Union special for holsters?

[mrfixit]

Local sale close to home, this is offered about $125. Will this do holsters?

 

[Yetibelle]

Sorry no not a leather machine, but you could make a nice pair of jeans.

 

 

 

 

[mrfixit]

Thanks, seller didn't have a lot of info on it. I asked what it was used for, his reply was "it was in a sewing business "

[DrmCa]

25 minutes ago, mrfixit said:

"it was in a sewing business "

No shit?

It is a chainstitch machine for sewing the stretch fabrics. Many use them on non-stretch too due to the top and bottom thread both feeding from cones. But if you pull on the thread it goes zipppp... and undoes the seam.

Edited August 13, 2019 by DrmCa

[Gunnarsson]

19 hours ago, DrmCa said:

No shit?

It is a chainstitch machine for sewing the stretch fabrics. Many use them on non-stretch too due to the top and bottom thread both feeding from cones. But if you pull on the thread it goes zipppp... and undoes the seam.

Chain stitch with both top and bottom thread? How does this work?

[DrmCa]

Yes, chainstitch machines feed from cones, not from bobbins.

Just google "union special 31100 AK" and it all should become clear.

Edited August 14, 2019 by DrmCa
typo

[Gunnarsson]

The search words may be wrong, there are no exact hits. Image search gave me a bunch of diagrams mostly, not sewing machines, other types of searches gave a few somewhat relevant results. 

[DrmCa]

Darn! It's 31100, not 31000.

[Gunnarsson]

Much better search results.
Seems to be listed as a coverstitch machine, not chain stitch. I reacted because I can't figure out what a bottom thread would be doing in what I know as a chain stitch, like this:

[DrmCa]

The top goes the same as in a lockstitch machine, while the bottom thread does something similar to your diagram.

 

[Gunnarsson]

Allright, that does make enough sense.