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BL4-434D I don't know how to adjust overlock length.

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1 Answer

Not overlocking


try changing the needle
and adjusting the tension
if these suggestions don't help then the machine could have jumped time & needs to be serviced

May 11, 2012 | Sewing Machines

1 Answer

What are the settings for overlocking stretch fabrics


For knits with lycra in, you are best to thread up four threads and seam with the 4 thread marrowing stitch like this, preferabbly with ball point needles in your overlocker, size 80. Use cones of polyester thread, 3,000 metres or 5,000 metres rather than normal thread. (Although if you have trouble matching thread colours you can use a small reel on the left needle as this is the thread that will show on the right side of the garment.)

11_7_2011_5_17_44_am.jpg


Start with your machine tensions on 5, both needles in and threaded, stitch length of 2.5 and no differential (set it on zero) and test stitch. Using stretch or ballpoint needles is a good idea too to avoid any deflection and skipped stitches. Then practice serging on some fabric scraps, double layer and look at the seam, if it is tunnelling (pulling up the fabric), then move the cutting blade to the left. Test again and if still tunnelling, then loosen off the tension on the top and bottom loopers by a half number and test again.

If the opposite is happening and the threads are looping off the edge of the fabric, then move the cutting blade to the right to trim less fabric, test again. If still too loose, then tighten up the top and bottom looper tensions by a small amount and test again.

You want the seam to lie flat, the two looper threads to meet right on the cut edge and the needle thread to be just visible from the right side when you press open the seam.

There is always a small amount of adjustments needed on an overlocker when setting up for a new project as every fabric will behave differently. Don't tighten up the tension on the needles much past 5 though, or you may get thread breakage.

If you find that the seam is flutting then you can use the differential feed to adjust for this too.

There is some good overlocking info on Debbie Cosgroves website, www.sewing.about.com, with images which may help too.

Nov 07, 2011 | Janome MyLock 634D Mechanical Sewing...

1 Answer

How do I create a rolled hem with this machine. I see the stitch width knob, but do I need to remove one of the threads for this?


Making a rolled hem on any overlocker is achieved in the following way:

use right hand needle only and top and bottom loopers. Turn stitch length down so threads are closed up (on mine this is 0.5). Your stitch length dial will be one on the right hand side near the flywheel usually. Loosen off the the top looper tension and tighten up the bottom looper tension (these are the right and 2nd right tension dials on front of the machine). On my Bernette I leave the needle at the usual 5, 2 on the top looper and 6.5 to 7 on the bottom looper thread. Move cutting blade position to the right so that you are trimming the fabric quite a bit wider than your stitch, this makes the fabric "roll" underneath inside the stitching to form the rolled edge or hem.

There is also another step that needs to happen where you change or remove a little stitch finger that sits in the pressure foot or just under it. On the Bernettes, you flick a lever to move this stitch finger back towards the operator so it is out of the stitch forming area. On some machines, it is a case of changing the little stitch finger which is screwed onto the pressure foot with a screwdriver.

I really don't know with your Necchi which it is but have a good look at the pressure foot, and around the blade cutting area and see if you can see a lever or check out the accessory bag and see if there is another stitch finger in there, it would be smaller than the one on the foot now. In effect, this finger sits out and the threads wrap around it to form your normal overlock but for rolled hem you want a much smaller finger in place to make a very little seam.

The other variable which makes a very neat job is to use a thread called "wooly Overlock" in the upper looper only. This thread when pulled under tension is tight looking but when you let it go, it fluffs out. So when seaming on a rolled hem it fills out the stitching and covers the edge of the fabric fully giving a smooth look. You can do it without but wooly thread makes a great job and you'll see it on all Ready to Wear seams usually for this reason.

If I am going to roll hem a fine sheer woven fabric like organza or chiffon I will change the needle to make sure it is nice and sharp and also ensure it is a regular point, not a ball point (I seam lots of knits so have ball points in most of the time on mine) Usually a size 80 is fine.

