Today's Message Index:
----------------------
1. 10:17 AM - Re: Re: Tie Wraps For Wire Bundles (Robert L. Nuckolls, III)
2. 11:05 AM - Re: Re: Tie Wraps For Wire Bundles (Alec Myers)
3. 11:08 AM - Re: Re: Solder Station (Robert L. Nuckolls, III)
4. 11:10 AM - Re: AMP 59250 crimper (Robert L. Nuckolls, III)
5. 11:50 AM - Re: Re: Solder Station (C&K)
6. 11:56 AM - Re: Re: Solder Station (Alec Myers)
7. 12:41 PM - metcal solder stations (Christopher Cee Stone)
8. 12:52 PM - Re: Re: Solder Station (Stein Bruch)
9. 01:05 PM - Re: Re: Solder Station (Alec Myers)
10. 04:52 PM - Re: Re: Solder Station (Robert L. Nuckolls, III)
11. 08:35 PM - Re: Re: Solder Station (Art Zemon)
Message 1
INDEX | Back to Main INDEX |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Tie Wraps For Wire Bundles |
At 12:19 PM 2/19/2017, you wrote:
>And believe you me: that postage to US is cheap, you should be over
>this side of the pond ordering from US to UK, unbelievable the cost:
>
>John
Yeah, I'm not sure I have any understanding of
how shipping costs are assessed. It costs more
to ship my books out of the country than the
books cost. I can order stuff off eBay for
a few dollars with free shipping from outside
the country.
Bob . . .
Message 2
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Tie Wraps For Wire Bundles |
A lot of Chinese goods not only are cheap but have free shipping worldwide. I
n fact the actual shipping costs are paid for by the Chinese government, it'
s a kind of hidden subsidy on exports.
On Feb 20, 2017, at 13:13, Robert L. Nuckolls, III <nuckolls.bob@aeroelectri
c.com> wrote:
At 12:19 PM 2/19/2017, you wrote:
> And believe you me: that postage to US is cheap, you should be over this s
ide of the pond ordering from US to UK, unbelievable the cost:
>
> John
Yeah, I'm not sure I have any understanding of
how shipping costs are assessed. It costs more
to ship my books out of the country than the
books cost. I can order stuff off eBay for
a few dollars with free shipping from outside
the country.
Bob . . .
Message 3
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Solder Station |
At 07:42 PM 2/19/2017, you wrote:
>
>My bad - it's not the Curie point. anyone know the physical effect
>that Metcal irons use?
Some form of thermo-sensor at the tip.
The cord out to the tip is multiple
conductors. Replacement heaters
have 4 conductors.
Emacs!
Hakko is quite possibly the Pacific Rim alternative
to Metcal.
I have two Metcal stations left. I've given away
several . . . but depending on my experience over
the next few years with Hakko, I may very well
not replace any Metcal that goes belly up.
I erred earlier, the second Pacific Rim solder
station I have doesn't have Hakko's name on it . . .
although it appears to incorporate similar
technology.
The #2 tool is a combination soldering and hot-
air station.
http://tinyurl.com/j3qosz5
Don't have alot of hours on it yet . . . but I've
got a surface-mount assembly project coming up
where I'll try it out with attaching parts with
solder paste.
The heat wand has proven useful for heat shrinking
and label removal . . . watch this space . . .
Bob . . .
Message 4
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: AMP 59250 crimper |
At 08:14 AM 2/20/2017, you wrote:
>Bob,
>
>Question on the crimper operation
>
>I bought one off eBay some time back. I've looked and looked but
>can't find any documentation covering the exact use of the 4
>position adjustment screw. I see what it does, just not sure what
>position 1-4 corresponds to what crimp. The label is good and
>readable. Any guidance you can offer.
It sets height of crimp on the INSULATION
grip only. For virtually all aircraft
wire, leave it on "1".
