twitter: rec.crafts.metalworking - 25 new messages in 12 topics

rec.crafts.metalworking
http://groups.google.com/group/rec.crafts.metalworking?hl=en

rec.crafts.metalworking@googlegroups.com

Today's topics:

==============================================================================
TOPIC: Pressure washer sand blasting head
http://groups.google.com/group/rec.crafts.metalworking/t/5f0d0504d8588064?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 7 2010 12:26 pm
From: Bob Engelhardt

F Murtz wrote:

> I tried looking on the web but could only find advertisements. I will
> have to have another go

It was a while ago that I looked, so I don't remember where I found
anything. Could have been Google Groups:
http://groups.google.com/advanced_search?hl=en&q=&hl=en&

Bob

==============================================================================
TOPIC: Mars Direct, or getting there is half the fun.
http://groups.google.com/group/rec.crafts.metalworking/t/f278042885f73a5b?hl=en
==============================================================================

== 1 of 7 ==
Date: Wed, Apr 7 2010 12:32 pm
From: wmbjkREMOVE@citlink.net

On Wed, 7 Apr 2010 11:37:13 -0700 (PDT), Concerend Citizen
<hot-ham-and-cheese@hotmail.com> wrote:

>On Apr 7, 11:09�am, wmbjkREM...@citlink.net wrote:
>> On Wed, 07 Apr 2010 01:43:54 -0700, pyotr filipivich
>>
>> <ph...@mindspring.com> wrote:
>>
>> >Okay, I decided to give with some URLS so that I don't have to type in
>> >the whole bloody book.
>>
>> >First off, wikepedia.
>> > � �http://en.wikipedia.org/wiki/Mars_Direct
>> > We still need that sort of national goal.
>>
>> What's wrong with a national goal of eliminating poverty?
>
>Nothing wrong at all.
>
>First we close our borders.
>
>Then we revoke business licenses for entities that hire illegals.
>
>30 million jobs just opened up.
>
>End of Poverty in America.

LOL Maybe gummer will take up strawberry picking or chicken chopping,
vaulting himself into the middle class. And then angels will
reschedule rain for the days before they wash my car.

>Next?
>> Is it really
>> so difficult to see that a manned mission to Mars will be reminiscent
>> of the Soviet Union parading its fancy military hardware while its
>> people stood in line for bread? How much good did their pretending do
>> them?
>
>We did the same thing at the same time.
>
>But it worked well for us, and in doing so we won the cold war.

Aha! So the plan is to outspend China this time. Are you sure they'll
lend the money for that?

>We received something called the Peace Dividend and squandered it on
>give away programs.

And this giveaway money went where, exactly?

>> Presumably you're fully stuck on the symbolism of "success".
>
>Speaking of symbols, kindly put the period inside the parenthesis
>because this isn't programming class.

As soon as you start giving more than 2 seconds' thought to what you
write.

>Symbolism? No. I like Americans working and paying their fair share
>of taxes.

That's strange, because it sounds like you're in favor of more debt
and more delusion.

>There's no symbolism in that, just good policy.

Let's see your plan for paying for a Mars mission, and *exactly* where
any increased tax revenue will come from. Let me guess - hotels
selling bagels to NASA?

>> Then consider some practical realities. Unless there's a miracle change
>> in attitudes and priorities, things are going to get worse overall in the
>> long run.
>
>We need an election for things to get better.

That's the kind of attitude that needs changing. Another would be NASA
procurement officers believing instinctively that hotel food is pricey
and in no way part of "better faster cheaper". But neither is going to
happen. In fact, at the rate we're going, Oprah could be the next
prez, elected on a platform of "you get a bagel, you get a bagel, you
get a bagel..."

