Thread: Machinery's Handbook - which edition?

Hell, I'll sell my clean 28th for $80.00

Greg

Originally Posted by Ueee

Hmmm....
I'm looking at the PDF version now. Specifically the cutting speeds and feeds for turning plain carbon steel, page 1026. I really like they way metric is covered here.....

On the first line it quite clearly states the conversion factors for metric speeds and feeds. As I said above, the book is very much made for the US market. In this case they produce just one chart and it has the above mentioned conversions available to enable someone to calculate the metric data. The book packs a lot in, and if there is a choice between providing metric and imperial they always provide the latter. Generally in previous editions that would be the end of it, with often no mention of metric at all.

Originally Posted by Pete F

On the first line it quite clearly states the conversion factors for metric speeds and feeds.

My point exactly.....i hardly would call that embracing, anyone with a calculator and 2 brain cells should know how to work that out already. I can't really see the point of putting it in. Looks like more of an addition to keep the publishers happy than anything else.

Originally Posted by Ueee

My point exactly.....i hardly would call that embracing, anyone with a calculator and 2 brain cells should know how to work that out already. I can't really see the point of putting it in. Looks like more of an addition to keep the publishers happy than anything else.

Sorry but I don't see your point. The publisher only has room for one chart, the book is primarily written for the US market. So they publish the imperial chart and show how to calculate the metric data. What would you expect them to do, publish metric data and provide details on how to convert to the imperial measurements that 99% of their readers would be using?

I'm afraid for imbeciles like myself, I have to be content with needing to look up things like correct speeds and feeds (if I was keen to use them) in places like MH so needed to buy a copy. For those who already know it all I guess they get to save that money and there's no need for them to either buy the book or steal it off the internet.

Originally Posted by Pete F

Sorry but I don't see your point. The publisher only has room for one chart, the book is primarily written for the US market. So they publish the imperial chart and show how to calculate the metric data. What would you expect them to do, publish metric data and provide details on how to convert to the imperial measurements that 99% of their readers would be using?

I'm afraid for imbeciles like myself, I have to be content with needing to look up things like correct speeds and feeds (if I was keen to use them) in places like MH so needed to buy a copy. For those who already know it all I guess they get to save that money and there's no need for them to either buy the book or steal it off the internet.

I'm a bit speechless..... I put a ####ing smiley there as it was said toung in cheek. It's hardly embracing metric if its just a formula that anyone transferring from imp to metric would already know. I'm sure you have never stolen anything of the net. I'm not sure why but it seems if your name is Peter you have a ####ing problem with me......

My main question was to do with the feed rates listed, not the lack of metric. Not once did I say there should be a metric chart.

The more things change the more they stay the same.

16th ED vs 29th ED

DSCN2995[1].jpg

and a typical metric update.

DSCN2996[1].jpg

Obviously the basics won't have changed since essentially the first edition, other than perhaps to include details on metric conversion. Yet the book seems to get larger each year. Given your gadget there Josh, how does the material in MH29 pages 713-715 compare with that other edition? Can you put up a photo of the same section in MH 16?

Originally Posted by Pete F

Obviously the basics won't have changed since essentially the first edition, other than perhaps to include details on metric conversion. Yet the book seems to get larger each year. Given your gadget there Josh, how does the material in MH29 pages 713-715 compare with that other edition? Can you put up a photo of the same section in MH 16?

Can't do a comparison as the 16th edition was published in 1959. The pages 713-15 in edition 29 start off with a specification that was not written till 1973.

For others the that do not have the 29th edition it is the section that deals with the use and calibration of a surface plate, and being a US document it is largely based on the federal spec GGG-P-463C (google it and you can find a pdf). As it happens this is where I would have loved to see the a metric standard grade plates with the repeatability specification (as I still can't find what it should be :S )

-Josh