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Further saga of the Bernina 950

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Claire in France

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Jan 8, 2014, 9:25:48 AM1/8/14
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I have had more problems with my Bernina 950.
Having cured the timing in May I then had a broken cog in August. I
then had a repeat of the looping of the threads underneath which then
threw the timing out on the machine in the beginning of December.

I finally got to take the machine to my service man, 2 hour round trip,
on Tuesday and he fixed the timing while I waited. He is puzzled as to
why I having so much trouble with a Bernina.

So far he has only seen the machine alone and is now worried that my
table mounted motor may be too big it's 2850 Revs per min. and he thinks
this machine would be better with a motor that works at 1400.He thinks
that the fast off the block start could be throwing the thread out of
the tension discs.
The other thing we haven't ruled out is the tension block it seems good
in general use but he wants me to check if I can pull the thread through
the tension discs when I get a birds nest underneath. Usually I am so
wanting to unblock the machine that I haven't checked that, I hope I
won't have to.

I love this machine when it works well but I am reluctant to spend yet
again to change the motor, it will be the best part of 500 �uros. Does
anyone think it's really going to make a massive difference? I
understand my service man's theory but is it just clutching at straws
for reasons ?
--
Claire in Montreal FRANCE
www.claireowenperso.free.fr

Ron Anderson

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Jan 8, 2014, 10:35:23 AM1/8/14
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"Claire in France" <cla...@dontbotheritsinvalid.com> wrote in message
news:lajn5e$6ak$1...@news.datemas.de...
>
> I have had more problems with my Bernina 950.
> Having cured the timing in May I then had a broken cog in August. I
> then had a repeat of the looping of the threads underneath which then
> threw the timing out on the machine in the beginning of December.
>
> I finally got to take the machine to my service man, 2 hour round trip,
> on Tuesday and he fixed the timing while I waited. He is puzzled as to
> why I having so much trouble with a Bernina.
>
> So far he has only seen the machine alone and is now worried that my
> table mounted motor may be too big it's 2850 Revs per min. and he thinks
> this machine would be better with a motor that works at 1400.He thinks
> that the fast off the block start could be throwing the thread out of
> the tension discs.
> The other thing we haven't ruled out is the tension block it seems good
> in general use but he wants me to check if I can pull the thread through
> the tension discs when I get a birds nest underneath. Usually I am so
> wanting to unblock the machine that I haven't checked that, I hope I
> won't have to.
>
> I love this machine when it works well but I am reluctant to spend yet
> again to change the motor, it will be the best part of 500 �uros. Does
> anyone think it's really going to make a massive difference? I
> understand my service man's theory but is it just clutching at straws
> for reasons ?
> --
> Claire in Montreal FRANCE
> www.claireowenperso.free.fr

Claire that motor is to fast for that machine. Remember the 950 is basically
a home sewing machine. The low speed motor is advised. The high speed will
sooner than later destroy the machine completely.

--
Ron Anderson A1 Sewing Machine
18 Dingman Rd Sand Lake, NY 12153
http://www.a1sewingmachine.com
www.facebook.com/A1SewingMachineSpecialists



BEI Design

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Jan 8, 2014, 11:55:41 AM1/8/14
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Ron Anderson wrote:
> "Claire in France" <cla...@dontbotheritsinvalid.com> wrote in
> [...] Claire that motor is to fast for that machine. Remember the
> 950 is
> basically a home sewing machine. The low speed motor is advised.
> The high speed will sooner than later destroy the machine
> completely.

Ron, I'm curious, is there no way to slow the motor down? Maybe a
rheostat or something? Or would that just make matters worse?

--
Beverly
http://www.ickes.us




David Scheidt

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Jan 8, 2014, 12:05:44 PM1/8/14
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Claire in France <cla...@dontbotheritsinvalid.com> wrote:

:I have had more problems with my Bernina 950.
:Having cured the timing in May I then had a broken cog in August. I
:then had a repeat of the looping of the threads underneath which then
:threw the timing out on the machine in the beginning of December.

