I'm just beginning to understand why the turners seem so enthusiastic.

It's not wood, but it came out right the first time!

http://www.iedu.com/DeSoto/Projects/.../InlineV1.html

Photos at bottom of page.

Next up: learning to braze with an oxy-acetylene torch...

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

"Morris Dovey" wrote in message
...

Next up: learning to braze with an oxy-acetylene torch...


Much like soldering. Distribute the heat where it needs go and the (fluxxed)
braze will flow nicely Don't tough the tip to the work! ; )
In my (limited) experience, the faster you get it done, within reason, the
better it will look. Incidentally, in one related experiment I did, I
noticed the heat caused the the garage floor to disintegrate. That happened
30 years ago, but I suspect garage floors haven't changed that much!
Probably you already know all this, but I enjoyed writing about it. Have
fun!

Bill





--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

On 5/5/2010 7:51 PM, Bill wrote:
"Morris wrote in message
...

Next up: learning to braze with an oxy-acetylene torch...

Much like soldering. Distribute the heat where it needs go and the (fluxxed)
braze will flow nicely Don't tough the tip to the work! ; )
In my (limited) experience, the faster you get it done, within reason, the
better it will look. Incidentally, in one related experiment I did, I
noticed the heat caused the the garage floor to disintegrate. That happened
30 years ago, but I suspect garage floors haven't changed that much!
Probably you already know all this, but I enjoyed writing about it. Have
fun!

I've watched a number of YouTube videos, and it does look much like
soldering. My plan was to hold the long tube vertical in my vise and
braze the brass fitting into place - then, before it could cool, stack
on the short tube and braze that to the top of the brass fitting. Then,
after everything had cooled to room temperature, add the cap to the top
of the short tube and braze that in place.

Actually, I hardly know anything at all about what I'm doing - and AFAIK
no one has ever built a pump engine like this before. It's a great
adventure. If it works as expected, the next version will be solar
powered with an operating temperature ~1000°F.

The shop floor will remain safe for a little while longer.

Thanks for the speed advice - and for the warning about concrete!

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

"Morris Dovey" wrote in message
...
On 5/5/2010 7:51 PM, Bill wrote:
"Morris wrote in message
...

Next up: learning to braze with an oxy-acetylene torch...

Much like soldering. Distribute the heat where it needs go and the
(fluxxed)
braze will flow nicely Don't tough the tip to the work! ; )
In my (limited) experience, the faster you get it done, within reason,
the
better it will look. Incidentally, in one related experiment I did, I
noticed the heat caused the the garage floor to disintegrate. That
happened
30 years ago, but I suspect garage floors haven't changed that much!
Probably you already know all this, but I enjoyed writing about it. Have
fun!

I've watched a number of YouTube videos, and it does look much like
soldering. My plan was to hold the long tube vertical in my vise and braze
the brass fitting into place - then, before it could cool, stack on the
short tube and braze that to the top of the brass fitting. Then, after
everything had cooled to room temperature, add the cap to the top of the
short tube and braze that in place.

Actually, I hardly know anything at all about what I'm doing - and AFAIK
no one has ever built a pump engine like this before. It's a great
adventure. If it works as expected, the next version will be solar powered
with an operating temperature ~1000°F.

The shop floor will remain safe for a little while longer.

Thanks for the speed advice - and for the warning about concrete!


The melting point of brass is about 1700 degrees and that of stell is about
2700 degrees (see
http://www.muggyweld.com/melting.html ).

That makes your brazing problem much more delicate, I think, than the ones I
worked on.
You will use a brass brazing rod of course, and I'm sure you will practice
with the material
before you apply the heat to your good one. Alot like me and my M&T
joints..! : )

Bill



--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

On 5/6/2010 3:19 PM, Bill wrote:

The melting point of brass is about 1700 degrees and that of steel is
about 2700 degrees (see http://www.muggyweld.com/melting.html ).

That makes your brazing problem much more delicate, I think, than the
ones I worked on. You will use a brass brazing rod of course, and I'm
sure you will practice with the material before you apply the heat to
your good one. Alot like me and my M&T joints..! : )

I'm planning to do my practice after the fact. My SO's grandson's
father-in-law has offered to let me watch while he demonstrates how it's
done.

I'll take along a second set of parts so that I can build a second
engine under his supervision.

I figure that all except one of 'em will be beautiful. ;-)

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/

On 2010-05-06 16:37:28 -0400, Morris Dovey said:

I'll take along a second set of parts so that I can build a second
engine under his supervision.

I figure that all except one of 'em will be beautiful. ;-)

Pardon my ingorance (even after checking Wikipedia), but just what does
an in-line fluidyne engine do? And what's the action of the solar
component? Heatin' stuff up?

How big is that little metal lathe ???

Morris Dovey wrote:

I'm just beginning to understand why the turners seem so enthusiastic.

It's not wood, but it came out right the first time!

http://www.iedu.com/DeSoto/Projects/.../InlineV1.html

Photos at bottom of page.

Next up: learning to braze with an oxy-acetylene torch...

On 5/6/2010 3:13 PM, Pat Barber wrote:
How big is that little metal lathe ???

It's the HF 7x10 (identical to same size from Griz, etc)

If you're thinking of buying a small lathe and can afford to spend just
a little bit more (I couldn't), this 7x14 looks like a better buy:

http://www.micromark.com/MICROLUX-7X...ATHE,8176.html

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/