Micro Mark sells one:?
--?
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.
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On Mar 22, 2024, at 5:20 PM, Ralph Hulslander <rhulslander@...> wrote:
I'd like to see some pictures of these resistance soldering machines. I am really interested.
Ralph On Fri, Mar 22, 2024 at 7:29?PM Charles Daldry < horologer1@...> wrote:
I bought a resistance soldering machine powerful enough to do
gold soldering for about $35 from an Ebay seller and it was less
than 20 miles from my house.?? I can solder brass tabs onto a
clock bezel fast enough to not discolor the outer surface of the
part.?? If you back off the carbon electrode until it arcs, it
will burn a hole through a hacksaw blade in seconds.?? Quick way
to make 8" long blades for a tiny vintage power hacksaw.
On 3/20/24 09:09, Aaron Woods wrote:
If soldering is an option strengthwise, but the issue is heat,
then you might want to look into resistance soldering. It runs a
current through the metal and the heat is very concentrated to
just the point being soldered. It is popular with model
railroaders working with small delicate pieces. Not cheap by
soldering standards but cheap compared to welders. If you look
around there are also some DIY articles.
|
Just do a Google image search for, "resistance soldering unit".? You'll see lots of them + instructions on how to build one. I got mine at a garage sale, from somebody who used to make metal eyeglass frames. The innards are basically just a fairly hefty low voltage transformer & a small variable auto-transformer? to control power level.
Roy
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I'd like to see some pictures of these resistance soldering machines. I am really interested.
Ralph
On Fri, Mar 22, 2024 at 7:29?PM Charles Daldry < horologer1@...> wrote:
I bought a resistance soldering machine powerful enough to do
gold soldering for about $35 from an Ebay seller and it was less
than 20 miles from my house.?? I can solder brass tabs onto a
clock bezel fast enough to not discolor the outer surface of the
part.?? If you back off the carbon electrode until it arcs, it
will burn a hole through a hacksaw blade in seconds.?? Quick way
to make 8" long blades for a tiny vintage power hacksaw.
On 3/20/24 09:09, Aaron Woods wrote:
If soldering is an option strengthwise, but the issue is heat,
then you might want to look into resistance soldering. It runs a
current through the metal and the heat is very concentrated to
just the point being soldered. It is popular with model
railroaders working with small delicate pieces. Not cheap by
soldering standards but cheap compared to welders. If you look
around there are also some DIY articles.
|
I bought a resistance soldering machine powerful enough to do
gold soldering for about $35 from an Ebay seller and it was less
than 20 miles from my house.?? I can solder brass tabs onto a
clock bezel fast enough to not discolor the outer surface of the
part.?? If you back off the carbon electrode until it arcs, it
will burn a hole through a hacksaw blade in seconds.?? Quick way
to make 8" long blades for a tiny vintage power hacksaw.
On 3/20/24 09:09, Aaron Woods wrote:
toggle quoted message
Show quoted text
If soldering is an option strengthwise, but the issue is heat,
then you might want to look into resistance soldering. It runs a
current through the metal and the heat is very concentrated to
just the point being soldered. It is popular with model
railroaders working with small delicate pieces. Not cheap by
soldering standards but cheap compared to welders. If you look
around there are also some DIY articles.
|
Re: Using nitric acid to remove broken taps or drills from aluminum
Thank you
Main goal is tap removal after the mini lathe breaks the tap.
The book has good data on voltage need?
The data I have found on voltage is 21 to 50 volts.?
In book they used 60 volts and 5 amp. (Using two transformers 30v 5a x2)?
Dave?
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Bill Williams
10:56am? ?
I followed the article serialised in HSM and found it comprehensive and clear. The book is a good way for the serious homme builder to get a professional piece of equipment. There is also a wire EDM book! Bill
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Re: Using nitric acid to remove broken taps or drills from aluminum
I followed the article serialised in HSM and found it comprehensive and clear. The book is a good way for the serious homme builder to get a professional piece of equipment. There is also a wire EDM book! Bill
On Thu, Mar 21, 2024 at 11:04?AM davesmith1800 < davesmith1@...> wrote: Thank for information?
