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Hi Guys, 

I have  handmade leather goods business in Japan. I run my Juki TSC-441 leather sewing machine for over 8 years, it is great machine! The only problem of this sewing machine is the marks on underside leather by the feed dog. Recently more and more orders of vegetable tanned leather bags that cannot accept the teeth marks. Is there anybody can help me?? Thanks in advance!!

I found a hand crank leather stitching machine on youtube (https://youtu.be/TGSqsUV1Abk), seems no feed dog, can avoid mark on leather? Anybody has experience with this machine?

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I run a Cobra 4, it is a Juki 441 clone. The feed dog is perfectly smooth and leaves no marks and still moves the leather fine. You might try contacting http://www.leathermachineco.com or http://www.tolindsewmach.com/cowboy.html

They both are dealers for these clone machines and they may be able to tell you if the feed dog from these machines will work in yours.

001.JPG

Edited by Mark842

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Those smooth feed dogs are also available online from places like AliExpress.com. Juki probably makes them, too, and I would hope there's a Juki dealer in Japan.  

You can also try a needle feed throat plate and remove the feed dog entirely. Which option is best really depends on the project. 

I made a lower needle guide for a 441 needle feed throat plate some time ago. This video shows how this setup can work.

Here's the screen shot of the AliExpress page:

Screen Shot 2018-06-21 at 8.10.13 PM.png

Edited by Uwe

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Uwe is right, you can use smooth feed dog to improve the mark on leather, even completely remove the feed dog, by using Slotted needle plate, see below picture and linkage:

http://www.cowboysew.com/saddle-makers-sewing-machine.htm

 

 

Slotted needle plate.jpg

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22 hours ago, Mark842 said:

I run a Cobra 4, it is a Juki 441 clone. The feed dog is perfectly smooth and leaves no marks and still moves the leather fine. You might try contacting http://www.leathermachineco.com or http://www.tolindsewmach.com/cowboy.html

They both are dealers for these clone machines and they may be able to tell you if the feed dog from these machines will work in yours.

001.JPG

Thanks Mark, I see the feed dog and presser foot are different from my Juki TSC-441.

21 hours ago, Uwe said:

Those smooth feed dogs are also available online from places like AliExpress.com. Juki probably makes them, too, and I would hope there's a Juki dealer in Japan.  

You can also try a needle feed throat plate and remove the feed dog entirely. Which option is best really depends on the project. 

I made a lower needle guide for a 441 needle feed throat plate some time ago. This video shows how this setup can work.

Here's the screen shot of the AliExpress page:

Screen Shot 2018-06-21 at 8.10.13 PM.png

Thanks Uwe, appreciate for your professional reply, really help me a lot. I will buy one for try......

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14 hours ago, CowBoyOUTLAW said:

Uwe is right, you can use smooth feed dog to improve the mark on leather, even completely remove the feed dog, by using Slotted needle plate, see below picture and linkage:

http://www.cowboysew.com/saddle-makers-sewing-machine.htm

 

 

Slotted needle plate.jpg

Thanks CowBoy, I checked your website, you are American company or Chinese company? The quality is ok?

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8 hours ago, sakuraleather said:

Thanks CowBoy, I checked your website, you are American company or Chinese company? The quality is ok?

We have been in selling heavy duty industrial sewing machines in United States, Germany, France and Italy for over 15 years!!!

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Hi, i am using seiko tf-6 leather sewing machine, the problem is the small hook can not sew with thick thread (about V138), I heard that the Claes patching machine can be with large bobbin for thick thread, anybody has experience? Second machine is no problem. 

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that is a bit of topic in a Juki 441 thread. But yes, the large hook CLAES patchers (subclass 30) easily can handle 138 thread and even larger.

Edited by Constabulary

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Thanks, do you know where can I purchase a used CLAES patching machine?

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