If you have occasion to do a crimp on some
wire with obviously thicker insulation (like
automotive PVC), some larger setting may produce
a better looking grip on the insulation.
Bob . . .
Message 5
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Solder Station |
My Weller solder station uses a magnet attached to the back end of the
solder tip. It loses magnetism at the predefined temperature as it
heats. That cycles the power to the heater. It is often referred to as
the Curie temperature of the magnet according to Wiki. You can change
tips for a different temperature.
https://en.wikipedia.org/wiki/Curie_temperature
Ken
On 20/02/2017 2:05 PM, Robert L. Nuckolls, III wrote:
> At 07:42 PM 2/19/2017, you wrote:
>>
>> My bad - it's not the Curie point. anyone know the physical effect
>> that Metcal irons use?
>
> Some form of thermo-sensor at the tip.
> The cord out to the tip is multiple
> conductors. Replacement heaters
> have 4 conductors.
>
> Emacs!
>
> Hakko is quite possibly the Pacific Rim alternative
> to Metcal.
>
> I have two Metcal stations left. I've given away
> several . . . but depending on my experience over
> the next few years with Hakko, I may very well
> not replace any Metcal that goes belly up.
>
> I erred earlier, the second Pacific Rim solder
> station I have doesn't have Hakko's name on it . . .
> although it appears to incorporate similar
> technology.
>
> The #2 tool is a combination soldering and hot-
> air station.
>
> http://tinyurl.com/j3qosz5
>
> <http://tinyurl.com/j3qosz5> Don't have alot of hours on it yet . . .
> but I've
> got a surface-mount assembly project coming up
> where I'll try it out with attaching parts with
> solder paste.
>
> The heat wand has proven useful for heat shrinking
> and label removal . . . watch this space . . .
>
>
> Bob . . .
>
Message 6
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Solder Station |
We must have different MetCal soldering irons, then. My handset is
connected via an RF connector and a length of heat-resistant coax.
The station is a 50Watt 1MHz (I think) RF generator, and the tip
selectively absorbs more RF energy as the temperature drops, and yes, it
was the Curie point effect that's used.
The base station and handset is about USD$1k - but, it's a complete
pleasure to use, from the tiniest SMD component to soldering ring
terminals on 6, 4 or 2 gauge wire - all equally easy.
On 20Feb2017, at 2:05 PM, Robert L. Nuckolls, III
<nuckolls.bob@aeroelectric.com> wrote:
At 07:42 PM 2/19/2017, you wrote:
<alec@alecmyers.com>
>
> My bad - it's not the Curie point. anyone know the physical effect
that Metcal irons use?
Some form of thermo-sensor at the tip.
The cord out to the tip is multiple
conductors. Replacement heaters
have 4 conductors.
<1bd797ce.jpg>
Hakko is quite possibly the Pacific Rim alternative
to Metcal.
I have two Metcal stations left. I've given away
several . . . but depending on my experience over
the next few years with Hakko, I may very well
not replace any Metcal that goes belly up.
I erred earlier, the second Pacific Rim solder
station I have doesn't have Hakko's name on it . . .
although it appears to incorporate similar
technology.
The #2 tool is a combination soldering and hot-
air station.
http://tinyurl.com/j3qosz5
Don't have alot of hours on it yet . . . but I've
got a surface-mount assembly project coming up
where I'll try it out with attaching parts with
solder paste.
The heat wand has proven useful for heat shrinking
and label removal . . . watch this space . . .
Bob . . .
Message 7
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | metcal solder stations |
I did not know this until Bob started a discussion of solder station
technology...
...Chris Stone
Curie point vs. conventional hand soldering technology
5 October 2016 <http://www.dataweek.co.za/default.aspx?pklissueid=1134>,
*Manufacturing
/ Production Technology, Hardware & Services*
Information from Thermaltronics.
With today=99s delicate and complex electronics, temperature accuracy
is a
consistent challenge. Component density, lead size and thermally sensitive
components all combine to make the demands of process control difficult to
meet.