I forgot aboat that book i got as free download from internet
See file section?
Dave?
Bruce J
Mar 20? ?
Linky:
On Mar 20, 2024
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cleaning up from using nitric acid
so Mike what's the clean up process from yer acid test ?
thanks
animal
|
well , I tried
thanks
animal
On 3/21/24 7:13 PM, Johannes Lavoll
wrote:
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?
Mike
Sorry , no export
from Mexico.
Bad experience with
xxS and border bureaucracy.
?
/johannes ?
?
?
There's gonna be some pretty happy kids at yer place on
Christmas . 34's a even number , do ya need my address ?
thanks
animal
?
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? Mike Sorry , no export from Mexico. Bad experience with xxS and border bureaucracy. ? /johannes ? ?
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From: mike allenSent: torsdag 21. mars 2024 18:04 To: [email protected]Subject: Re: [7x12MiniLathe] "welding" ? There's gonna be some pretty happy kids at yer place on Christmas . 34's a even number , do ya need my address ? thanks animal ?
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South central valley.?
On Thursday, March 21, 2024 at 05:18:15 PM PDT, davesmith1800 <davesmith1@...> wrote:
What part of the Central valley are you located?
Dave?
gcvisalia@...
1:43pm? ?
I do get rust here in the calif central valley. Nothing to serious but still there. Have found that oil helps but not perfect. Even gettingvrust on my lathe and mill. Then I got some way oil and used that. During the last 4 months
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What? ? I guess I¡¯ve just been imagining the welds I¡¯ve done with mine. ? Tony ? ?
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From: [email protected] <[email protected]> On Behalf Of davesmith1800
Sent: Friday, 22 March 2024 11:27 AM
To: [email protected]
Subject: Re: [7x12MiniLathe] "welding"? I do see on a welding group where have tell the person a microwave transformer is not big enough for spot welding.?
It takes thousands of amps to weld metal.
YouTube videos work on film only.?
It can stick the metal but will not hold.
You do spot welding with fluxcore?
Dave?
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I do see on a welding group where have tell the person a microwave transformer is not big enough for spot welding.?
It takes thousands of amps to weld metal.
YouTube videos work on film only.?
It can stick the metal but will not hold.
You do spot welding with fluxcore?
Dave?
|
What part of the Central valley are you located?
Dave?
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gcvisalia@...
1:43pm? ?
I do get rust here in the calif central valley. Nothing to serious but still there. Have found that oil helps but not perfect. Even gettingvrust on my lathe and mill. Then I got some way oil and used that. During the last 4 months
|
There's gonna be some pretty happy kids at yer place on Christmas
. 34's a even number , do ya need my address ?
thanks
animal
On 3/21/24 4:04 PM, Johannes wrote:
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Thanks to you all
boys.
I have got many
solutions for ¡°welding¡±, and I am thinking and reading. No
solution is made yet.
Attached is a
picture of what I have to made min 33 of before Christmas
this year.
It is 15 cm long.
All metal is 2 mm
galvanized rod. To made a 1 mm hole is not complicated,
just it take time.
To make a 1 mm tap
is very easy, I have a clockmaker lathe and good cutting
tool.
?
To info: this is a
¡°Ratt-kjelke¡± , it is Norwegian word for ¡°steering wheel
sled¡±
Very popular 70+
years ago.
However, not made
for snow, only ice! You see it has a
brake.
Terrible toy for
children, ?now I think it is forbidden, maybe you can find
it in a museum of horror.
?
?
/Johannes
Mexico
?
?
?
?
?
"you might want to look into resistance
soldering. It runs a current through the metal and the
heat is very concentrated to just the point being
soldered. . . . Not cheap by soldering standards"
I'm wondering, could you use a
soldering gun for this?? They essentially use the same
method. There's a transformer inside the handle that turns
the 110 v. current into low voltage, high amperage current
that runs through the copper tip and heats it.?