I hope this gets you going with your overlocker, I usually test stitch quite a bit with the stitch length at the normal 2.5 setting and adjust the looper tensions until I've got the stitch looking good, then turn it down to the very close 0.5, just to not waste a ton of thread.

Sep 09, 2011 | Necchi 6002 Sewing Machine

1 Answer

I find my janome overlock machine is very slow ,i would like to know how to increase its speed


There is no speed seperate control on overlockers other than the foot control but most sew at 1500 stitches per minute, very fast compared to sewing machines.

What is your stitch length set to as this could be the problem. For normal four thread stretch seam you would want the length set to beween 2 and 3 so double check this - the length knob is usually a knob on the right side near the flywheel.

Hopefully, the above solves the problem for you but if not, please message again.

Aug 28, 2011 | Janome 1600P-DB Mechanical Sewing Machine

1 Answer

How do I adjust the stitch length on a Janome "My Lock" 234?


Is there a dial on the right above the flywheel? This is where you adjust the stitch length on most sergers. It might be numbered from 0 to 5 or 4.

tally_girl_23.jpg
If it has differential feed, there would be a dial there for this too, possibly under the stitch length knob - it would have numbers like -1, -0.5, 0, 0.5 and 1 on it.

If you are new to sergers/overlockers I highly recommend a class, demonstration or investing in a good book to get you started as they are not like sewing machines and many of the techniques are best demonstrated such as rolled thread edging and flat lock seams.

I've borrowed he Singer book "Sewing with an overlocker", or "Serge with Confidence" by Nancy Zieman from my library but there would be other titles too.

Apr 13, 2011 | Janome 2049LX Mechanical Sewing Machine

1 Answer

Toyota overlocker I have made the stitches smaller how do I make it retuen to normal


Do you have a manual?
http://www.aisin.fr/catalog/download//manuel%20SL1,%20SL1T,%20SL1T-X,%20SL1A.pdf
Page 88 of the PDF file (page 67 of the manual) explains how to adjust stitch length.
Hope this helps!

Oct 25, 2010 | Sewing Machines

1 Answer

I just bought a Yamata BL4-434D overlock machine,


Put 4 colours of thred on the machine , set all tention knobs to 0 stitch and see what colour is not tight, adjust the colour that is not tight. Also use jersey ball point no 80/12 needles it work on all material E-Mail me wcbotha@yahoo.com From Willem SA

May 10, 2010 | Yamata BL4-434D

2 Answers

I want to know which knob I use to make the stitching narrower


there are generally two variable controls .. one adjusts the stitch length (distance between stitches measured in stitches per inch) ... the second is stitch width .. that adjusts how far the zigzag moves left and right .. thats usually just a number from 0 to 10 or so .. 10 would be maximum width .. 0 would be used for straight stitch ..
so you need to adjust the stitch width control to make the stitching narrower .. the controls are called different things on different brand sewing machines .. if you have the brand and model number then there may be instruction booklets available ...

Jan 04, 2010 | Sewing Machines

2 Answers

I was given a Huskylock 430 serger and need to know if someone can tell me the correct tensions.


There are really not any #s you can set to give a good stitch. You have to just use the #s as a guide. Most sergers from the factory will give you something decent around 4 across the board. Start there and make slight adjustments as needed. It also depends on the stitch and type of material used.

Aug 17, 2009 | Sewing Machines

2 Answers

Yamata FY14U4AD


The easiest way to get your threads adjusted and learn which thread does what is to thread the machine with 4 different colors. Set your tension dials at 4,3,2,1 from left to right. This is the starting point. Sew on a test strip and look at the threads. You can then adjust the correct tension dial according to the thread color. This is a great way to get the machine set back to correct tensions as well as a learning tool to figure out what each thread looks like so you can adjust later when using all one color.

Feb 25, 2009 | Yamata FY14U4AD

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