Soldering in electronics assembly processes is primarily used to provide a
convenient joint or connection to ensure electrical contact. Solders do not
typically provide high mechanical strength, given the soft nature of most
common solder materials.
While many of these soldering processes today are automated, there is still
a high demand for hand soldering in the electronics industry, especially
for odd sized components, low-volume applications and repair and rework of
printed circuit boards.
[image: Figure 1. Key elements of a hand soldering process.]
Figure 1. Key elements of a hand soldering process.
To understand how to make a good solder joint or connection, it is first
necessary to understand the conditions necessary to achieve a successful
result.
Soldering is a process by which two metals are joined together with a third
metal or alloy. The third metal or alloy has a much lower melting point
compared to the first two metals. In adhesive joining, adhesives bond by
mechanical attraction, having to do with the mechanical surface properties
of the material being joined, relative to the adhesive.
[image: Figure 2. Oxidation is a common problem with conventional soldering
iron technology.]
Figure 2. Oxidation is a common problem with conventional soldering iron
technology.
In soldering there is also a chemical reaction in addition to the physical
reaction. Therefore, to achieve a good solder joint it is necessary to
consider the following:
*=A2 Intermetallic layer *
*=A2 Solder joint structure *
*=A2 Joint temperature (MIL standard)*
*=A2 Formation of reliable solder joints *
*=A2 Tip temperature vs. joint temperature *
*=A2 Maintenance of the soldering profile (as in a reflow oven)*
*=A2 Heating technology (high-frequency Curie heating vs. conventiona
l
ceramic heater technology)*
One of the most important considerations in hand soldering is the formation
of the intermetallic layer, in other words the chemical joining of the
solder, copper and other materials found in the contact area. Without an
intermetallic layer there is no valid solder joint, but once created it
grows at any temperature and accelerates exponentially as the temperature
increases.
[image: Figure 3. Circuit diagram representing induction heating process.]
Figure 3. Circuit diagram representing induction heating process.
In this soldering process, temperature control is paramount since excessive
heat (overshoot of temperature) will potentially cause differences in the
CTE (coefficient of thermal expansion) and result in brittle or stressed
joints which are then subject to failure.
In general, soldering should be done as quickly as possible, (a 2 =93
5
second window), the lowest possible soldering temperatures should be
selected and repeated soldering of the joint should be avoided. Solder
joint temperature is, therefore, one of the key elements in ensuring a
successful connection.
*MIL-STD (military standard)*
[image: Table 1. MIL-STD soldering temperatures for various solder
formulations.]
Table 1. MIL-STD soldering temperatures for various solder formulations.
According to commonly adopted MIL-STD standards (see Table 1), joint
temperature is the solder melting temperature plus 40=C2=B0C, and the solde
r tip
touches joint for typically 2-5 seconds. For this reason a soldering iron
providing better thermal transfer is capable of using a lower tip
temperature to deliver enough thermal energy to form a reliable solder
joint.
Soldering irons with less efficient thermal transfer properties will
require higher temperatures to achieve the same result =93 but at the
risk of
forming a thicker metallic layer which will be prone to failure under
stress and also potentially causing damage to sensitive components and the
pad. This requirement for efficient thermal transfer was exemplified in
2003 with the introduction of RoHS and the need to meet the higher demands
of lead-free solders.
[image: Figure 4. Curie Heat technology avoids the oxidation suffered by
conventional soldering iron heating technology.]
Figure 4. Curie Heat technology avoids the oxidation suffered by
conventional soldering iron heating technology.
Most hand soldering iron companies responded by trying to improve heat
transfer or by increasing solder melt temperatures. However, in doing so,
other problems were created, for example solder splatter, decreased tip
life, tip-to-ground resistance issues, tip-to-ground voltage leakage
problems, and overshoot of temperature.