Wayne

== 2 of 7 ==
Date: Wed, Apr 7 2010 12:36 pm
From: wmbjkREMOVE@citlink.net

On Wed, 7 Apr 2010 14:19:08 -0400, "Buerste" <buerste@buerste.com>
wrote:

>
><wmbjkREMOVE@citlink.net> wrote in message
>news:on7pr5lbip51a8utsm8kltaqq7hondta56@4ax.com...
>
><snip>
>> Presumably you're fully stuck on the symbolism of "success". Then
>> consider some practical realities. Unless there's a miracle change in
>> attitudes and priorities, things are going to get worse overall in the
>> long run. A Mars mission is a lengthy undertaking, and an underfunded
>> effort is doomed to wither on the vine and produce a lot of stuff like
>> this http://www.nasawatch.com/archives/2010/03/nasa-procuremen.html in
>> the process. Exactly the kind of symbolism to avoid.
>>
>> Wayne
>
>Read this: http://www.thespaceplace.com/nasa/spinoffs.html

What part of "priorities" don't you get? Aren't you the guy who's
constantly blaming overspending on liberals? Now you're pretending
that a manned Mars mission is a good investment! Hey big spender, have
you thought about the reality of a couple decades from now, such as
driving 30 extra miles because a bridge was condemned?

Wayne

== 3 of 7 ==
Date: Wed, Apr 7 2010 12:38 pm
From: pyotr filipivich

I missed the Staff Meeting but the Minutes record that
wmbjkREMOVE@citlink.net reported Elvis on Wed, 07 Apr 2010 10:56:34
-0700 in misc.survivalism:
>On 07 Apr 2010 16:41:22 GMT, steamer <steamer@sonic.net> wrote:
>
>>Going to Mars is easier than dealing with poverty.
>
>"We choose to go to the moon in this decade and do the other things,
>not because they are easy, but because they are hard"
>
>If dealing with poverty is too hard, then how about a cap on school
>class size? Or a guarantee that even the poorest will have good access
>to broadband? Both of those would be far more bang for the buck than
>Mars.
>

How about we set up a Federal Department of Education, to make
sure that all the children are above average?

>> Also if Earth
>>gets pasted with a big enough rock poverty won't be an issue.
>
>Now you're talkin'. Whoda' thunk that buying astronomically-priced
><chuckle> bagels was an investment in asteroid avoidance?
>
>>Priorities.
>
>Exactly.

So exactly how will you raise the bottom half to be above average?
-
pyotr filipivich.
Just about the time you finally see light at the end of the tunnel,
you find out it's a Government Project to build more tunnel.

== 4 of 7 ==
Date: Wed, Apr 7 2010 12:38 pm
From: pyotr filipivich

I missed the Staff Meeting but the Minutes record that "Buerste"
<buerste@buerste.com> reported Elvis on Wed, 7 Apr 2010 14:19:08
-0400 in misc.survivalism:
>
><wmbjkREMOVE@citlink.net> wrote in message
>news:on7pr5lbip51a8utsm8kltaqq7hondta56@4ax.com...
>
><snip>
>> Presumably you're fully stuck on the symbolism of "success". Then
>> consider some practical realities. Unless there's a miracle change in
>> attitudes and priorities, things are going to get worse overall in the
>> long run. A Mars mission is a lengthy undertaking, and an underfunded
>> effort is doomed to wither on the vine and produce a lot of stuff like
>> this http://www.nasawatch.com/archives/2010/03/nasa-procuremen.html in
>> the process. Exactly the kind of symbolism to avoid.
>>
>> Wayne
>
>Read this: http://www.thespaceplace.com/nasa/spinoffs.html

But but, that won't lift the lower half above the mean! It won't
eliminate poverty!

The poor you will have with you always. That was an observation
made two thousand years ago. I've yet to see any evidence that it is
not still applicable.
-
pyotr filipivich.
Just about the time you finally see light at the end of the tunnel,
you find out it's a Government Project to build more tunnel.

== 5 of 7 ==
Date: Wed, Apr 7 2010 12:38 pm
From: wmbjkREMOVE@citlink.net

On Wed, 7 Apr 2010 11:35:39 -0700 (PDT), "dcaster@krl.org"
<dcaster@krl.org> wrote:

>On Apr 7, 1:56 pm, wmbjkREM...@citlink.net wrote:
>
>> If dealing with poverty is too hard, then how about a cap on school
>> class size?
>
>> Wayne
>
>I agree with you that going to Mars is not the best choice. But a cap
>on school class size.............. You do know there is no
>corrolation between school class size and learning.