So you could connect two cables where
the tip connects and attach their other ends to the
work. That would run the high amperage current through
the joint. The cables would have to be fairly heavy so
they wouldn't get hot themselves, but I don't know how
heavy. (Perhaps speaker cable would work here. It's
heavy gauge supposedly for the best sound quality).
I use a Weller soldering gun (the
same one I've used since getting it for Christmas at age
12, so they're pretty durable!)? That's 100 Watts. I
don't know the wattage you need for resistance
soldering, but if a single soldering gun weren't enough,
you could hook up several.
?
On Wed, Mar 20, 2024, 11:09 AM
Aaron Woods <awoods550@...>
wrote:
If soldering is an option
strengthwise, but the issue is heat, then you might
want to look into resistance soldering. It runs a
current through the metal and the heat is very
concentrated to just the point being soldered. It is
popular with model railroaders working with small
delicate pieces. Not cheap by soldering standards but
cheap compared to welders. If you look around there
are also some DIY articles.
|
Thanks to you all boys. I have got many solutions for ¡°welding¡±, and I am thinking and reading. No solution is made yet. Attached is a picture of what I have to made min 33 of before Christmas this year. It is 15 cm long. All metal is 2 mm galvanized rod. To made a 1 mm hole is not complicated, just it take time. To make a 1 mm tap is very easy, I have a clockmaker lathe and good cutting tool. ? To info: this is a ¡°Ratt-kjelke¡± , it is Norwegian word for ¡°steering wheel sled¡± Very popular 70+ years ago. However, not made for snow, only ice! You see it has a brake. Terrible toy for children, ?now I think it is forbidden, maybe you can find it in a museum of horror. ? ? /Johannes Mexico ? 
? ? ?
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From: Miket_NYCSent: onsdag 20. mars 2024 14:31 To: [email protected]Subject: Re: [7x12MiniLathe] "welding" ? "you might want to look into resistance soldering. It runs a current through the metal and the heat is very concentrated to just the point being soldered. . . . Not cheap by soldering standards" I'm wondering, could you use a soldering gun for this?? They essentially use the same method. There's a transformer inside the handle that turns the 110 v. current into low voltage, high amperage current that runs through the copper tip and heats it.? So you could connect two cables where the tip connects and attach their other ends to the work. That would run the high amperage current through the joint. The cables would have to be fairly heavy so they wouldn't get hot themselves, but I don't know how heavy. (Perhaps speaker cable would work here. It's heavy gauge supposedly for the best sound quality). I use a Weller soldering gun (the same one I've used since getting it for Christmas at age 12, so they're pretty durable!)? That's 100 Watts. I don't know the wattage you need for resistance soldering, but if a single soldering gun weren't enough, you could hook up several. ? On Wed, Mar 20, 2024, 11:09 AM Aaron Woods <awoods550@...> wrote: If soldering is an option strengthwise, but the issue is heat, then you might want to look into resistance soldering. It runs a current through the metal and the heat is very concentrated to just the point being soldered. It is popular with model railroaders working with small delicate pieces. Not cheap by soldering standards but cheap compared to welders. If you look around there are also some DIY articles.
|
I do get rust here in the calif central valley. Nothing to serious but still there. Have found that oil helps but not perfect. Even gettingvrust on my lathe and mill. Then I got some way oil and used that. During the last 4 months I have had no rusted develop on the lathe or mill. I noticed that when it so called dries, it leaves something close to a waxy residue that certainly is working. So now I'm using way oil on everything. Lps 3 is not bad either but not sure it's up there with the way oil. I also use lps 2 a lot.
george
On Thursday, March 21, 2024 at 01:00:21 PM PDT, soffee83 via groups.io <soffee83@...> wrote:
I'm right over beside the OP in Richmond, and can confirm, things went haywire over the last decade. It was so bad and happened so quickly that I initially blamed it on gasses escaping from a jug of copper circuitboard etchant I had, but that was removed and I've been watching a hygrometer I put out there. I think the humidity here is just ridiculous these days. Once I get the room straight, I'm going to move a big clunky dehumidifier that I use in the house out there and replace it with a nice quiet one.
