Ive had quite a few vises where the casting wasn't perfect. take a look at this vise. I sold this one a while back. notice anything missing???
The 'S' in Sawyer.
Just a preface to my comments below:
I work in the casting industry. My area of specialization is molding sand and the equipment used to mix & reclaim molding sand and automated molding machines.
There are two basic ways to place letters on a casting. The first is on the pattern itself. That is most often done with an injected-molded pattern, hand placed letters, or crimped banding. Most foundries do one or all of the above.
The other way is to use stamped letters directly on the mold. This would be done in much the same way letter blocks are placed into a printing press frame. The frame of letters would then be pressed into the finished mold prior to allowing the sand to dry. Small foundries who cast one-off products are most likely to do this.
The letter in this vise is an 'H'. The issue is not casting quality. It could be that a molder used the wrong letter that day or it could legitimately be an 'H'. If I've learned one thing here on GJ is that there isn't a single vise product line that has been thoroughly and completely documented ...
Brian
I took some photos today for your viewing pleasure ...
Pic 1: Pattern board on an automatic molding machine.
Pic 2: Close-up of lettering on injected mold pattern.
Pic 3: Close-up of crimped banding pinned to same pattern (we do this for customer order numbers)
Pic 4: Top half of horizonally-parted mold. You can see a man standing behind it for a sense of scale. The mold is 72" long x 30" wide x 12" deep.
Pics 5 & 6: Letters that can be hand-placed on patterns for use in "cores".
Pic 7: A "core" is a mold that is placed inside of the master mold. On a vise, a core would be used to create the empty void in the dynamic jaw screw housing.