In part this is due to the design of conventional technology soldering
irons which rely on a thermocouple, with a dial or LCD display to control
temperature and which require regular calibration to ensure a minimum of
accuracy. However, all the problems associated with conventional soldering
irons can be avoided by adopting Thermaltronics Curie Heat technology.
Those familiar with the phrase =98Curie point=99 will know that
every magnetic
alloy, when heated, will, at a certain temperature, lose its magnetism.
Therefore, by a simple method of using different magnetic alloys, combined
with an induction heating process, Thermaltronics has created a range of
soldering systems which can meet the soldering demands of but with none of
the pitfalls of conventional soldering irons.
The heart of the Thermaltronics high-frequency soldering system is the
combined tip/cartridge which incorporates the magnetic alloy heater, the
centre of which is made of copper. Different magnetic alloys are used to
achieve differing temperatures but at idle (while in the soldering stand)
the temperature of an individual tip/cartridge will be maintained within
the range of =C2=B11,1=C2=B0C. (Temperatures of individual tips will vary d
ue to the
amount of copper mass but each tip will still maintain its own unique
temperature profile within a defined range.)
When power is generated from a Thermaltronics power supply, current flows
through the handpiece (on the surface of the magnetic alloy) and will, in
turn, induce heat. However, once the Curie point is reached and the
magnetism is lost, the current can no longer flow and as a consequence the
alloy will cool. In so doing the magnetism returns and the heating process
starts all over again.
Needless to say all this is happening in microseconds and, as shown in
Figure 5, it is repeatable and by far the most efficient way to control
temperature. Basically it boils down to pure physics, i.e., it is not
reliant on dials, thermocouples or other control mechanisms.
[image: Figure 5. Illustration of the Curie point heating process.]
<http://www.dataweek.co.za/articles/Dataweek%20-%20Published%20by%20Technew
s/k3694e.jpg>
Figure 5. Illustration of the Curie point heating process.
Credit(s)
Supplied By: Zetech
<http://www.dataweek.co.za/supplier.aspx?buyersguideid=8&acc=0629>
Tel: +27 11 789 3230 <+27-11-789-3230>
Fax: +27 11 789 3233
Email: zetech@zetech.co.za <zetech@zetech.co.za?subject=Referral from
dataweek.co.za&body=Dear Zetech,%0D%0AI read the article %22Curie point v
s.
conventional hand soldering technology%22 on the Dataweek website
(http://www.dataweek.co.za/55659N) and have the following
query/comment:%0D%0A%0D%0A>
www:
www.zetech.co.za
Message 8
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Solder Station |
The older Metal's use the multi conductor cable (we have a number of them)
and the newer ones use the connector as shown below. Indeed that brand
(OKI/Metcal) is one of the better solder stations out there (in my biased
opinion)- Weller also makes some really nice solder stations (as does
Hakko). We happen to use Metcal's in our shop because that's just what we
started with many years ago. That said, none of the higher end units are
cheap - and really not something the average consumer really needs at all.
There are a pile of sub $200 units out there that will more than work
acceptably for the average person not doing production type work.
Cheers,
Stein
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Alec
Myers
Sent: Monday, February 20, 2017 1:49 PM
Subject: Re: AeroElectric-List: Re: Solder Station
We must have different MetCal soldering irons, then. My handset is
connected via an RF connector and a length of heat-resistant coax.
The station is a 50Watt 1MHz (I think) RF generator, and the tip selectively
absorbs more RF energy as the temperature drops, and yes, it was the Curie
point effect that's used.
The base station and handset is about USD$1k - but, it's a complete pleasure
to use, from the tiniest SMD component to soldering ring terminals on 6, 4
or 2 gauge wire - all equally easy.
On 20Feb2017, at 2:05 PM, Robert L. Nuckolls, III
<nuckolls.bob@aeroelectric.com <mailto:nuckolls.bob@aeroelectric.com> >
wrote:
At 07:42 PM 2/19/2017, you wrote:
<mailto:alec@alecmyers.com> >
My bad - it's not the Curie point. anyone know the physical effect that
Metcal irons use?