I've pasted a link below, but you shouldn't need it. Try a little
extrapolating with your theory. How big do you think classes can get
without any detriment?

http://www2.ed.gov/pubs/ReducingClass/Class_size.html

Wayne

== 6 of 7 ==
Date: Wed, Apr 7 2010 12:41 pm
From: wmbjkREMOVE@citlink.net

On Wed, 07 Apr 2010 12:38:07 -0700, pyotr filipivich
<phamp@mindspring.com> wrote:

>I missed the Staff Meeting but the Minutes record that
>wmbjkREMOVE@citlink.net reported Elvis on Wed, 07 Apr 2010 10:56:34
>-0700 in misc.survivalism:
>>On 07 Apr 2010 16:41:22 GMT, steamer <steamer@sonic.net> wrote:
>>
>>>Going to Mars is easier than dealing with poverty.
>>
>>"We choose to go to the moon in this decade and do the other things,
>>not because they are easy, but because they are hard"
>>
>>If dealing with poverty is too hard, then how about a cap on school
>>class size? Or a guarantee that even the poorest will have good access
>>to broadband? Both of those would be far more bang for the buck than
>>Mars.
>>
>
> How about we set up a Federal Department of Education, to make
>sure that all the children are above average?

Nice job showing how much thought you've given to your opinion.

Wayne

== 7 of 7 ==
Date: Wed, Apr 7 2010 1:37 pm
From: "dcaster@krl.org"

On Apr 7, 3:38 pm, wmbjkREM...@citlink.net wrote:
> On Wed, 7 Apr 2010 11:35:39 -0700 (PDT), "dcas...@krl.org"
>
> <dcas...@krl.org> wrote:
> >On Apr 7, 1:56 pm, wmbjkREM...@citlink.net wrote:
>
> >> If dealing with poverty is too hard, then how about a cap on school
> >> class size?
>
> >> Wayne
>
> >I agree with you that going to Mars is not the best choice. But a cap
> >on school class size.............. You do know there is no
> >corrolation between school class size and learning.
>
> I've pasted a link below, but you shouldn't need it. Try a little
> extrapolating with your theory. How big do you think classes can get
> without any detriment?
>
> http://www2.ed.gov/pubs/ReducingClass/Class_size.html
>
> Wayne

One of my college courses had several hundred in it.

Dan

==============================================================================
TOPIC: Future Space programs Re: Anniversary of an amazingly enduring design
http://groups.google.com/group/rec.crafts.metalworking/t/57c9c3facffdfb67?hl=en
==============================================================================

== 1 of 3 ==
Date: Wed, Apr 7 2010 12:40 pm
From: pyotr filipivich

Eregon <Eragon@Saphira.org> on 07 Apr 2010 17:07:01 GMT typed in
rec.crafts.metalworking the following:
>pyotr filipivich <phamp@mindspring.com> wrote in
>> Yeah, I'm pumped for the Mar Direct program. Yes, it will cost a
>> lot of money. Even for the Feds, 20 billion is not insignificant. (Or
>> it used to not be, but ... ) it can be done.
>
>$20B??
>
>Nobama blew more than that in his first 6 months in office just on vote-
>buying schemes!

Which tells you where we can hide the money. Just put it in
"Extraordinary Community Organizing" and the Progressives will never
question it.
-
pyotr filipivich
We will drink no whiskey before its nine.
It's eight fifty eight. Close enough!

== 2 of 3 ==
Date: Wed, Apr 7 2010 1:37 pm
From: "Stormin Mormon"

Oddly enough, I still have a couple slide rules. And know
how to do some simple functions on them.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

"cavelamb" <""cavelamb\"@ X earthlink.net"> wrote in message
news:McSdnZadRbC5miHWnZ2dnUVZ_tCdnZ2d@earthlink.com...