:I finally got to take the machine to my service man, 2 hour round trip,
:on Tuesday and he fixed the timing while I waited. He is puzzled as to
:why I having so much trouble with a Bernina.

The only thing 'Bernina' about a 950 is the sticker, and the price
sticker.

:I love this machine when it works well but I am reluctant to spend yet
:again to change the motor, it will be the best part of 500 €uros. Does
:anyone think it's really going to make a massive difference? I
:understand my service man's theory but is it just clutching at straws
:for reasons ?

In the US, a new variable speed servo motor is available for about
$125 US. I'm sure they're available in Europe, but even shipping one
from china to the US to France will cost rather less than 500 euro.
Any one of modest mechanical competence can install one, it
mounts to the table in the same way as the existing motor. You'll
also probably need a new belt, of a different length. Suitable belts
are available from hardware and auto parts stores; they're used on
all sorts of equipment.

--
Truth is in your water heater.

David Scheidt

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Jan 8, 2014, 12:53:49 PM1/8/14
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BEI Design <nospam_b...@comcast.net.invalid> wrote:
Typical industrial sewing machine motor on older machines is an AC
induction motor. They run at a fixed speed, based on the construction
of the motor and the frequency of the current they're fed. Speed
control of the machine is managed by slipping a clutch. (Why they're
called 'clutch motors'.) It's possible to change the pulley on the
motor, fitting a smaller one will reduce the speed the machine is
driven.

Nicer machines have servo motors, which have actual speed control, and
don't run at all times, and with the right options can allow things
like needle positioning.




--
sig 51

Claire in France

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Jan 9, 2014, 3:36:45 AM1/9/14
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Le 08/01/2014 16:35, Ron Anderson a �crit :

>
> Claire that motor is to fast for that machine. Remember the 950 is basically
> a home sewing machine. The low speed motor is advised. The high speed will
> sooner than later destroy the machine completely.
>

Thank you confirming that Ron, I am going to call the business that
originally sold me this 2nd hand machine . They have a lot of machines
so I am hoping I can get them to exchange the motor for one that is
appropriate. Of course this will not easy with them in the UK and
myself in France.

I will let you all know how it goes.

Claire in France

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Jan 9, 2014, 3:41:43 AM1/9/14
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Le 08/01/2014 18:53, David Scheidt a �crit :

>
> Typical industrial sewing machine motor on older machines is an AC
> induction motor. They run at a fixed speed, based on the construction
> of the motor and the frequency of the current they're fed. Speed
> control of the machine is managed by slipping a clutch. (Why they're
> called 'clutch motors'.) It's possible to change the pulley on the
> motor, fitting a smaller one will reduce the speed the machine is
> driven.
>
> Nicer machines have servo motors, which have actual speed control, and
> don't run at all times, and with the right options can allow things
> like needle positioning.
>
>
>
>

I have a clutch motor.

My service man did mention possibly changing the pulley but it's not
something he does . There is a motor and electrical workshop business in
a nearby town , so if I can't get any joy with an exchange motor with
the original seller I will look into that option.

My service man did mention that there is not much difference between
what I have and an electronique moteur which will be silent until I
begin sewing, he also says that this will be easier to control stitch by
stitch.

i will see what today's round of phone calls brings

Claire in France

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Jan 9, 2014, 3:48:30 AM1/9/14
to
Le 08/01/2014 18:05, David Scheidt a écrit :

>
> In the US, a new variable speed servo motor is available for about
> $125 US. I'm sure they're available in Europe, but even shipping one
> from china to the US to France will cost rather less than 500 euro.
> Any one of modest mechanical competence can install one, it
> mounts to the table in the same way as the existing motor. You'll
> also probably need a new belt, of a different length. Suitable belts
> are available from hardware and auto parts stores; they're used on
> all sorts of equipment.
>

The price he has quoted is between 340 €uros and 400€uros before TVA /
value added tax which has just increased to 20% . As I am a small
business I can't reclaim the tax. I will then have fitting on top.

