The Home Machinist!

IMHO only the Haas design and the ring and pins design can produce a purely radial load. I lke that Haas design. You could drill extra holes to allow a single plate to cover a wide range, and the plate is simple enough that it would be easy to make extra plates for more range. The grippers could be ...

Ok. This thread has gone on long enough and wandered enough that I can no longer resist the urge to offer an answer to the question in the title.

A screwdriver.

Rear support may also cock the fronts of the jaws inward slightly.

It's always been my intent to make the sort of spider you suggest. It will be easier now that I have a crude sort of rotary table. Drilling the jaws will become a possibillity should I ever finish my EDM drill. That would also open up the possibilty of mounting soft jaws (though I'm more likely to w...

I've not tried this yet. It will have marginal benefits. It does eliminate the sharp edge that would dig in on larger diameters, but there's still one there, it's just less pronounced, and will have been moved slightly inboard, towards center. Worth doing for those who might hope for the best possi...

Harold writes: > If you alter the edges of the jaws, unless you do it in perfect symmetry, > the piece will be offset to some degree, giving up some of the precision > you had hoped to establish. I would recommend you do not alter the edges, > although when gripping pieces larger than the chosen dia...

mcostello writes:
> Now 1 furnace producing the same 300 tons 24-7 and they said it is 1/4 of America's production.

That's about 110,000 tons per year. In 2014 the USA produced 88,000,000 tons of steel.

Russ writes: > ...my impression is that most of the vast production capacity we once had is now derelict. And obsolete. The entire complex was developed to exploit high-grade ore from the Iron Range. That high-grade ore is gone. Nucor has a mill in Gary, though. Not surprising: scrap is probably rea...

BadDog wrote: ↑

Fri Apr 13, 2018 3:28 pm

What used to be called Steel Mills in the US are now called "Still Mills", aka huge abandoned buildings...

Interesting that the USA manages to be the world's fourth largest steel producer and twelfth largest exporter with no steel mills...

Having welded custom exhaust for a few years, I can tell you with certainty, we never disconnected batteries or ECMs ever. And as for 'isolating the grounds' by disconnecting the battery, Hah! All you will do is force stray current into whatever is grounded to the frame instead of into that acid co...

I wondered what you were talking about, and then I remembered the pythons. Here's how stupid the government is: they gave people PERMITS to catch them. PERMITS, when they should be begging everyone who has a gun to shoot the silly things. I don't know how pythons taste. Someone needs to look into i...

warmstrong1955 wrote: ↑

Thu Apr 12, 2018 6:17 pm

You guys in Florida got snakes big enough to justify a .458 or maybe a 50 cal..... just to slow 'em down.....

I thought the gators took care of the snakes (and vice-versa).