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Embroidery => General Embroidery => Topic started by: whitewater on December 16, 2019, 02:12:36 PM
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So we have a 6 head tajima, and a double head and single head tajima also. The 6 head being the oldest model.
So jackets, fleeces and what have you stitch out well on the 6 head, but then when i put knit hats on its constantly eating them - birdsnesting.. and it just randomly picks a head and will just keep doing it.
I was told to double back them, so i did, and keeps doing it... now i triple back them, and still happens.
Everything else sews out fine, but its the effin knit hats.. they are fine on the single and double head though. So im not sure what i am doing wrong??
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Start with bobbin tensions. See if their is a noticeable difference between the machines, loose bobbin thread or loose top thread can easily get wrapped up in the basket when doing loose fabrics. Check for flagging, make sure your pressure foot is coming up and all the way out of the fabric before the pantograph. advances to the next stitch, if it is flagging the you will get nesting. Usually when things are not cooperating and all the basics are checked we start slowing things down till something changes, if it still happens change needles, change thread etc.
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triple check your thread path.
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triple check your thread path.
we have done that... its a different head each time.
ill check tensions
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What needle point are you using? On knit I would run a ball point.
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What needle point are you using? On knit I would run a ball point.
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Besides slowing down as Inkman suggested, I always lay down a fill the same color as the knit hat to sew the design on top of. Looks a lot cleaner that way also.
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Besides slowing down as Inkman suggested, I always lay down a fill the same color as the knit hat to sew the design on top of. Looks a lot cleaner that way also.
so that makes the stitch count much higher... so do you charge for that?
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Not usually unless it is a large design. I increase the stitch length and lower the density because I don't usually need a real flat surface unless there is small lettering, so it doesn't add a whole bunch of stitches.
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Is this the size of needles you are using? Why so small?
I use 75/11 with no problems, and I do lots of knit toques and beanies.
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Is this the size of needles you are using? Why so small?
I use 75/11 with no problems, and I do lots of knit toques and beanies.
its what madeira recommended and also what the person used that we bought our double head from.
Maybe go to an 11?
UPDATE: slowing the rpm down to 400 has helped.. 2 rounds and no birdnesting -
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It is something you could try, but if slowing down the machine is working, go with that. ;)
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Wow just noticed what he is using. We do not use anything smaller than standard 75/11, we go up to as high as 90/14's My operator pefers larger needle for knit beanies and such. Out of curiosity what weight thread are you using with a needle that small?
Is the machine giving you angst the only one running those needle sizes?
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Wow just noticed what he is using. We do not use anything smaller than standard 75/11, we go up to as high as 90/14's My operator pefers larger needle for knit beanies and such. Out of curiosity what weight thread are you using with a needle that small?
Is the machine giving you angst the only one running those needle sizes?
#40 wt. from madeira
so i should be using larger needles on everything? Ive had a tech here setting up the machines and never said a word on needles.
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Order all new needles and change them all out? is that why we have a crap ton of thread breaks? LOL
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Come to think of it, I also use 75/11 ball point large eye.
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It is a very fine needle and from what I can find 60 weight thread is recommended for it. It is definitely not a good size to use for what you are having an issue with.
I wouldn't invest to much in changing them out right away but I would order 75/11's and start using them as you break and wear out needles.
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Hey everyone - thanks for the info!
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75-11 minimum or larger. Make sure you have the thread through in the needle turned about 5 to 7 degrees to your right as you look at the needle.
Lastly I did not see anyone mentioning hook timing. This is a critical mechanical element that if not properly set will raise hell with you when there are other contributing factors in the sewing process, tension, hooping, needle size (BTW needles of the same size can often have different eye sizes , I have forgot the nomenclature associated but could easily be a factor), machine speed DIGITIZING QUALITY and the design .
Given your success on other machines I would look into the mechanical elements of your multi head.
Lastly what happens when you take a hat design / hat style that sews well on your single and double and run it on you larger machine?
I would start with the needle offset and the hook timing.
One last thought..........take a piece on tape put it on each of your needle plates. Pierce the tape with one stroke of needle #1 then switch to needle #8 then lastly needle #15. If all 3 do not hit the same exact needle hole then you have an alignment issue with the sewing head in general.
mooseman
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If I turn my needles like that they stitch like crap. I use ackermann poly and 75/11 for 90% of work . swf and ricoma 2 head. if you use rayon then maybe turn them.
I would check timing. I have redone our old 4 head and singles no problem. so tajima should be similar.
shane
Sent from my SM-G975U using Tapatalk
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We used to retard the needle angle until we had our newest machine installed by barudan. He expressly told us it was the wrong thing to be doing and how he explained it I forget but it did make total sense. Simply put having your gap set correctly is what you should always be doing nothing else, if you are having issues from hats to flats then adjust need gap accordingly till both sew well.
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That is basically what timing is plus a little more. but yes that is it.
Shane
Sent from my SM-G975U using Tapatalk
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Order all new needles and change them all out? is that why we have a crap ton of thread breaks? LOL
Don't laugh.
I'll bet that is exactly why you have a lot of thread breaks. Especially since you are using 40 weight thread.
The diameter of the thread is pretty big when trying to go thru a hole that size. That is what 60 weight is for.
The smallest needle I keep on hand is the 70/10. for doing super light weight fabrics. Don't use them much.
So jackets, fleeces and what have you stitch out well on the 6 head, but then when i put knit hats on its constantly eating them - birdsnesting.. and it just randomly picks a head and will just keep doing it.
Since it's random one which head is doing that, I would put my money on the needles.
Though I have had needles with no scarf. That one took a bit to figure out..... :o
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And please tell us you are using a water soluble topping for the beanies???? That's a must and I haven't seen anyone suggesting that although I just quickly glazed over all these posts. And a 75/11 is fine on beanies unless you have some fine detail which we wouldn't do unless you laid down a solid foundation like the previous poster suggested.
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And please tell us you are using a water soluble topping for the beanies???? That's a must and I haven't seen anyone suggesting that although I just quickly glazed over all these posts. And a 75/11 is fine on beanies unless you have some fine detail which we wouldn't do unless you laid down a solid foundation like the previous poster suggested.
i was not using a topping.. there is alot of fill , not much detail. But ill remember that
And im getting some needles.
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solvy help lubes the needle also.
Shane
Sent from my SM-G975U using Tapatalk
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And please tell us you are using a water soluble topping for the beanies???? That's a must and I haven't seen anyone suggesting that although I just quickly glazed over all these posts. And a 75/11 is fine on beanies unless you have some fine detail which we wouldn't do unless you laid down a solid foundation like the previous poster suggested.
i was not using a topping.. there is alot of fill , not much detail. But ill remember that
And im getting some needles.
Just wanted to follow up, did you get a chance to change the needles?
If so, how have things been running? Less problems?
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there has been another issue with the machine now.. so im working on that. One thing after another.
But i will update this when we get it running.