Little trick i use for cutting threaded rod. To keep the jaws of the chuck from marring the threads I use three nuts. Two of the nuts are positioned at the front and back of the jaws for support. The third nut is locked against the front nut to secure the threaded rod and allow me to part the desired length off. The brass threaded rod is being parted off into small pieces for the blade clamp knobs.
Customer won't allow us to show the part in the machine so might as well take a picture of one of the tools doing work on it 😛. Working on some large (10ish" diameter) 4140 @ 36 HRC castings with interrupted cuts.
Prototyping is my favorite part of my job. We know what our capabilities are but when we work on new watches we push those capabilities as far as possible. This watch will have a lot of tricks up its sleeve.
Parallels! The tapered one are mint. These are used as another way to measure bores. Like an adjustable parallel the inclined sides slide against each other. The other side is a radius though so they fit into the bore properly. A measurement is then taken with a mic from the parallels protruding from the bore. Downsides is that the bore needs to be a through hole with access to both sides and using a mic there ability to be more precise than .0005" is questionable. They can also be locked a few thou off center if care isn't taken when setting them into the bore to be measured. Got a good price on the other set of used parallels. Haven't miked them yet. #brownandsharpe#parallels#madeinamerica#tools#measuringtools#machinist#manualmachinist#studio#instamachinist#instaartist