I've been doing as Chuck mentioned with the camphor blocks in any tool drawers or boxes for over a decade, but it's managed to creep into everywhere, including cases of precision measuring tools. I keep the camphor blocks in pill bottles with a bunch of big holes drilled in them. I went on a de-rusting spree a couple years ago and was bringing batches of stuff inside and using Evapo-Rust and abrasives to clean it up, then oiled it really well with motor oil, but that appears to dry up after a while as well. There were still a bunch of larger stationary parts that I couldn't remove or soak, so I bought the brush on version, but it sucks. It's a little tiny bottle of stuff that's about the consistency of partially dried rubber cement. I think I'm going to order that LPS-3 stuff you guys mentioned from the Practical Machinist article, but if I read the right thing, they don't go into much detail and there appears to be several different ones available.
Thanks for all the info!
PS- I've now ordered two batches (4 each) of those cheap little digital hygrometer/thermometer gauges you see online, and have spread them all over the place. They're little black rectangular things, about an inch and a half wide, that run off one or two LR44 batteries. I try to get the ones with both displays the same size, and set for Fahrenheit. Not sure how close they are to the true humidity, but they're very consistent from one unit to the next, so you quickly get a feel for the good or bad levels. The one in the shop can climb up past 80% at times. ? ? ? ?
|
I'm right over beside the OP in Richmond, and can confirm, things went haywire over the last decade. It was so bad and happened so quickly that I initially blamed it on gasses escaping from a jug of copper circuitboard etchant I had, but that was removed and I've been watching a hygrometer I put out there. I think the humidity here is just ridiculous these days. Once I get the room straight, I'm going to move a big clunky dehumidifier that I use in the house out there and replace it with a nice quiet one.
I've been doing as Chuck mentioned with the camphor blocks in any tool drawers or boxes for over a decade, but it's managed to creep into everywhere, including cases of precision measuring tools. I keep the camphor blocks in pill bottles with a bunch of big holes drilled in them. I went on a de-rusting spree a couple years ago and was bringing batches of stuff inside and using Evapo-Rust and abrasives to clean it up, then oiled it really well with motor oil, but that appears to dry up after a while as well. There were still a bunch of larger stationary parts that I couldn't remove or soak, so I bought the brush on version, but it sucks. It's a little tiny bottle of stuff that's about the consistency of partially dried rubber cement. I think I'm going to order that LPS-3 stuff you guys mentioned from the Practical Machinist article, but if I read the right thing, they don't go into much detail and there appears to be several different ones available.
Thanks for all the info!
PS- I've now ordered two batches (4 each) of those cheap little digital hygrometer/thermometer gauges you see online, and have spread them all over the place. They're little black rectangular things, about an inch and a half wide, that run off one or two LR44 batteries. I try to get the ones with both displays the same size, and set for Fahrenheit. Not sure how close they are to the true humidity, but they're very consistent from one unit to the next, so you quickly get a feel for the good or bad levels. The one in the shop can climb up past 80% at times. ? ? ? ?
|
Re: Using nitric acid to remove broken taps or drills from aluminum
Thank for information?
I forgot aboat that book i got as free download from internet
See file section?
Dave?
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Bruce J
Mar 20? ?
Linky: https://secure.villagepress.com/store/items/detail/page/2/item/797
On Mar 20, 2024
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Re: Using nitric acid to remove broken taps or drills from aluminum
The first thing of about 220 volt house voltage is kids and paper clips.
They only do that one time.?
Dave?
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Roy
Mar 20? ?
Don't forget, in the UK & lots of the rest (non US) parts of the world, normal household voltage is 220
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davesmith1800
Johannes