It was all done with slide rules...

Richard Lamb
http://www.home.earthlink.net/~cavelamb/

== 3 of 3 ==
Date: Wed, Apr 7 2010 1:38 pm
From: "Stormin Mormon"

If you have good programming, and good data.... otherwise,
you don't get much that's useful.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.

"John R. Carroll" <nunya@bidness.dev.nul> wrote in message
news:1YedncrLWbcG0CHWnZ2dnUVZ_uadnZ2d@giganews.com...

I built a new coax design two years ago.
With modern equipment and an improved design, it developed
30 percent more
thrust and because it had been designed on a computer, we
were able to
eliminate the acustic chamber needed on the original. That
alone reduced the
weight by half.

Believe me, during the entitre build I was thinking about
how some guy on a
manual Jig Bore had done what we were doing on a 5 axis
milling machine.
They went through a lot of set up parts in the old days.

--
John R. Carroll

==============================================================================
TOPIC: Anyone have an External Hard drive available?
http://groups.google.com/group/rec.crafts.metalworking/t/4ad5b9a20cfca5fd?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 7 2010 12:41 pm
From: "Snag"

stans4@prolynx.com wrote:
> On Apr 6, 10:50 am, "Snag" <snag_...@comcast.net> wrote:
>> cl...@snyder.on.ca wrote:
>>> On Tue, 6 Apr 2010 09:16:43 -0500, "Snag" <snag_...@comcast.net>
>>> wrote:
>>
>>>> tnik wrote:
>>>>> On 4/6/2010 7:29 AM, Jim Wilkins wrote:
>>>>>> On Apr 6, 7:16 am, "kfvorw...@gmail.com"<kfvorw...@gmail.com>
>>>>>> wrote:
>>>>>>> ...
>>>>>>> My IT friend has a dongle that has multiple plugs for all types
>>>>>>> of hard drives but he got it at work and doesn't know where it
>>>>>>> came from. It was about $30.
>>>>>>> Karl
>>
>>>>>> All mine says is "Made in China". It connects PATA, SATA and
>>>>>> laptop drives to USB. It came from the second hand computer
>>>>>> store where I bought swappable IDE drive docking kits, another
>>>>>> possibility.
>>
>>>>>> jsw
>>
>>>>> http://www.newegg.com/Product/Product.aspx?Item=N82E16812232002
>>
>>>>> Thats the one I have, and its been working just fine for over 2
>>>>> years. And at 20 bucks, you can't go wrong.
>>
>>>>> One thing to remember, alot of times the front usb ports on a
>>>>> computer do not have enough 'umph' to run a hdd properly. So the
>>>>> best thing is to plug it in to the back of the computer (on the
>>>>> usb ports that are directly connected to the mobo)
>>
>>>> I have a Sabrent USB-DSC5 , similar to that . Came with a power
>>>> supply to plug the drives into , so power is not an issue . Also
>>>> has adapters for ANY type of removeable drive/storage unit .
>>>> http://www.newegg.com/product/product.aspx?Item=N82E16812156017
>>> Bet it won't run single ended SCSI, differential scsi, or even most
>>> likely Serial Scsi - all of which are "standard" removeable hard
>>> drives.
>>
>> Well , ya got me there . It will handle all types of SATA and IDE
>> drives is more accurate . Had my hands on a SCSI HDD recently ,
>> didn't realize what it was until I did some research . I never
>> figured out what , if any , advantages there were to it . You seem
>> to know a bit about it , care to enlighten me ?
>>
>> --
>> Snag
>> "90 FLHTCU "Strider"
>> '39 WLDD "PopCycle"
>> BS 132/SENS/DOF- Hide quoted text -
>>
> A lot has been pulled off the SCSI spec into SATA drives, including
> the command set. Very easy to make an adapter that hooks a SATA drive
> to a SCSI bus. If you go back far enough, the original PC drives had
> to have CPU intervention for every read or write, this survives as the
> PIO default controller mode on most MBs. SCSI by-passed this by
> having a relatively cheap adapter in the machine and the smarts on the
> drive. It also used DMA for transfers, so the CPU wasn't waiting
> around for the drive and controller to deliver the goods. Somebody
> thought this was a good idea for consumer drives, so IDE was born.
> SCSI was at least 5 times the cost of a similar capacity IDE drive, so
> was seldom seen in consumer-grade equipment. Still had the edge in
> performance, so was used a lot in mini-computers and high-end
> servers. And it wasn't limited to just hard drives, the spec allowed
> virtually any peripheral to connect. It's gone through 5 or 6
> iterations, each time the transfer rate improved and usually the bus
> got wider. Latest is the serial-attached SCSI and there's one type
> that uses fiber for data transfer. Since demand is lower for these
> units, prices are a lot higher than for SATA drives. I think there
> are also patent considerations, one reason SCSI hardware has always
> been higher priced than IDE or SATA stuff. One of the nifty features
> is that as long as the electrical interface matches, you can hook up
> older stuff on newer adapters or newer stuff on older adapters. You
> aren't going to get Ferrari performance out of Model Ts, but at least
> the stuff works, usually. Another feature was the longer length that
> the cabling could be, the differential-type interface allowed a really
> long cable, necessary for large external equipment. IDE was limited
> to 18" max, pretty much meant the drive had to be in the box.
>
> I used to run a lot of SCSI drives and peripherals, the Microtek
> scanner with the SCSI interface is still the fastest I've ever used.
> I had 16 drives running on the one machine at one time. If I needed
> more space, I could just add another to the string. Drives were cheap
> on the surplus market as long as I didn't insist on having the latest
> and largest. SATA dropped to the point where it was cheaper and about
> the same performance, more to the point, the available drive sizes
> were a lot larger for a lot less cash. So I folded the drive strings
> down to 4 SATAs and an IDE boot drive. Still have a SCSI controller
> in there but it doesn't get much play.
>
> Stan

