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Re: Turning Brass on 7x16?

 

The main things are no top rake & stoning a tiny flat (instead of a sharp edge) on drill bits.? Those sharpening differences keep the tool from pulling itself into the work.
?
Roy
Re: Large work holding

 

The 95/5 alloy is the nicest Pb free plumbing solder! I still miss the Cd containing brazing alloys for their ease of use; that's with my head - the rest of the innards are happier not being exposed to it.
?
Roy
Re: Large work holding

 

I try to avoid the phrase "silver solder" nowadays because people use it to mean two entirety different things: silver brazing alloys and soft solder that's 5% silver and 95% tin. The latter is just one of the many lead-free soldiers used in plumbing now, but manufacturers love to call it "silver solder" on the package because it sounds so elegant and fancy.??

So now I always say "silver brazing alloy" or "5% silver solder."? ?No point in confusing people.

Mike Taglieri?


On Sat, Sep 21, 2024, 9:28 AM terry.moore50 via <terryimoore=[email protected]> wrote:
Don¡¯t forget silver soldering. A number of model boilers are sealed using easy flow flux with silver solder. You can¡¯t mix it with soft solder though! Any old soft solder residue has to be completely removed which is not easily accomplished. Terry UK.
Re: Turning Brass on 7x16?

 

I turn brass all of the time on my mini lathe.
Use high-speed steel tool bits.
High-speed steel can be sharpened better than carbide tools.
This is a mini lathe, so cutting speed is not too critical.
Regards,
John Mattis (retired mechanical engineer)

On Sat, Sep 21, 2024 at 5:46?AM CBJessee-N4SRN via <cbjesseeNH=[email protected]> wrote:
I made a 5in brass cannon from 1.25" C360 brass on a big Southbend lathe at my local Markerspace and plan to try it again on my LMS 7x16. What tooling and speeds are recommended?
Re: Turning Brass on 7x16?

 

C360 turns nice with flat on top HSS on the 7x in my experience. Really sharp with a tiny nose radius worked great for me. I turned almost 50 feet of 3/8" into little 1/2" long orifices and never found anything that cut as well as flat HSS. It did not like carbide or any top rake on the steel in my experience. I spun it around 8 to 900 rpm and fed .002" per rev and got a really nice surface finish.?

Ryan
On Sep 21, 2024 at 8:46?AM -0400, CBJessee-N4SRN via groups.io <cbjesseenh@...>, wrote:

I made a 5in brass cannon from 1.25" C360 brass on a big Southbend lathe at my local Markerspace and plan to try it again on my LMS 7x16. What tooling and speeds are recommended?
Re: Brazing (was: Re: Large work holding)

 

Mike,
Yes, a welder can provide the juice. I have a carbon arc torch (cheap one) that I've used quite a bit with my AC arc welder. Gives you a lot more heat than gas torches.
Roger Cardon
Re: Large work holding

 

Don¡¯t forget silver soldering. A number of model boilers are sealed using easy flow flux with silver solder. You can¡¯t mix it with soft solder though! Any old soft solder residue has to be completely removed which is not easily accomplished. Terry UK.
Turning Brass on 7x16?

 

I made a 5in brass cannon from 1.25" C360 brass on a big Southbend lathe at my local Markerspace and plan to try it again on my LMS 7x16. What tooling and speeds are recommended?
Brazing (was: Re: Large work holding)

 

I have the same problem, and at times (on motorcycle parts,? which are bigger), I've brazed with the work sitting on the burner of the gas stove I have in my basement, with that heat coming up from underneath, TWO propane or MAPP torches up top, and firebricks everywhere to keep the heat in.? That gave borderline enough heat, but if I'd had a third arm I'd have used another torch.

I have a variable power induction welder and using two carbon electrodes the way Jacques does is also something I've contemplated. I've also seen those PM articles, but I think the electrode holders are the only thing I'd need to make, right? Could a welder provide the juice?

Mike Taglieri?



On Fri, Sep 20, 2024, 4:38 PM Ralph Hulslander via <rhulslander=[email protected]> wrote:
I can "solder" in my sleep but have had problems with brazing. My first limitation is I only have a Turbo torch not oxy acetylene.

On Fri, Sep 20, 2024 at 3:42?PM Bruce J via <bruce.desertrat=[email protected]> wrote:
And honestly the only difference between ¡®brazing¡¯ and ¡¯soldering¡¯¡­is the temperature.?

Both are the same process: joining metal by melting a metal of a lower melting point to ¡®wet¡¯ the metal to be joined with the aid of a flux.

Cleanliness, flux, heat.?


On Sep 20, 2024, at 10:01?AM, Miket_NYC via <mctaglieri=[email protected]> wrote:

Actually, that old plumber's "3 basic rules" apply just as well to brazing as to soft soldering. You're just using different flux and (a lot) more heat.