Some items in France are very expensive , I have found since living here
there is a lack of what I was used to know in the Uk of a recommended
retail price. Prices vary in a big way so I may get it cheaper by
shopping around however it takes an age to shop around . For example a
grease gun for my husbands tractor varied between 5 €uros and 35 Euros
in a 50 Km radius

If the UK firm won't play ball I may look at importing one. At least I
can comfort myself taht my 2850 RPM motor will have a good value if I
have to sell it on myself. I will just have to hope I can get an exchange.

Thank you for your comments.

Claire in France

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Jan 9, 2014, 4:33:23 AM1/9/14
to
I have just had a phone conversation with the owner of the firm that I
purchased the machine from. He confirmed that the motor would be too big
but talked me through checking the size of the pulley which according to
him should be 60mm about 2 inches. So that it should be working in the
right way for this machine.

I explained the birds nesting and he couldn't come up with anything
concrete. We talked about the start up procedure which I am already
doing. He mentioned a possible over run free spinning of the bobbin as
a potential reason for the bird nesting, but he's not sure on this model.

The service man is having a day off so I will call him tomorrow to ask
about that and to confirm the pulley size. We will see where we go from
here.

Claire in France

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Jan 9, 2014, 4:35:01 AM1/9/14
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Le 09/01/2014 10:33, Claire in France a �crit :
Forgot to add, My pulley appears to be the right size 6.3 cms

Kay Lancaster

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Jan 9, 2014, 5:42:03 AM1/9/14
to
On Wed, 08 Jan 2014 15:25:48 +0100, Claire in France <cla...@dontbotheritsinvalid.com> wrote:
>
> I love this machine when it works well but I am reluctant to spend yet
> again to change the motor, it will be the best part of 500 €uros. Does
> anyone think it's really going to make a massive difference? I
> understand my service man's theory but is it just clutching at straws
> for reasons ?

It certainly could make a big difference. Have you thought of replacing it
with a servo motor? Or just changing out the pulley on one you have,
assuming you've got the standard clutch-type?

Kay

Ursula Schrader

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Jan 9, 2014, 10:20:32 AM1/9/14
to
Claire, I don't know where in France you are, but did it ever occur to you
that you might be closer to Steckborn, Switzerland, than your UK dealer?
Perhaps it might be an option to turn to the headquarters of Bernina
directly? As for buying - although I hate to say it, in some cases the net
is better than real life. I got my Bernina Aurora 440 QE from a dealer in
Bavaria, some 500+ km off, who made me a special price, about 25 % less than
the recommended retail price. I found out since that this was due to the
fact that it is a discontinued model.

I have to admit that I'm a bit out of touch with the actual problem you had
but thought that my 2 c might be a valuable addition to the discussion. Beg
your pardon if I missed the mark entirely. ;-)

U.

Claire in France

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Jan 9, 2014, 10:41:39 AM1/9/14
to
Ursula,

I am a fair way down in France we are only 2 hours from the Spanish Border
https://maps.google.fr/maps?q=moulierous+montreal+du+gers&oe=utf-8&client=firefox-a&ie=UTF-8&ei=P8HOUsOYGeyr0gWY6YBo&ved=0CAoQ_AUoAg

I have found out that the motor seems to be all right as I have the
smaller pulley, I am waiting to talk to the service man in the UK
tomorrow in the hope that he can shed some light onto why I get this
birds nest / looping problem.
This seems to be what is causing the problem with the timing. The build
up underneath in the bobbin area happens often and is blocking the
bobbin and throwing the timing out, even when I stop as soon as I hear
it. Of course I can go for ages and have no problem at all, what I
really have to narrow down is what is causing the loping in the bobbin
area. I think the service man was suggesting the motor as it could be
starting too fast and throwing too much thread into the mix!!!