Sounds kinda like the BetaMax saga . Better format , but more expensive .
Used in high end apps until other cheaper tech finally catches up and
replaces it .

--
Snag
"90 FLHTCU "Strider"
'39 WLDD "PopCycle"
BS 132/SENS/DOF

==============================================================================
TOPIC: On carbon vs. stainless steel in grills
http://groups.google.com/group/rec.crafts.metalworking/t/6792301c4ff731b6?hl=en
==============================================================================

== 1 of 2 ==
Date: Wed, Apr 7 2010 12:42 pm
From: "JTMcC"

"Leo Lichtman" <leo.lichtman@att.net> wrote in message
news:HZCdnTCuTJh5HCbWnZ2dnUVZ_sOdnZ2d@giganews.com...
>
> "Ignoramus17356" wrote: Yes, Sir, indeed stainless is good stuff.
> ^^^^^^^^^^^^^^^^^^
> A rose is a rose is a rose--but stainless comes in a variety of alloys.
> From your experience, some are good in the barbecue, but others may not
> be.
>

Right, "stainless steel" is a broad and non technical term. It comes in many
different alloys for different applications.
A magnet isn't an accurate gage for determining the quality of a particular
alloy for a particular application.
I've installed hundreds of tons of stainless alloys that were magnetic (and
incredibly expensive) that are now at the bottom of lakes. On intake
structures for hydro plants.
What's commonly called stainless is a large and somewhat complex field and
you really can't boil it down into a small book.

JTMcC

== 2 of 2 ==
Date: Wed, Apr 7 2010 1:06 pm
From: whit3rd

On Apr 7, 5:33 am, "fran...123" <storkensteinrem...@cox.net> wrote:

> Many types of SS (I believe "alloy" is a word used in "castings") are
> good quality even if magnetic.

> Isn't really the symmetry of the crystalline structure of the metal grains
> involved in whether the stuff is magnetic or not? The hexagonal symmetry
> grains being magnetic.

