Paddy OFernichur link=topic=2332.msg15549#msg15549 date=1306854836 said:BTW, if you do lose a screw you should just call Starrett.
dalee link=topic=2332.msg15548#msg15548 date=1306854193 said:Hi,
While they are very handy to have for all around use like Paddy said. If you have a mill, they quickly become indispensable to have. I could not live without a set of them.
The one thing I would add to Paddy's comment is to get a proper fitting screwdriver for them. Either grind one to fit or buy one. I use a free one I got from a Braas Controls Engineer for working in electrical enclosures years ago. Those little screws are a bugger to find replacements for if you mess one up. And it tends to hurt if you use a badly fitting screwdriver that slips and you drive it into the palm of your hand. Ask me how I know. ;D
dalee
Paddy OFernichur link=topic=2332.msg15555#msg15555 date=1306862907 said:Pete link=topic=2332.msg15552#msg15552 date=1306861355 said:The starretts are hardened and ground steel but they could still be damaged by using a hard surface on them. LOL, Anvils and a 20 lb sledge hammer wouldn't be a great way to adjust them.
Pete,
I've been on a grand tour of the facility and saw the No.154's being made. They are NOT hardened steel, they're made of cast iron and are soft. Be careful with them. I would not recommend hitting them at all.
The way I do it is to set the screw to have VERY slight tension, slide them open into a pre-set micrometer (held in my Mitutoyo micrometer stand), and lock the screw or screws.