Serger Sewing: Three Thread Sewing

Video Transcript

"On behalf of expertvillage.com my name is Neal Jones with A Perfect Fit Alterations and we are at 102 Main Street, Burleson, Texas and our phone number is 817-447-3522. Continuing with our threading we have to set the machine up after we’ve threaded it and we need to decide exactly the kind of sewing in the kind of operation that we’re going to do with the machine. The machine will do several different things but the machine is much more complicated than a regular sewing machine so in order to guide us to be able to do these particular things we have some cards here, now this particular machine has cards that show us what we need to do. Now if this were another a more expensive model or a different manufacturer it may have a computer screen up here that might have this information on it but in this particular case we’ve got this information on cards, now this card is actually the card for if you look at the top it shows a picture of the thread that we’re trying to do. Now we would look at the picture and say that is what we want and we would have give us the title up here and it says 3 thread, now in order to have the machine do 3 thread serging we then will follow the rules here. We have the stitch length would be at 2.5 this would be our stitch length the SL and we would turn that here to 2.5 which is where its probably set right now, the differential feed which I’ll explain in just a moment DF would be set on one which is where it is set right here. Then we come down here and we would actually remove one of the needles, now we have left and right and then corresponding on our needle head we have left and right marked on here, so we would take our left needle, would loosen this screw and we would remove the needle that we didn’t need, so we would have just the right hand needle, now we would then remove the blue thread which the adjuster is right here and here’s the thread so we would completely remove that thread and then we would then have the red, the yellow and the green. Now continuing across we would adjust the adjustment for our cutting knife which the adjustment would be right here and it has numbers this one’s 3.7 and then there are numbers corresponding with a little dot right here that would give us the adjustment for our cutting head. This next little window shows us that we need the upper looper which if you can see the picture here it looks just like this part right here you can recognize it from the picture, we need the upper looper with its thread in it and also there is a thread device here that will give us a thread width, that device there which it looks like this is to be in place which is what it’s telling us right here. Now that would be what we would call a three thread setup, now before we move on to the fourth thread setup let me just explain that we have the differential feed, the differential feed is a device that covers our feed dogs, now our feed dogs are setup so that we have front and rear feed dogs and we would then use this device to control the speed of the front and the rear feed dogs. If the fabric that we’re sewing with requires the different speed would be to stop the fabric puckering or to make the fabric pucker if we were after a certain look or making a certain garment, so the feed dogs are divided into front and rear and this control here which is our differential feed will make the dogs operate and the feed operate at different speeds which will give us that different affect."