Constabulary

post some pictures. I once bought front shaft for my 29K71 restoration from College sewing in the UK and I remember the gear was very tight on the shaft but it worked. But I had the OEM gear.

Please post a good clear picture from front and and back of your machine .

there either is a big thumb screw OR a slotted screw (flush with the lid or a bit deeper) in about the same spot for adjusting the foot pressure. But if you dial in a too low foot pressure the friction between needle and leather may lift your sewing material when the needle bar is rising.

It basically is a modern version of the Singer 45K Parts list an manual can be downloaded here: https://leatherworker.net/forum/topic/104255-neels-saddlery-tension-issue/#findComment-696717

Have you taken apart the press? Maybe the solution is simpler than you think. As I said before I once replaced tool holders with a round long nut. Its a quite simple part. Worth checking I´d say. What is the outer diameter of the tool holder? A.) is a guide screw for the tool holder, the tool holder either has a slot of a flat site where it slides along the screw. B.) is a lock screw for the big brass spindle guide C.) is a spindle guide - all spindle guides I have seen are right threaded so it should go out left. But C could be very tight. EDIT: quote from the text on this website: Presswerkzeuge - GETMORE-SHOP Tools for presses with M6 thread - like many machines from Astor, Stocko, Daudé - can be found under "Tools M6" Have you checked if you can screw in a plain M6 screw?

You are welcome! This sometimes happens when you strip the 29K´s. You are not the first and for sure not the last with this problem. 😉 Have fun with your patcher.

I agree with dikmann - we have a topic her about Singer SV machines:

I meant the shuttle driving lever 😉 but I guess you know what I mean.

quoting my self 😉 When I look at the 1st video I notice that when the roller of the rack driving lever and the inner cam track are to the furthest left you can see the "bulge" of the cam track of the cam pulley - know what I mean? in contrast to that - when I look at my 29K71 cams (almost the same as yours) it seems to me that your cam pulley has been installed incorrectly - rotated by 180° as it seems. When I can see the bulge in the pulley cam my roller is furthest to the right. This is when the roller is furthest to the left: Do you see what I mean?

Have you read the manual? There is an eccentric for adjusting the needle hook timing. Just checking - have you taken off the pulley cam on the right end of the machine that governs the up and down movement of the arm lever which is attached to the needle bar?

BTW - what I figured today is that the A51 ex factory is a "button covering machine". Not sure what you want to do with it but the Co. still exist and maybe worth checking with them: https://www.astor-berning.de/fashion/fashion-maschinen/187/a-51-knopf-ueberziehmaschine

Pictures of my lever press - its fairly a beast compared with "plain spindle presses". I needed an M10 (male) x 1/4 (female) adapter to make it work. Meanwhile I figured this must have been the manufacturer of my press but back then no data were available. https://www.loxx-produkte.de/live/Historie-Unternehmensgeschichte/historie.aspx But I doubt any spare parts are available anymore. Anyway I´have what I need and this thingy will last for ever. I have never seen a 2nd press like this either.

I do not know ASTOR but usually the threading for the upper die is either 1/4" (UNC) or M6, at least on the presses I worked with. I once restored two very vintage unknown brand presses with odd threading for a friend and on both I was able to replace the inner part that holds the upper die with a plain round m6 long nut (Gewindemuffe or Verbindungsmutter as it is called in Germany). So he can use standard M6 dies. https://www.ebay.de/itm/165996998186? The outer diameter was the exact same as on the die holder it required tinkering but both presses worked w/o problems. For my own press (I´ll post pictures later) I also needed an adapter but he company I bought from (IIRC it called IX-Trade or so) no longer exists (a way different press anyway) as it seems but there are some CO's . in Germany that sell different adapters, not sure if there is one that suits your needs: https://www.jstrading.de/de/pressen-oesen-zubehoer/Zubehoer/ or this one, they even mention ASTOR: https://www.getmore-shop.com/epages/61848837.mobile/de_DE/;ClassicView=1?ObjectPath=/Shops/61848837/Categories/Presswerkzeuge

You asked that before:

Are you sure you need a 3-4mm thick thread? 😳 Have you looked on a ruler how thick 3 or 4mm really is? I doubt there really is a machine that can handle such "ropes" or "laces". As a sample - the average paracord (like 550 / type III) is 4mm tick. I once sold my Singer 7 to someone who sewed felt pads for pack animals and IIRC he used NM 230 or 250 needles and the thread for such needles is about 1mm thick. What is you project maybe we can go from there.

same as for singer 111w https://www.ebay.de/itm/142635485129 College Sewing or Trojan Sewing in the UK should have them as well EDIT: https://www.college-sewing.co.uk/parts-by-type/single-needle-walking-foot-feet/singer-walking-foot-feet/singer-111w-walking-foot-feet.html?p=3

I doubt it will be an upgrade. Why do you think it could be an upgrade? If the Consew has a larger bobbin that IMO would be the only improvement. Both are Chinese made clones of the Singer 29K with minor downgrades from the last Singer version 29K7X

if you cant find one used check with CL Machinenbau - they still make the shuttles for the 8346-20 https://www.cl-maschinenbau.com/de/leistungen/naehmaschinen.html But do not expect them to be cheap 😉

just checked the parts list - it should be screw 91-100 331-15

IIRC the 491 is using a leaf spring for the foot pressure (similar to Singer 111w - kind of) so there should be a screw on top of the machine at about in the middle of the top arm.

you have to pull out the foot bar. You have to loosen / remove theses 3 screws too - see rec circel. Alos make sure you removed the return spring that pulls back the presser foot (not meaning foot pressure spring)

to me it looks like a Juki 555 fabric / tailoring machine of some kind

you probaly have chosen a short stitch lenght or the bell crank lever is worn down (or both). Maybe teeth on the presser foot are dull / worn down. Also theck if the "gib" on the stitch lenght adjuster is installed correctly. See pictures here:

Hope this helps 😉

Looking at this picture I belive the Singer 107w hinges are the same. https://www.college-sewing.co.uk/202258-210844-machine-hinge-hook-singer-107w.html?srsltid=AfmBOopJb1ilppAZoElRixRJKheoNF9ftFELvIPI6Cw_MaVvn7w75taq https://armastore.eu/210844-singer-107w-hinge-hook You will get them on your end as well just check the numbers online But I would probably buy the female part too - you never know....