It's something like that. The 300-series stainless steels are
nonmagnetic,
BUT that's by an 'as annealed' test; once you whack it with a hammer,
the strained parts can magnetize.

==============================================================================
TOPIC: I need an idea on how to use scrap electrical conduit.
http://groups.google.com/group/rec.crafts.metalworking/t/de1a84b036e9498e?hl=en
==============================================================================

== 1 of 2 ==
Date: Wed, Apr 7 2010 12:55 pm
From: Jerry Wass

TwoGuns wrote:
> Recently a neighbor that cleans up construction sites had about 100
> pieces of one inch electrical conduit cutoffs from 1 foot to four feet
> long. On an impulse I offered him $20 for the lot thinking surely I
> can come up with some way of using them. What are some creative things
> some of you have used this stuff for?
> Possible uses I have thought of:
> Rollers for a conveyor system.
> Wind chimes.
> Tent stakes.
>
> Anything?
>
> DL
Wind chimes is good---but you have to suspend them at the proper place
to get the proper sounding full tone--Try by suspending between thumb &
finger---then you have to find the sweet spot to strike it also--if you
goof & cut one too short you can add a little weight on the bottom. JW

== 2 of 2 ==
Date: Wed, Apr 7 2010 12:59 pm
From: Jerry Wass

Mark Rand wrote:
> On Mon, 5 Apr 2010 14:22:40 -0500, "Karl Townsend"
> <karltownsend.NOT@embarqmail.com> wrote:
>
>
>> I've got a pile of 7/8 conduit. maybe 500 ten footers. And i need to make
>> tomtato stakes for 150 plants. I checked growers out in FL this winter. They
>> use rebar with the advantage being the tying twine you run down the row
>> doesn't slip - just loop and pull tight. Here I'm thinking buy rebar. How do
>> you use conduit for tomato plants? Specifially, how do you tie to this slick
>> stuff?
>>
>> karl
>>
>>
>
> TIG welding :-)
>
> Mark Rand
> RTFM
wire welding faster--line 'em up--snap a chalk line & pop a bead on each one

==============================================================================
TOPIC: labelling plastic parts bins
http://groups.google.com/group/rec.crafts.metalworking/t/fd33d95a349efe81?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 7 2010 12:59 pm
From: whit3rd

On Apr 6, 7:45 pm, "Stu Fields" <e...@iwvisp.com> wrote:
> Well I've tried some of the suggestions to be able to glue some computer
> generated labels on some plastic parts bins. I sanded the plastic
> carefully, cleaned it with acetone and applied an Avery sticky label.
> No joy. Label nearly falls off.

On polyethylene or polypropylene (you say acetone doesn't dissolve
it),
the cheapest kind of hotmelt glue works well. Put a dab on the
paper and press on firmly... no need to heat up the bin.

==============================================================================
TOPIC: Mig Cart Photos
http://groups.google.com/group/rec.crafts.metalworking/t/f98dd5f4bd301c30?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 7 2010 1:04 pm
From: Bob Engelhardt

Pete Snell wrote:
> Completed my MIG welder cart last night.
...
> I got to use my new JD2 tubing bender ...

Nice job.

But now I have bender envy <G>. I *might* talk myself into the $295 for
the bender itself:
http://www.jd2.com/shop/custom.aspx?recid=1
but I'd need at least a few dies and that would be out of question.

How many dies do you have? Can they be made at home?

Bob

==============================================================================
TOPIC: You write the caption 04-06-10
http://groups.google.com/group/rec.crafts.metalworking/t/20e4da5ea9c437eb?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 7 2010 1:05 pm
From: RBnDFW

Chief Egalitarian wrote:
> http://tinyurl.com/yzwfgzj

This pretty well sums it up:

http://www.youtube.com/watch?v=NSKsrOX4AJo

==============================================================================
TOPIC: Sine Bar Chart?
http://groups.google.com/group/rec.crafts.metalworking/t/cf46fb60fd9c2c93?hl=en
==============================================================================

== 1 of 4 ==
Date: Wed, Apr 7 2010 1:19 pm
From: RBnDFW

Anyone got a simple chart or spreadsheet for a 5" sine bar?