Ant thoughts and suggestions are always welcome. My guesses are entirely
uneducated (Grin)

Ron Anderson

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Jan 9, 2014, 10:59:10 AM1/9/14
to


"Claire in France" <cla...@dontbotheritsinvalid.com> wrote in message
news:laln30$4rh$1...@news.datemas.de...
Yes, if it was a sewing machine business that sold it to you, they should
have never sold it with that motor. The smaller pulley will decrease the
maximum speed but depending on the size of the pulley that is there may not
be enough.
A repair shop that will not change a motor pulley should be dumped as
quickly as possible. It is a very simple thing to do.

Ron Anderson

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Jan 9, 2014, 11:03:20 AM1/9/14
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"Claire in France" <cla...@dontbotheritsinvalid.com> wrote in message
news:lalqg5$a8c$2...@news.datemas.de...
> Le 09/01/2014 10:33, Claire in France a �crit :
The 6.3cm would put it at 2.5 inches just a hair smaller than the standard 3
inch pulley. 1.5 inch would be the best option for a pulley but a servo
motor would be better all around.

Ron Anderson

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Jan 9, 2014, 11:05:34 AM1/9/14
to


"Claire in France" <cla...@dontbotheritsinvalid.com> wrote in message
news:lamfvj$tg8$1...@news.datemas.de...
> Le 09/01/2014 16:20, Ursula Schrader a �crit :
That looping is a tension issue. Either no top tension or way too much lower
tension. It could be bobbin backlash due to the high speeds, this is not
uncommon. Could also be the thread finding its way out of the top tension
disks.

David Scheidt

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Jan 9, 2014, 4:46:17 PM1/9/14
to
Claire in France <cla...@dontbotheritsinvalid.com> wrote:
:Le 08/01/2014 18:05, David Scheidt a écrit :

:>
:> In the US, a new variable speed servo motor is available for about
:> $125 US. I'm sure they're available in Europe, but even shipping one
:> from china to the US to France will cost rather less than 500 euro.
:> Any one of modest mechanical competence can install one, it
:> mounts to the table in the same way as the existing motor. You'll
:> also probably need a new belt, of a different length. Suitable belts
:> are available from hardware and auto parts stores; they're used on
:> all sorts of equipment.
:>

:The price he has quoted is between 340 €uros and 400€uros before TVA /
:value added tax which has just increased to 20% . As I am a small
:business I can't reclaim the tax. I will then have fitting on top.

Ebay shows suitable motors availalble for 150 pounds, which is 175 or
so euro, and that would the right electrical requirments. (I looked
there for language reasons, nothing else. They'll be available for
that price in France or germany or italy, too.) Fitting is
easy for anyone with basic mechanical and
electrical competence: it's a matter of remvoing the motor,
installing the new one, and fixing the wiring. (Many servo motors
have a regular cord and plug, insead of being wired into the swtich
box on the table, though you can wire them into that, if you want.
They also tend to not use the god-awful 6 v lamps that clutch motors
have, but provide a mains voltage outlet to plug a normal lamp in.)

Anybody who can install a light switch or fix a washing machine can do
this, even if they have never seen a sewing machine before.

Your mechanic sounds either incompetent (can't change a pulley!?),
lazy, or he doesn't want you as a customer. Whichever it is, I'd go
look for someone else.



--
sig 94

Claire in France

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Jan 10, 2014, 4:01:33 AM1/10/14
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Le 09/01/2014 22:46, David Scheidt a écrit :

> Ebay shows suitable motors availalble for 150 pounds, which is 175 or
> so euro, and that would the right electrical requirments. (I looked
> there for language reasons, nothing else. They'll be available for
> that price in France or germany or italy, too.)

That sounds interesting can you point me in the right direction (link?)
please.

