A couple of needle/thread Q's...
Machine = Adler 167-373T
A couple of weeks of practice using $5/square mile, waterproof, #8 heavy cotton duck canvas and I'm starting to get comfortable with the machine and am getting decent results. Now I have a few more questions before I move up to more expensive fabric:
1) I tried some #138 Non-wicking polyester thread through a size 22 needle and wasn't pleased with the results. The thread wasn't wrapped very tightly and tended to fray pretty quickly and was messy to cut. Is this normal for all non-wicking thread or is there another issue here? Does "non-wicking" = "not bonded"?
2) The Adler manual for this machine says that "The bobbin thread should be thinner or softer than the needle thread." Why is this? I've been using the same size #92 bonded polyester thread as the needle thread with decent results (at least I think it was decent).
3) Finally, I think I saw somewhere that the largest needle that can be used with this machine is a size 22 BUT, I see that there are 2 types of feed dogs for this particular machine--one for needle size up to 22 and one for larger than size 22 needles. I'd like to sew some #207 thread and maybe some 277 at some point. Is it safe to presume that the needle (and therefore the feed dog) size are the only limiting factor in the use of these large threads?
1) No, it doesn't mean not bonded. Bonded thread has a coating on it to let it run through the sewing machine better, it doesn't make the thread stronger.
Here is the definition of non wicking thread from the Thread Exchange:
"This thread has a finish that resists liquids flowing through seams. There is a trade-off--some non-wicking finishes weaken abrasion resistance. You can minimize this problem by only using this thread when you sew high tension seams."
2) No, that is absolutely wrong, you should always use the same size top and bobbin thread. While the machine will sew just fine with different size threads, if one is larger than the other, the larger thread can actually cut the thinner thread.
3) No. I would put the feed dog with the larger hole on and leave it on. Your machine should be able to use up to size 24 needles, and the largest thread that will comfortably go through the machine is probably 207, and that won't work that well. I don't think 277 will work at all, but I don't know for sure. You can try if you like.
I don't like the non-wicking thread--I'll just use some sort of seam sealer when the time comes and...
When I eventually get around to trying 207 thread and especially 277 thread, don't start off by ordering 16oz spools. ;)
"When I eventually get around to trying 207 thread and especially 277 thread, don't start off by ordering 16oz spools. ;)"
You are a smart man! My suggestion would be to just put either size about 20 winds on a bobbin and see what happens. The top thread shouldn't be a problem, I'd be worried about the bobbin thread.
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