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Caveat Emptor When it comes to metal working, and especially the machinery, lathes, mills, grinders, perishable and non-perishable tooling, and their level of precision is very relative to ones perception of what high-precision "Is". The foreign companies tend to use the word.. "precision"...

Look for 9-42 Bridgeport/Clone. Some get all sweaty over V Speeds. I like the step pulley drive better. I have both and I'll run the step pulley. With a VF Drive The best feed attach for a knee mill is the power drive on the knee. The X + Y ok is you think you really need them.( I don't). They...

^^^^^DITTO^^^^ on the "ALORIS" and paired up with a quality 6 jaw.

Whether using a Rotary or a VFD, the motor is the only load per drive. With new machines with VFD spindles the spindle is the only load on the drive. Controls used on most machinery are single phase. You should never connect the control power to the wild leg of a rotary or a FVD. If you are...

I've seen rotary's that were started with a pull rope. As long as you can spool it up enough to start, ya don't need any Capacitors. They just clutter things up. NOW, if you are real ambitious you can use capacitors and use them to start the rotary. But that's a lot of jacking around that is not...

About the only thing you cannot do is disconnect the load from the drive, which is in direct violation of the codes.

Unless he's planning on moving to a different building, the first thing I'd do is bite the bullet and put in a 200A 220V feed to his outbuilding. As long as the main panel is not overloaded, just install another 200A breaker and feed the outbuilding from the main. All depending on the size of...

You can't go wrong or cause damage by doing that. The need for doing that is entirely up to you.

Unless It's been setting out in the driveway, Just turn it on and push the start button. If it was properly cleaned and wiped down after the last use, just run it. Its not a helicopter. :rolleyes:

Something you wish to say? Speak up.

I don't have a tapping head. Those are useful when your machine cannot feed with a proper feed rate. Those tapping heads have lead screws to solve the problem. It takes some practice, to get the feel for it. I tried to say in my earlier post that with through holes drill all the way through...

And you drill and tap small holes in extremely tough materials?????? Just using a 60, 82, 90 degree center drill and running a 135 drill "will" destroy even very pricey carbide drills. not only is the drill scrap, it then results in tap failures. It's no different than page after page of...

I'd contact PTG and ask what your dealing with. Those are made, heat treated and finish ground. Parts like those can be a crap shoot unless you can test them for hardness. Or, at least get a reasonable assurance as to what they are supposed to be. As stated use top quality 135 deg drills...

I've been around Army CBT MOS DI's during the 60's that would have made Ermey seem like a loud mouth choir boy. It's the quiet ones you have to worry about. I have friends from the same time period that thought their Basic and AIT,,, at other training sites,,,, was like a long vacation. Mos...

Alinwa, thank you for the thank you. I hope all can benefit from these discussions. :D Butch Lambert, There's nothing wrong with cutting the relief like you do. I sure you already knew that , but I mentioned it as that particular step you use has not been spoken of here. :) Gene Poole, Those...

Most of the naysayers are commenting on results they may have had 20-40 years ago with carbide. All carbide is not the same. It's almost a science to use the right insert, geometry, chip control, coatings and insert material. Like Nez said the inserts have to be sharp ground and of the proper...

Laydown inserts are usually full profile inserts. They provide more clearance and are necessary for cutting internal threads with small ID's. . If they are not full profile, they are the the least durable insert. Most are not universal and only cut a certain pitch and use tapered shims under the...

I'd use high positive holders and carbide. Stay away from negative rake tooling as those machines don't have the rigidity necessary to run negative carbide tooling. Tool holders, Go with the tallest holders that you can still adjust them to be on center line with the lathe spindle. Determine...

Unless there was something amiss with Bats threads I'd leave it alone. Recutting them for no reason other than putting the tolerance into the action is a bit backwards. All manufactures have their thread requirements available and should be what is followed when threading a barrel. You surely...

The Bridgeport Traks and Paths were pc based. Best fix for them is a Southwestern ProtoTRAK. I still have a 90% complete EZTrack on the shelf. As long as they work and you are only going to run that control, with enough aggravation you may teach yourself to operate it. They are right up there...