Fitting is
> easy for anyone with basic mechanical and
> electrical competence: it's a matter of remvoing the motor,
> installing the new one, and fixing the wiring. (Many servo motors
> have a regular cord and plug, insead of being wired into the swtich
> box on the table, though you can wire them into that, if you want.
> They also tend to not use the god-awful 6 v lamps that clutch motors
> have, but provide a mains voltage outlet to plug a normal lamp in.)
>
> Anybody who can install a light switch or fix a washing machine can do
> this, even if they have never seen a sewing machine before.

I can do both of those so no problem for that.

>
> Your mechanic sounds either incompetent (can't change a pulley!?),
> lazy, or he doesn't want you as a customer. Whichever it is, I'd go
> look for someone else.

I'm not sure where you got that impression from David. My service man
is great however he is a 2 hour round trip away, so fixing things does
end up taking longer as I don't always go to that town. He is also the
only person in this area that is willing to look at a Bernina, French
people seem to be surgicaly attached to their Singers , there is
nothing else for them.

The reason he hasn't changed the pulley or measured the pulley is that
he hasn't seen the table and motor part of the machine yet. The three
times I have had problems I have taken him the sewing machine itself. It
was only while discussing with him on Tuesday that he started to query
the motor as he realised that he hadn't seen it yet. So he sent me home
to check the size of the motor , he mentioned that it should have a
small pulley if it was the 2850 motor in order for it to be functioning
correctly.

Claire in France

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Jan 10, 2014, 4:04:38 AM1/10/14
to
Le 09/01/2014 17:05, Ron Anderson a �crit :

>
> That looping is a tension issue. Either no top tension or way too much lower
> tension. It could be bobbin backlash due to the high speeds, this is not
> uncommon. Could also be the thread finding its way out of the top tension
> disks.
>

That is my next area to eliminate , I will be watching the top tension
discs like a hawk. The tension block itself seems to be OK but I have to
check what's happening with it next time I get a birds nest.
Bobbin backlash is the suggestion of the UK firm that sold the machine,
that is to be looked at but I am watching the tension discs first.

Claire in France

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Jan 10, 2014, 4:06:09 AM1/10/14
to
Le 09/01/2014 17:03, Ron Anderson a �crit :

>
> The 6.3cm would put it at 2.5 inches just a hair smaller than the standard 3
> inch pulley. 1.5 inch would be the best option for a pulley but a servo
> motor would be better all around.
>

I am seriously considering it, I shall probably look at Ebay as per
David's suggestion, even if it's a UK one my father is in the UK at the
end of the month and might be able to pick it up then.

David Scheidt

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Jan 10, 2014, 1:16:31 PM1/10/14
to
Claire in France <cla...@dontbotheritsinvalid.com> wrote:
:Le 09/01/2014 22:46, David Scheidt a écrit :

:> Ebay shows suitable motors availalble for 150 pounds, which is 175 or
:> so euro, and that would the right electrical requirments. (I looked
:> there for language reasons, nothing else. They'll be available for
:> that price in France or germany or italy, too.)

:That sounds interesting can you point me in the right direction (link?)
:please.

http://www.ebay.co.uk/itm/NEW-SILENT-Brushless-Digital-SERVO-INDUSTRIAL-SEWING-MACHINE-MOTOR-0-3000-Rpm-/141155163283?pt=UK_CraftsCollect_SewingMachines_RL&hash=item20dd80dc93#shpCntId

No experience with that motor or that vendor, but that's the sort of
thing you want.


--
sig 58

Bobbie Sews more

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Jan 11, 2014, 10:40:08 AM1/11/14
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"Claire in France" wrote in message news:laod61$m1f$2...@news.datemas.de...
Claire, I sure hope you can get your problem straightened out.
Barbara in Florida


--- news://freenews.netfront.net/ - complaints: ne...@netfront.net ---

user

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Mar 28, 2021, 3:30:34 PM3/28/21
to
You are wrong on that it is only a sticker, original 950 was made in switzerland. and it says so on the machine. the newer ones were made with licence in thailand, they are marked as bernina and tacsew. those are shit and not a bernina at all. with an original swiss model you will never go to a mechanic. EVER!

