I guess to buy couple reamers so that I can bore it to size,so what am I doing wrong here?