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Nov 222011

We’ve had a few knitting machines rattling around the space over the years, but when fellow gadget lover Josh dropped off the lace carriage for our Toyota K747 knitting machine, I figured it was time to take it past basic stockinette stitch and explore the machine’s punch card mechanism.

Like most decades-old machines, a layer of dried oily gunk coated many of the moving parts. There are also a few broken/missing pieces. I’m in the process of cleaning / fixing the machine, and trying my best to document it as I go along. I got a hold of the K747 Service Manual, and started diving in. It’s oiled up now, and the next steps are to repair the broken needle selector and write up a program to generate punch cards for the laser.


 The picture above shows the offending broken lever. These 12 little blue levers tell the machine which needles to push out for the patterning, but lever #3 is broken so it never engages. Getting in to replace it is a bit daunting, in fact just getting to that lever in the first place was a bit of an event, I’m going to attempt to fix it with Sugru first. If that doesn’t work, then I’ll be makerbotting a replacement and praying I can get it all back together after dismantling it.

Since the machine is loud and takes up space I generally only work on it during the day when there’s more room, but if there’s sufficient interest I’d be happy to demo it at an upcoming craft night.

You can see more shots of the inside of the machine over on my blog: Knitting Machine Teardown Part 1 and Part 2.

  2 Responses to “Reviving a Toyota Knitting Machine”

Comments (2)
  1. I saw one of those last summer fleamarket in Finland. Hopefully you get it working. Interesting project.

  2. I have a Toyota knitting machine with lace carriage in excellent condition. Is there any value to it?

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