Mike Taglieri?

On Fri, Sep 20, 2024, 12:46 PM Ralph Hulslander via <rhulslander=[email protected]> wrote:
You do not want to "solder" a steam boiler! You need to braze it.

I do have to admit I have soldered a steam coil which was not directly fired.

Ralph

On Thu, Sep 19, 2024 at 9:07?PM Roy via <roylowenthal=[email protected]> wrote:
The old plumber who taught me to solder had 3 basic rules:
?
?1. Cleanliness is the key to success - surfaces to be soldered MUST be cleaned to bright, shiny metal.
?
?2. Flux is your friend - apply it to all surfaces before heating.
?
?3. Solder flows towards the heat source - that was before hot melt glue guns were common.? The basic idea was to apply heat to the area you want the solder to flow towards, not the outer surface.
?
Roy





--?
Bruce Johnson

The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.

Re: Large work holding

 

For a lot of small projects a Turbo Torch using MAPP gas works fine. The conversion requires replacing the metering orifice with the MAPP specific one.
?
Roy
Re: Large work holding

 

I've heard brazing referred to as hard soldering, mostly in the AC&R field when using a silver alloy filler rod.
?
Roy
?
Re: Large work holding

 

¿ªÔÆÌåÓý

There¡¯s been a couple of plans in Popular Mechanics over the decades for making one of those carbon arc welders. They can be used for brazing.

I think have a copy of the articles at home; if I remember I¡¯ll post the pdf I made. (Not feeling the greatest¡­had a molar extracted today and the novocaine has worn off)

On Sep 20, 2024, at 2:08?PM, Jacques Savard via groups.io <jacquessavard@...> wrote:

?
I have? a vintage? old? welding? electric? machine
?
only a transformer? ?and? tip
BUT?
he said? you? can do? ''broading? ''? put x2? tip? of? carbone? ?like? the onle? in? D batt? zink carbone
onr
?
about? 1\4? size
?
and there is? the method?
just? put? the end? near? ? a? beautufull? arch appear? ?and if you? make? a? distence betting? you got a powerfull plasma?
?
they? you can welding? or cut? everything? ?low? tmeps? or? higt? ?or? just? spot? welding?
?
I put a big? variac? befor? the? set? up alos?
?
like this? i can? control? the power? of? plasma??
?
be? carfull? put? good? welding? glass? it is? very? very? bright
?
jack 4771

--?
Bruce Johnson

The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.

Re: Large work holding

 

?
I have? a vintage? old? welding? electric? machine
?
only a transformer? ?and? tip
BUT?
he said? you? can do? ''broading? ''? put x2? tip? of? carbone? ?like? the onle? in? D batt? zink carbone
onr
?
about? 1\4? size
?
and there is? the method?
just? put? the end? near? ? a? beautufull? arch appear? ?and if you? make? a? distence betting? you got a powerfull plasma?
?
they? you can welding? or cut? everything? ?low? tmeps? or? higt? ?or? just? spot? welding?
?
I put a big? variac? befor? the? set? up alos?
?
like this? i can? control? the power? of? plasma??
?
be? carfull? put? good? welding? glass? it is? very? very? bright
?
jack 4771
Re: Large work holding

 

I have? a vintage? old? welding? electric? machine

only a transformer? ?and? tip
BUT?
he said? you? can do? ''broading? ''? put x2? tip? of? carbone? ?like? the onle? in? D batt? zink carbone
onr

about? 1\4? size

and there is? the method?
just? put? the end? near? ? a? beautufull? arch appear? ?and if you? make? a? distence betting? you got a powerfull plasma?

they? you can welding? or cut? everything? ?low? tmeps? or? higt? ?or? just? spot? welding?

I put a big? variac? befor? the? set? up alos?

like this? i can? control? the power? of? plasma??

be? carfull? put? good? welding? glass? it is? very? very? bright

jack 4771
Re: Large work holding

 

I can "solder" in my sleep but have had problems with brazing. My first limitation is I only have a Turbo torch not oxy acetylene.


On Fri, Sep 20, 2024 at 3:42?PM Bruce J via <bruce.desertrat=[email protected]> wrote:
And honestly the only difference between ¡®brazing¡¯ and ¡¯soldering¡¯¡­is the temperature.?

Both are the same process: joining metal by melting a metal of a lower melting point to ¡®wet¡¯ the metal to be joined with the aid of a flux.

Cleanliness, flux, heat.?


On Sep 20, 2024, at 10:01?AM, Miket_NYC via <mctaglieri=[email protected]> wrote:

Actually, that old plumber's "3 basic rules" apply just as well to brazing as to soft soldering. You're just using different flux and (a lot) more heat.

Mike Taglieri?