Some form of thermo-sensor at the tip.
The cord out to the tip is multiple
conductors. Replacement heaters
have 4 conductors.
<1bd797ce.jpg>
Hakko is quite possibly the Pacific Rim alternative
to Metcal.
I have two Metcal stations left. I've given away
several . . . but depending on my experience over
the next few years with Hakko, I may very well
not replace any Metcal that goes belly up.
I erred earlier, the second Pacific Rim solder
station I have doesn't have Hakko's name on it . . .
although it appears to incorporate similar
technology.
The #2 tool is a combination soldering and hot-
air station.
http://tinyurl.com/j3qosz5
Don't have alot of hours on it yet . . . but I've
got a surface-mount assembly project coming up
where I'll try it out with attaching parts with
solder paste.
The heat wand has proven useful for heat shrinking
and label removal . . . watch this space . . .
Bob . . .
Message 9
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Solder Station |
Interesting point of comparison: the expensive Metcal station is still only 7
0% of the list price of the AMP crimp tool Bob has been recommending.
> On Feb 20, 2017, at 3:49 PM, Stein Bruch <stein@steinair.com> wrote:
>
> The older Metal=99s use the multi conductor cable (we have a number o
f them) and the newer ones use the connector as shown below. Indeed that bra
nd (OKI/Metcal) is one of the better solder stations out there (in my biased
opinion)=93 Weller also makes some really nice solder stations (as do
es Hakko). We happen to use Metcal=99s in our shop because that
=99s just what we started with many years ago. That said, none of the highe
r end units are cheap =93 and really not something the average consume
r really needs at all. There are a pile of sub $200 units out there that wi
ll more than work acceptably for the average person not doing production typ
e work.
>
> Cheers,
> Stein
>
>
> From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelect
ric-list-server@matronics.com] On Behalf Of Alec Myers
> Sent: Monday, February 20, 2017 1:49 PM
> To: aeroelectric-list@matronics.com
> Subject: Re: AeroElectric-List: Re: Solder Station
>
> We must have different MetCal soldering irons, then. My handset is connec
ted via an RF connector and a length of heat-resistant coax.
> The station is a 50Watt 1MHz (I think) RF generator, and the tip selective
ly absorbs more RF energy as the temperature drops, and yes, it was the Curi
e point effect that's used.
>
>
> <image001.jpg>
>
> The base station and handset is about USD$1k - but, it's a complete pleasu
re to use, from the tiniest SMD component to soldering ring terminals on 6, 4
or 2 gauge wire - all equally easy.
>
>
> On 20Feb2017, at 2:05 PM, Robert L. Nuckolls, III <nuckolls.bob@aeroelectr
ic.com> wrote:
>
> At 07:42 PM 2/19/2017, you wrote:
>
>
> My bad - it's not the Curie point. anyone know the physical effect that Me
tcal irons use?
>
> Some form of thermo-sensor at the tip.
> The cord out to the tip is multiple
> conductors. Replacement heaters
> have 4 conductors.
>
> <1bd797ce.jpg>
>
> Hakko is quite possibly the Pacific Rim alternative
> to Metcal.
>
> I have two Metcal stations left. I've given away
> several . . . but depending on my experience over
> the next few years with Hakko, I may very well
> not replace any Metcal that goes belly up.
>
> I erred earlier, the second Pacific Rim solder
> station I have doesn't have Hakko's name on it . . .
> although it appears to incorporate similar
> technology.
>
> The #2 tool is a combination soldering and hot-
> air station.
>
> http://tinyurl.com/j3qosz5
>
> Don't have alot of hours on it yet . . . but I've
> got a surface-mount assembly project coming up
> where I'll try it out with attaching parts with
> solder paste.