--
For full context, visit https://www.inspirepoint.com/sewing/further-saga-of-the-bernina-950-72809-.htm

ItsJoanNotJoann

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Mar 29, 2021, 12:13:23 PM3/29/21
to
Somebody never looks at dates when replying to s.e.v.e.n. y.e.a.r. o.l.d. posts
Last reply made to this thread was January 11, 2014 before you dug it up and
replied. Somehow, I don't think any of the previous posters are interested in
your revelation.

hub...@ccanoemail.ca

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Mar 29, 2021, 1:20:12 PM3/29/21
to
On Mon, 29 Mar 2021 09:13:21 -0700 (PDT), ItsJoanNotJoann
<itsjoan...@webtv.net> wrote:

>On Sunday, March 28, 2021 at 2:30:34 PM UTC-5, user wrote:
>>
>> You are wrong on that it is only a sticker, original 950 was made in switzerland.
>> and it says so on the machine. the newer ones were made with licence in thailand,
>> they are marked as bernina and tacsew. those are shit and not a bernina at all.
>> with an original swiss model you will never go to a mechanic. EVER!
>>
>> --
>>
>Somebody never looks at dates when replying to s.e.v.e.n. y.e.a.r. o.l.d. posts
>Last reply made to this thread was January 11, 2014 before you dug it up and
>replied. Somehow, I don't think any of the previous posters are interested in
>your revelation.
>


Adding useful information to an old thread isn't a bad thing -
... there are times when a person is searching for information and
discovers an old thread with newer information and it's also helpful !
Imagine that.
I do wonder though - what is served by adding only ridicule ..
.. about the date of the posts ?
John T.

ItsJoanNotJoann

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Mar 29, 2021, 2:22:59 PM3/29/21
to
On Monday, March 29, 2021 at 12:20:12 PM UTC-5, hub...@ccanoemail.ca wrote:
>
> Adding useful information to an old thread isn't a bad thing -
> ... there are times when a person is searching for information and
> discovers an old thread with newer information and it's also helpful !
> Imagine that.
>
> I do wonder though - what is served by adding only ridicule ..
> .. about the date of the posts ?
> John T.
>
Really? Adding information to a dead, 7-year-old thread is useful?
How is it useful when no one in the last 7 years inquired about this
machine?

My 'ridicule' hopefully will open the eyes of clueless posters to check dates
of threads they are replying to and not think the world is tapping their fingers
awaiting an answer to this old subject.

hub...@ccanoemail.ca

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Mar 29, 2021, 4:17:50 PM3/29/21
to
Hi Joan not Joann :

I suspect that you have some very valuable knowledge
and experience with sewing and sewing machines -
- please feel free to share ! .. regardless of the thread's
date-line ..

New info could certainly be very useful to new/future searchers.
Especially when the subject line is specific to make/model/topic -
.. eg. in my area these old Bernina seem to be a very favoured
< and pricy ! > item - so people want to get as much info as they
can when they acquire one from Aunt Ethel - and they scour the web
and forums for any & all threads - many are using google groups
and home-moaners-hub or whatever and don't know or care about
the date of the original post or the replies.
... you are not teaching them anything ...

In the past - I have found a few excellent Yahoo Groups -
< I haven't visited there in quite a few years >
which keep archived threads for this very reason -
- some long-dead olde-tyme regulars have posted
* * * pearls of wisdom * * *
that a new/young enthusiast will treasure !
some of these groups even have folders full of photos
& service manuals & other great info.
Sample groups that I have found very useful -
: Vintage Elna sewing machines
: Vintage Necchi sewing machines
: Vintage WheelHorse garden tractors
: Small Engines

If everyone keeps a kind and positive attitude - it might help
in encouraging and supporting the newby posters -
rather than presenting a negative or discouraging face.
Happy April all ! ... all-too-soon .. :-)
John T.

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