"Don W" wrote in message
.. .
Doug,

What model Pfaff and Juki are you using? We were just talking yesterday
about
buying an industrial machine, but don't want to spend the money and still
not be able to sew the Tenara.

The Pfaff is so old the numbers have worn off. Looking at a brass plate on
the
front of the machine the number 545 begins a long string of numbers. This
might
be the model number. The Juki is an LU-563N.

Our Pfaff is a 1222E with a walking foot and has handled everything we
threw
at it until we threw the Tenara thread into the mix. With the bobbin
tension
set to minimum and the needle tension set to maximum it just starts to
make
a reasonable stich, but you can tell that the upper tension is still not
quite high enough. I suppose it's because the PTFE thread is fairly
slick.

It is slick, that's for sure.

Also, do they make industrial machines that don't use a bobbin, and can
take
the lower thread right off of a spool? It seems like that would be an
advantage
compared to winding bobbins all of the time.

I don;t know, but I doubt it. If you look at how the bobbin works is seems
unlikely.
We have a serger that has 4 thread spools and no bobbin. It also has 2
needles.
I can't pretent to understand how it works.

We're in the learning and shopping mode now, and would appreciate your
advice.

The only way I can think of to tension the top thread more than the machine
provides
for is to wrap it around something before it gets into the machine. The
stands that
holds the thread spools has a loop above it that you can run the thread
through a
couple of times. You might try the hold the thread between your fingers to
see if
additional tension helps.

Don W.

Doug Dotson wrote:

"Don W" wrote in message
t...


Steve wrote:


I have saved enough Sunbrella to make a regulation sail cover. However,
because I have Dutchman sail flaking system (which I'm not totally happy
with. Subject or an earlier Post!), I want to make a 'trial cover and
give it a couple seasons to see how everything works out.

Not a bad idea.


I have my own sail/canvas machine and can knock out a cover in a day if
don't have to worry about mistakes or wasting expensive Sunbrella.

Have you ever used Tenara (PTFE) thread? We're starting to make a full
boat cover for our C27, but having a devil of a time getting the Tenara
to run on her Pfaff. The problem seems to be that we can't set the upper
tension high enough. It is supposed to be great stuff though, and
guaranteed
for lifetime against UV degradation.


It is great stuff. We have started to have many customers willing to pay
a bit
more for Terara (Gortex) thread. It used to be a pain to work with but in
the
past couple of years they seem to have changed the product a bit so no
real problem. I wish they would start making hembobs with it. Our primary
machine is a Pfaff and it runs fine with no change of adjustment
necessary when
changing from regular polyester to Tenara. Another of our machines is a
Juki
and no problems there either. You might make a call to you local sewing
machine mechanic and ask about the problem you are having.


Does anyone have any experience with covers made out of the (relatively)
superior silver tarp material??

Nope.


Thanks,

Steve
s/v Good Intentions