[Sewing] incident report! artisan 618 needle bar replaced.

[Chris Murphy]

I'm excited about this too. It's been 'needed' there for years. I mean that in the sense that people were using the Juki for leather and talked of using it for bookbinding which wouldn't work so well or be good for it. 

Sent from my iPhone

> On Mar 17, 2016, at 17:56, rachel lyra hospodar <rachelyra at gmail.com> wrote:
> 
> Thanks for this report, Miloh! I didn't know noisebridge had a walking foot now, very impressive.
> 
> Is there a regular textiles night right now?
> 
> Xoxxxxx
> R.L.
> 
>> On Mar 17, 2016 5:53 PM, "miloh" <froggytoad at gmail.com> wrote:
>> Textile area Machine report:
>> 
>> TL;DR 
>> In the future, when changing the needle on the artisan 618, be careful not to remove 
>> the set screw all the way to replace a needle.
>> 
>> 
>> Kyle reports that today the needle fell out of the needle bar on the Artisan 
>> 618-1SC, (the artisan 618 is a $2k walking foot, an awesome artisinal straight stitch
>> sewing walking foot machine at Noisebridge).
>> 
>> When trying to reinstall the needle the set screw wouldn't tighten. Kyle determined this 
>> occured because the threads on the needle bar are stripped. 
>> 
>> It looks like when the needle was being replaced another time,  the needle bar set screw 
>> was removed all the way when replacing the needle. When the set screw was reinserted, 
>> it was cross threaded and stripped, so today wouldn't tighten to hold the needle.
>> 
>> Fix : 
>> 
>> The needle bar had to be replaced (~$17 at Apparal City in SF's SOMA district)
>> FYI, the apparal city tech offered to repair this onsite for $90. Kyle just
>> bout the part and repaired himself in about 2 hours.
>> 
>> Even though Kyle replaced the needle bar and set screw with a new one, this turned out 
>> to be a complicated repair involving disassembly and timing of the Artisan 618. One must
>> remove both presser feet, the feed dog, the needle plate, and the hook assembly.
>> 
>> When the hook and needle bar is removed, you are undoing the timing of the 
>> machine --- the hook rotates and the needle bar plunges in close timing with a
>> half mm of tolerance. The machine has to be retimed for this repair, which is part of what 
>> makes it a difficult repair.
>> 
>> 
>> Thanks Kyle! 
>> 
>> -r. miloh alexander
>> 
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