On Fri, Sep 20, 2024, 12:46 PM Ralph Hulslander via <rhulslander=[email protected]> wrote:
You do not want to "solder" a steam boiler! You need to braze it.

I do have to admit I have soldered a steam coil which was not directly fired.

Ralph

On Thu, Sep 19, 2024 at 9:07?PM Roy via <roylowenthal=[email protected]> wrote:
The old plumber who taught me to solder had 3 basic rules:
?
?1. Cleanliness is the key to success - surfaces to be soldered MUST be cleaned to bright, shiny metal.
?
?2. Flux is your friend - apply it to all surfaces before heating.
?
?3. Solder flows towards the heat source - that was before hot melt glue guns were common.? The basic idea was to apply heat to the area you want the solder to flow towards, not the outer surface.
?
Roy





--?
Bruce Johnson

The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.

Re: Large work holding

 

¿ªÔÆÌåÓý

And honestly the only difference between ¡®brazing¡¯ and ¡¯soldering¡¯¡­is the temperature.?

Both are the same process: joining metal by melting a metal of a lower melting point to ¡®wet¡¯ the metal to be joined with the aid of a flux.

Cleanliness, flux, heat.?


On Sep 20, 2024, at 10:01?AM, Miket_NYC via groups.io <mctaglieri@...> wrote:

Actually, that old plumber's "3 basic rules" apply just as well to brazing as to soft soldering. You're just using different flux and (a lot) more heat.

Mike Taglieri?

On Fri, Sep 20, 2024, 12:46 PM Ralph Hulslander via <rhulslander=[email protected]> wrote:
You do not want to "solder" a steam boiler! You need to braze it.

I do have to admit I have soldered a steam coil which was not directly fired.

Ralph

On Thu, Sep 19, 2024 at 9:07?PM Roy via <roylowenthal=[email protected]> wrote:
The old plumber who taught me to solder had 3 basic rules:
?
?1. Cleanliness is the key to success - surfaces to be soldered MUST be cleaned to bright, shiny metal.
?
?2. Flux is your friend - apply it to all surfaces before heating.
?
?3. Solder flows towards the heat source - that was before hot melt glue guns were common.? The basic idea was to apply heat to the area you want the solder to flow towards, not the outer surface.
?
Roy





--?
Bruce Johnson

The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.

Re: Large work holding

 

Actually, that old plumber's "3 basic rules" apply just as well to brazing as to soft soldering. You're just using different flux and (a lot) more heat.

Mike Taglieri?

On Fri, Sep 20, 2024, 12:46 PM Ralph Hulslander via <rhulslander=[email protected]> wrote:
You do not want to "solder" a steam boiler! You need to braze it.

I do have to admit I have soldered a steam coil which was not directly fired.

Ralph

On Thu, Sep 19, 2024 at 9:07?PM Roy via <roylowenthal=[email protected]> wrote:
The old plumber who taught me to solder had 3 basic rules:
?
?1. Cleanliness is the key to success - surfaces to be soldered MUST be cleaned to bright, shiny metal.
?
?2. Flux is your friend - apply it to all surfaces before heating.
?
?3. Solder flows towards the heat source - that was before hot melt glue guns were common.? The basic idea was to apply heat to the area you want the solder to flow towards, not the outer surface.
?
Roy
Re: Large work holding

 

You do not want to "solder" a steam boiler! You need to braze it.

I do have to admit I have soldered a steam coil which was not directly fired.

Ralph

On Thu, Sep 19, 2024 at 9:07?PM Roy via <roylowenthal=[email protected]> wrote:
The old plumber who taught me to solder had 3 basic rules:
?
?1. Cleanliness is the key to success - surfaces to be soldered MUST be cleaned to bright, shiny metal.
?
?2. Flux is your friend - apply it to all surfaces before heating.
?
?3. Solder flows towards the heat source - that was before hot melt glue guns were common.? The basic idea was to apply heat to the area you want the solder to flow towards, not the outer surface.
?
Roy
Re: Large work holding

 

The old plumber who taught me to solder had 3 basic rules:
?
?1. Cleanliness is the key to success - surfaces to be soldered MUST be cleaned to bright, shiny metal.
?
?2. Flux is your friend - apply it to all surfaces before heating.
?
?3. Solder flows towards the heat source - that was before hot melt glue guns were common.? The basic idea was to apply heat to the area you want the solder to flow towards, not the outer surface.
?
Roy
Re: Large work holding

 

Johannes,
I am not very good at soldering and I am scared of boilers bursting so I use a small air compressor to run my steam engines.?
Yes the plans were converted to metric by Mr. J. de Waal in New Zealand, he has a lot of plans on his site which is shown at the bottom of the plans.
I prefer to work in metric if I can but most plans are either old British plans or American plans and then I work in imperial.
Regards
?
Dave
Borneo
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