>
> The heat wand has proven useful for heat shrinking
> and label removal . . . watch this space . . .
>
>
> Bob . . .
>
Message 10
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Solder Station |
At 01:47 PM 2/20/2017, you wrote:
>
>My Weller solder station uses a magnet attached to the back end of
>the solder tip. It loses magnetism at the predefined temperature as
>it heats. That cycles the power to the heater. It is often referred
>to as the Curie temperature of the magnet according to Wiki. You can
>change tips for a different temperature.
The Weller WTCPT solder stations go WAaayyyy back. I took
a hiatus from Electro-Mech to go work in the video industry.
What an education that was! The chief engineer I went to
work for had the WTCPT stations in his lab. I was so
impressed with them that I fitted every assembly station
on the production line with them.
When I went back to Electro-Mech a few years later, I
hit up the boss about fitting our production line with
these leading edge tools. I needed 12 stations and
I think they were about $100 each at the time.
He balked at that big an expenditure. So I asked him
what kind of budget I could have to upgrade the line
from the 25w, non-controlled irons.
He offered me $600.
A few weeks later he came into my office in a bit
of a huff wondering where I got off blowing the
budget on WTCPT stations. I was a bit taken aback,
I in fact spent considerably less than then
funds budgeted.
I discovered that the station base contained
only a 24v, 2A transformer. Replacement
wands for the station were $25 or thereabouts.
So I went down to Elmer Travis' surplus store on
N. Broadway and bought two big honker 24v transformers.
I think they were 15A for $20 each. I wired the
benches for 24VAC distribution and installed
those really cool irons at each work station.
I think I got it all done for under $500 including
my labor to hook 'em up.
I was introduced to Metcal at Beech. But until
I too could afford to acquire them, my own benches
were fitted with WTCPT repair wands and junk box
transformers.
Bob . . .
Message 11
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Solder Station |
Boy I wish I had known this story before I dropped $140 on my own Weller
WTCPT station. :-)
-- Art Z.
On Mon, Feb 20, 2017 at 6:45 PM, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 01:47 PM 2/20/2017, you wrote:
>
>
> My Weller solder station uses a magnet attached to the back end of the
> solder tip. It loses magnetism at the predefined temperature as it heats.
> That cycles the power to the heater. It is often referred to as the Curie
> temperature of the magnet according to Wiki. You can change tips for a
> different temperature.
>
>
> The Weller WTCPT solder stations go WAaayyyy back. I took
> a hiatus from Electro-Mech to go work in the video industry.
> What an education that was! The chief engineer I went to
> work for had the WTCPT stations in his lab. I was so
> impressed with them that I fitted every assembly station
> on the production line with them.
>
> When I went back to Electro-Mech a few years later, I
> hit up the boss about fitting our production line with
> these leading edge tools. I needed 12 stations and
> I think they were about $100 each at the time.
>
> He balked at that big an expenditure. So I asked him
> what kind of budget I could have to upgrade the line
> from the 25w, non-controlled irons.
>
> He offered me $600.
>
> A few weeks later he came into my office in a bit
> of a huff wondering where I got off blowing the
> budget on WTCPT stations. I was a bit taken aback,
> I in fact spent considerably less than then
> funds budgeted.
>
> I discovered that the station base contained
> only a 24v, 2A transformer. Replacement
> wands for the station were $25 or thereabouts.
>
> So I went down to Elmer Travis' surplus store on
> N. Broadway and bought two big honker 24v transformers.
> I think they were 15A for $20 each. I wired the
> benches for 24VAC distribution and installed
> those really cool irons at each work station.
> I think I got it all done for under $500 including
> my labor to hook 'em up.
>
> I was introduced to Metcal at Beech. But until
> I too could afford to acquire them, my own benches
> were fitted with WTCPT repair wands and junk box
> transformers.
>
>
> Bob . . .
>
--
https://CheerfulCurmudgeon.com/
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|