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Help Me Learn To Use My Juki Ddl-5550


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#1 Stocksuspension

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Posted 04 July 2010 - 02:00 PM

How's it going guys. First of I wanna say I'm new to sewing/ leather work and interested in leather upholstery. I just purchased a juki ddl-5550. I already figured how to thread the machine. Problem im having is "threading" the bobbin. How do I getthe thread to come up from the bottom? Also I went to Joan fabric store and purchased so leather needles. Currently there is a size 90 needle In my machine. They sold me 90/14 leather needles. They don't fit? Also is there a way I can slow the machine down?

#2 dirtclod

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Posted 04 July 2010 - 02:41 PM

If you have thread on the bobbin put it in. Then thread your needle and turn the wheel by hand and your bobbin thread should come up and your ready to sew.

You can get servo motor to show the machine down. I've never used one personally. There are several sewing machine dealers on here that can get you a servo motor. Plus they can probley help you the right size neddle.
I'm old enough to know that i don't know everything.

#3 Wizcrafts

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Posted 04 July 2010 - 03:47 PM

How's it going guys. First of I wanna say I'm new to sewing/ leather work and interested in leather upholstery. I just purchased a juki ddl-5550. I already figured how to thread the machine. Problem im having is "threading" the bobbin. How do I getthe thread to come up from the bottom? Also I went to Joan fabric store and purchased so leather needles. Currently there is a size 90 needle In my machine. They sold me 90/14 leather needles. They don't fit? Also is there a way I can slow the machine down?

The Juki is an industrial machine, which uses series DBx1 industrial needles, not home style needles. The machine is a very high speed straight stitch machine, designed for sewing denim garments.


Posted IMHO, by Wiz

#4 Stocksuspension

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Posted 04 July 2010 - 08:32 PM

If you have thread on the bobbin put it in. Then thread your needle and turn the wheel by hand and your bobbin thread should come up and your ready to sew.

You can get servo motor to show the machine down. I've never used one personally. There are several sewing machine dealers on here that can get you a servo motor. Plus they can probley help you the right size neddle.

am I supposed to leave some thread hanging out of the bobbin cartrige?

#5 dirtclod

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Posted 04 July 2010 - 08:50 PM

Yes, leave 2 to 3 inches of thread hanging out of the bobbin.

Edited by dirtclod, 04 July 2010 - 08:50 PM.

I'm old enough to know that i don't know everything.

#6 Wizcrafts

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Posted 04 July 2010 - 10:21 PM

Here is a YouTube video showing how to thread an industrial machine similar to yours. Note, that if you intend to sew upholstery material, whether leather, leatherette, cloth, or vinyl, you will probably need at least #69 bonded nylon thread, in a # 18 needle. For a better appearance, try #138 nylon thread with a #22 needle.

Get a speed reducer, or a servo motor with a smaller pulley, so you don't burn up the thread when sewing leather and vinyl. And, keep the machine oiled!
Posted IMHO, by Wiz

#7 Techsew Ron

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Posted 05 July 2010 - 10:25 AM

Here's another video of ours showing the thread coming up from the bottom:

You can see this step at about 1:36 into the video.

Good luck,
Ron
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#8 Wizcrafts

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Posted 05 July 2010 - 11:50 AM

Since you intend to use this machine to sew upholstery projects you will probably need to purchase a special roller foot equipped with steel rollers. Or buy a flip down roller foot conversion set. Most dealers have these items, or you can find them on eBay. The standard foot may not feed properly, depending on the softness or stickiness of the top grain of the material (leather and vinyl) and length of the project being sewn.

Normally, vinyl and garment/upholstery leather are sewn on a compound feed walking foot machine, also known as triple feed. Your machine is single, bottom feed and is designed to sew cloth and denim.

