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Wheeler & Wilson D9 Needle Bar Mod for 15x1 needles

Mike Sierra All Messages By This Member #4052 I found an old post on quiltingboard.com (https://www.quiltingboard.com/7058873-post17.html) talking about modifying the needle bar in order to accommodate 15x1 needles. I have been successful using Groz-Beckert DBX1 needles on my W&W D9 but it's kind of tedious to set the proper height and to have to align the needle manually (although using a vintage Kenmore needle threader helps). ? Since I recently managed to get a donor machine (W&W D9), I decided to give it a try. I am pleased to report that I was able to modify the needle bar to accommodate 15x1 needles. It was pretty easy and it works great. I tested with a variety of 15x1 needles (Schmetz, Organ, Singer) in different size (11,14 and 16) and also tried with the only 127x1 needle I have with no issue. I didn't try a DBX1 needle as it is even skinnier than the 127x1 and after dressing down the index screw to accommodate the larger diameter of the 15x1 a DBX1 wouldn't be held properly. ? I used a 2mm (5/64") drill bit on a drill press to enlarge the bore, making sure that I only drill enough so that the shorter 15x1 needle sits at the proper height. Since the 15x1 needle is slightly larger that 2mm, I used a cordless drill with the same drill bit to slightly remove some extra material. I finally grinded the little index screw on a sharpening stone, just enough so that the needle clamp assembly would fit on the needle bar. ? After reassembling, I checked the timing and it was perfect! ? On a side note, I noticed that the index screw of the original needle bar seems to be "welded". So I assume that not all D9 can be modified as easily.
Bill Wells #4053 Thank? you for running this experiment.? I too thought about the same thing in the past but did not have a needle bar to try it on. When you mentioned grinding the "needle position screw" (P/N 200391) do you mean flattening the leading machine thread? Is this to allow the shank to pass the set screw? As you know the slot head set screw is tiny at .107x.097 (3/32? X 3/32)and a 4-40? thread.? I wonder if altering an alternative screw (perhaps a socket head) would be safer? to alter. By "index screw" which one did you mean? Thank you for your work. It is good to know it will work.? I really like your drilling set-up.
Mike Sierra All Messages By This Member #4054 Edited Hi Bill, I guest what I call "index screw" is indeed the "needle position screw" that sits on the flat part of the needle shank, forcing the needle to be properly positioned. Not sure where to find a replacement screw so tiny! I removed enough material so that the screw can guide the needle AND the head of the screw is flush with the needle bar so that the needle clamp assembly can slide back. The attached drawing (definitively not to scale!) should clarify what I mean by index screw. Cheers.
Bill Wells #4055 Got it.? Small screws are available. I bougth some this to? replace one I had to drill out on my last rehab. Thanks for the drawing. toggle quoted message Show quoted text On Sun, Jul 11, 2021 at 4:06 PM Mike Sierra <trapit@...> wrote: [Edited Message Follows] Hi Bill, I guest what I call "index screw" is indeed the "needle position screw" that sits on the flat part of the needle shank, forcing the needle to be properly positioned. Not sure where to find a replacement screw so tiny! I removed enough material so that the screw can guide the needle AND the head of the screw is flush with the needle bar so that the needle clamp assembly can slide back. The attached drawing (definitively not to scale!) should clarify what I mean by index screw. Cheers. Attachments: 2021-07-11_09-27-22_520.jpg -- Bill Wells ronone69@...

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