Is it possible that tying thread gets weak after time? I have some 8/0 that I havn’t used in 2-3 years. I don’t know if it is my imagination but it seems that it breaks with the slightest amount of tension on it. It is “Uni-thread” by the way.
I bought taperd mouth bobbins
end of problem
check for sharp edges
If the wax gets heavily coated with dust, I think it could weaken the thread. Pull off an entire layer to see if it gets better.
Jude
Late to bed,
Early to Rise,
Guide all day,
Tie more flies!
www.customflys.com
Sounds like defective bobin.
Buy a new one.
MW
Hi big brown,
I use Uni-Thread a lot and encounter this now and then even with a ceramic tube bobbin. I just pull a foot or so out and try it again. I’ve had some spools for at least 4 or 5 years since I just tie for myself. I’ve never seen an entire spool of that brand that just kept breaking, just a spot here and there.
Regards,
Mark
You could have a nick in your bobbin.
You could be not unwinding the twists in the thread from wrapping the thread around the hook. Each wraps, adds one complete twist in the thread. Twisting causes the thread to lose some of it elastic characteristics. Nylon material is more elastic than Polyester. Different construction methods of making thread effect the elasticity of the thread, as do the Glazing (coating of the finished thread).
Maybe you are using too much tension on the thread when you are tying, or using a thread that is not strong enough for the task, you are trying to complete.
If it is not the bobbin, then it maybe the choice of thread, or it’s breaking strength. You may wish to read the Thesis I wrote on “Thread”.
[url=http://www.flyanglersonline.com/flytying/tyingtips/part211.html:5a888]Click Here, for “Thread” in the Tying Tips Section.[/url:5a888]
~Parnelli
[This message has been edited by Steven H. McGarthwaite (edited 28 March 2006).]
Please don’t get me wrong. I am by no means knocking Uni-thread. It’s all I have used for a long time and never had a problem until now. I will buy a different bobbin and see if that helps although the one I use now is ceramic. Hopefully that will help.
Thanks
If you spool was exposed to the sun for a period of time, the thread could be ruined. I have experienced this with kevlar thread.
Are you nicking the hook point???
I’m probably one of the least experience tyers on her but I can tell you, there can be a big difference in thread from spool to spool. I recently purchased three spools of metallic thread in gold, silver and copper. The silver and gold ‘behaved’ just as expected. When I loosed the copper from the ‘keeper’ about four feet of it flew off like line from a spinning reel that was spooled on backwards. As long as I ‘straighten’ it and wind it back on it’s fine. When I get to the end we get to do it all over again. I assume it got twisted as it went on the spool.
Why’s this stuff always happen to me? 
See JC’s post above…I doubt it would happen with uni…of course nobody’s perfect…
I agree with JC and others, Uni makes great thread. The only time I break it is when I am careless (too much tension while tying in deer/elk hair and not using the right thread LOL, or when I nick the point of the hook). I did have trouble with breaking thread when using a different bobbin that I normally use (Tiemco ceramics are my choice).
Take care everyone and cya around. Mark
Get some GSP and it wont break, get the 50 denier and its flat and test out some other threads like Danville and Gudebrod. I am going to play the devils advocate, I dont care that much for Unithread. I had the same trouble out of a couple of spools of 8/0 a few years back and switched to Danville and now Gudebrod. I just like the flat lay of the thread that those two have and Uni doesnt seem to have that down as well as Danville or Gudebrod.
The last spools of black Uni thread I bought I had to just throw away. I kept breaking the thread tying on one spool and finally took it out of the bobbin to see what was going on. It had frayed places about every foot or so.
I threw that one away and got another. The same thing with it, before it was over I had thrown away all 4 spools I had bought at the same time. I have some other color’s that I haven’t had a problem with that I got at another time.
I guess they had a bad run or something but I have since quit using it for I have to order my tying material and cant replace it quickly. I know things can happen with any product and I’m not nessasarily downing Uni but I cant take a chance on that happening any more.
I’d say more than likely that is your problem as well if your bobbin is good. Pull it out of the bobbin and unwind the thread to see if there is bad spots it it. It was obvious in my spools, I could see and feel it. I feel you will see any bad places very easily if that is the case.
Good luck, Jesse
Jesse
In old age, walking on a trail of beauty, living again may I walk
My bet is the bobbin. 90 percent of my breakage happens when stuff builds up on the inside. I don’t know if there is a good way to clean out all the debris. Catching it on the exposed point of the hook is the other culprit. My thoughts. JGW