== 2 of 4 ==
Date: Wed, Apr 7 2010 1:22 pm
From: Tim Wescott

RBnDFW wrote:
> Anyone got a simple chart or spreadsheet for a 5" sine bar?

Isn't it just angle = arcsin(offset/5")?

--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com

== 3 of 4 ==
Date: Wed, Apr 7 2010 1:39 pm
From: Mark Rand

On Wed, 07 Apr 2010 13:22:52 -0700, Tim Wescott <tim@seemywebsite.now> wrote:

>RBnDFW wrote:
>> Anyone got a simple chart or spreadsheet for a 5" sine bar?
>
>Isn't it just angle = arcsin(offset/5")?

No, it's offset=sin(angle)x5

:-)

Zeus books have sines in, as do school tables books (if anyone still prints
them). Otherwise, pocket calculators or decent slide rules work...

Mark Rand
RTFM

== 4 of 4 ==
Date: Wed, Apr 7 2010 1:41 pm
From: Tim Wescott

Mark Rand wrote:
> On Wed, 07 Apr 2010 13:22:52 -0700, Tim Wescott <tim@seemywebsite.now> wrote:
>
>> RBnDFW wrote:
>>> Anyone got a simple chart or spreadsheet for a 5" sine bar?
>> Isn't it just angle = arcsin(offset/5")?
>
>
> No, it's offset=sin(angle)x5
>
> :-)
>
> Zeus books have sines in, as do school tables books (if anyone still prints
> them). Otherwise, pocket calculators or decent slide rules work...
>
>
> Mark Rand
> RTFM
I did get that backwards, didn't I?

--
Tim Wescott
Control system and signal processing consulting
www.wescottdesign.com

==============================================================================
TOPIC: A slo-mo crash, with little drama and no damage
http://groups.google.com/group/rec.crafts.metalworking/t/edb3bbf007e44b25?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 7 2010 1:29 pm
From: F. George McDuffee

On Tue, 06 Apr 2010 22:47:05 -0400, Joseph Gwinn
<joegwinn@comcast.net> wrote:
<snip>
> Instead of machining the face a
>little flatter, the whole BXA tool post rotates on the compound, causing the bit
>on the BXA-16N to dig a bit deeper.
<snip>
=======
Old time machinists books advises (when possible) setting up a
tool for a lathe cut, that it should be arranged such that if
anything shifts the tool swings out of/away from the cut rather
than into the cut.

Lindsay has many reprints of the older texts that are quite
helpful for the home/hobby machinist.
A good place to start for an overview is
http://www.lindsaybks.com/bks/milne/index.html
and any of these will be helpful
http://www.lindsaybks.com/bks/milne/index.html

and see my web page
http://mcduffee-associates.us/machining/machining_books.htm

Better luck on the next project, and its a mistake only if you
didn't learn anything...

Unka George (George McDuffee)
..............................
The past is a foreign country;
they do things differently there.
L. P. Hartley (1895-1972), British author.
The Go-Between, Prologue (1953).

==============================================================================
TOPIC: Newbie worn gear questions
http://groups.google.com/group/rec.crafts.metalworking/t/746b0b20770a9bd0?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 7 2010 1:37 pm
From: stans4@prolynx.com

On Apr 6, 4:19 pm, Wes <clu...@lycos.com> wrote:
> sta...@prolynx.com wrote:
> >Here's a how-to book, "Gears & Gear Cutting" by Ivan Law. Covers
> >small shop techniques.
>
> Ivan's book is excellent. Somehow I have misplaced it in the stacks and boxes of books
> and periodicals I have at home. It is the one book I know I have, that I'd consider
> purchasing again, just because I can't locate it.
>
> Wes

Amazon, $8-9

Stan

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Wednesday, April 7, 2010

rec.crafts.metalworking - 25 new messages in 12 topics - digest

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