It's been over a year but IIRC I wire wheeled the old peeling chrome off with a 6" bench grinder with spiral wire wheel then took any heavy burs off with a 1X42" belt grinder with probably a 400 grit belt but I have a nice old belt to finish with that is more like 1200 grit it's so wore down. Then went straight from there to a coarse stitched sisal 8" wheel with the black compound (usually for aluminum I think) Then a soft cotton 8" buff wheel to finish and wipe with an oily rag. Nothing too crazy.
I've had to grind some of these wrenches down to fit certain tight spots on my motorcycle and I've always polished the ground ends to a fine finish to relieve any stress risers as they obviously are weakened by the reduced size. This is how I do those too after the initial grinding. I've misplaced my ground down Hazet wrench but here is a ground down socket.
The snap-on on the left is about the same original thickness of the ground down Hazet so you can see it's had about 1/2 the meat taken off the top edge but tapers back to the original thickness around the middle. It will still take 25 ft lb of torque and has likely has taken more than that as this socket I've had for 45 years.
And Well I'll be Dammed! This wrench is my ground down wrench from back in 70's too. This wrench and the socket are the only Hazet tools that weren't stolen from me when my house was ransacked back in the 80's and I lost all my tools and equipment. These 2 tools were with my motorcycle and survived but alas, I haven't seen this wrench since I took this photo about 4 years ago. I didn't realize I had a photo of it on photo bucket.
This is why I went to such great lengths and expense to get this complete set of open/Box wrenches from New Zealand a year ago that I posted photos of in the link above. Amazingly this wrench and socket have spent years in a motorcycle tool kit on my bike while it sat in a barn for several years in 40 below winters and then about 20 years in a garage in a warmer climate where temps went from zero or so to probably 80 degrees or more in summer months and look, no rust where I ground the chrome off. Must have had just the right amount of old oil on them
