Time for some picture updates:
First some barrel spinner mandrels. I have finished two of the three parts. I hope to finish this next week:

Complete:

The part that still needs to be finished:

I started these a while ago but had to wait for the bearings. More on these and their construction when I finish them and get my grade.
Next is a burnishing reamer for .22. The main part is made out of drill rod and turned down on the tip. The tip is then heated to red hot, quenched, cleaned and then heated to a straw color. This last part is very easy to get wrong as we use oxy-acetylene to heat it. Just a little too much heat and you have to start all over again. It took me four tries to get it right. I was a little aggressive in the cleaning (using sandpaper) after each failed attempt and managed to get the tip just a little undersized. After getting the tip to a straw color, the tip was ground down on a surface grinder. The handle is cold rolled steel and is secured to the reamer with a set screw.
Still, my grade was a 97 so I am happy!


I also finished the Clymer reamer extension. Made out of cold rolled steel with the previous picture showing the detail on the tip. Not much to this one. Hole drilled in the tip for the reamer to fit in. Handle fitted and secured with a set screw.
Final grade: 96

And last but not least, a barrel vice. Made out of 2x1.5" cold rolled steel, this is a hunk of metal! Fairly simple project as it was mostly drilling holes on a mill. Of course the bolt holes had to be tapped (16x.2mm). The two parts were then assembled with a .125 shim between them. You really have to crank the bolts down for this one! After that, the front hole was step drilled on a lathe and finished by boring it out to 1.75". I changed to a carbide boring bar during the process as I was getting a lot of chatter from the HSS bar I was using. Once I removed the chatter marks, I was slightly over size but it is not critical in this project.
Final grade: 97. The instructor commented on how well I removed all the burrs and sharp edges from the pieces.