Here is your to do checklist:
  • get proper system DBx1 (a.k.a. 1738) industrial needles, in sizes 16, 18, 20 and 22 (regular and leather point), in packs of ten
  • if you now have a clutch motor, get a speed reducer, or a 2" motor pulley (will need a longer belt), or a replacement 1/2 hp servo motor with a speed limiter knob (Toledo Industrial Sewing Machines and other dealers)
  • get a roller foot pressor foot, or roller foot conversion kit (see Atlas-Levy video)
  • get #69 and #138 bonded nylon thread, in the colors you want to use, two spools each (1 for top 1 for bobbin). I recommend getting 1 pound spools for most used colors.
  • get more bobbins and bobbin cases (with anti-backlash springs)
  • get a quart or gallon of industrial sewing machine oil
  • watch all of the industrial sewing videos you can find on YouTube
  • get the proper long and short screw drivers for the pressor foot, needle clamping screw, cover plate and feed dog screws.

Edited by Wizcrafts, 05 July 2010 - 11:58 AM.

Posted IMHO, by Wiz

#9 Stocksuspension

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Posted 06 July 2010 - 12:10 AM

Thanks for all the tips and pointers guys. This week I'm going to try to go to industrial sewing store and pick up an assortment of needles and thread

#10 Gregg From Keystone Sewing

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Posted 06 July 2010 - 10:10 AM

I'm not so sure Juki DDL-5550N can handle 138 (or a 92 for that matter) no matter the needle size. I've been wrong in the past, but I'm pretty sure about this one.

69 of course does work well, of course.
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#11 Art

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Posted 06 July 2010 - 11:44 AM

This isn't doing you a lot of good now, but the 5550 is really a fabric machine. It is fine for doing boot tops and stuff like that using 46 or at the most 69 thread. The machine you need is something in the Singer 111 class, like the 618 that Highlead makes (Cobra class 18 is made by Highlead) or a Nakajima 280L. Machines of the 111 class take all sorts of feet like cording, piping, zipper, etc. pretty much everything needed for the trimming trade. If you can work a trade with someone, and even have to add a few bucks, you will be a happier camper. Try Cobra or Nick-o-Sew.

Art
For heaven's sakes pilgrim, make yourself a strop!

#12 Gregg From Keystone Sewing

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Posted 06 July 2010 - 02:47 PM

This isn't doing you a lot of good now, but the 5550 is really a fabric machine. It is fine for doing boot tops and stuff like that using 46 or at the most 69 thread. The machine you need is something in the Singer 111 class, like the 618 that Highlead makes (Cobra class 18 is made by Highlead) or a Nakajima 280L. Machines of the 111 class take all sorts of feet like cording, piping, zipper, etc. pretty much everything needed for the trimming trade. If you can work a trade with someone, and even have to add a few bucks, you will be a happier camper. Try Cobra or Nick-o-Sew.

Art


Nakajima 280L? I haven't heard than name in a LONG time! Great machine, long repalced (must be over 20 years?) with the now discontinued Juki DNU-241, and now current model is a Juki DNU-1541 series.

Edited by Gregg From Keystone Sewing, 06 July 2010 - 02:50 PM.

Industrial sewing and cutting, parts sales and service, family owned since 1977, Philadelphia, Pennsylvania USA, 215/922.6900 info@keysew.com www.keysew.com


#13 Art

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Posted 06 July 2010 - 03:49 PM

Hi Gregg,

I really put that out there so guys would know what it is if they run into one at a good price. In fact, buy two if they are cheap, there are still parts available. The 280 was a great machine and is still strokin' in quite a few trim shops.

Art

Nakajima 280L? I haven't heard than name in a LONG time! Great machine, long repalced (must be over 20 years?) with the now discontinued Juki DNU-241, and now current model is a Juki DNU-1541 series.


For heaven's sakes pilgrim, make yourself a strop!

#14 Stocksuspension

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Posted 06 July 2010 - 08:23 PM

I'm just now realizing that maybe this machine may not be enough for what I want to do.I'm gonna give it the old college try. Although I would like another machine it's out of the budget. Today I purchased size 19 needles for leather and some nylon threadl
. Still need to practice. My stiches are very short and tight. Is there a way to make the longer?

#15 Wizcrafts

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Posted 06 July 2010 - 09:15 PM

My stiches are very short and tight. Is there a way to make the longer?

Have you tried moving the stitch regulator knob to the longest stitch setting? If so, and it is too short, remove the stitch regulator knob and manually set its control cam to the longest possible position. The feed dog will only move so far, so you will have to max the setting with the adjuster knob off.
Posted IMHO, by Wiz





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