Leatherbag

Hello, After I have now looked for over a year throughout Germany for used Fortuna / Fratelli Alberti and always found only ancient, half rusted machines without knife covers, I had finally decided to buy a new China machine (Global SK111) from a very nice and competent dealer. Just before I was about to buy it, I learned that these machines are now available in a new version: Instead of one servo motor with V-belt, there are now two direct drive servo motors installed directly on the machine head, so that knife and feed can be controlled separately: the transport can be very slow, while the knife turn very fast, but both only turn when you push the pedal. I'll attach a pdf with all information about that machine but I would buy it without aspiratior because it would be too loud for my neighbours and I dont have enough space for it. This machine costs about 700 euros more than the basic version with one v-belt-motor. Thats pretty much, but I would be willing to pay that if there are significant advantages. Here is a video of such a direct drive machine: https://www.youtube.com/watch?v=xAbOb1N9x88 However, my dealer says he finds the result nicer with the 1-motor machine. He says that if the knife rotates so fast, the skived area would look like polished/burned. He recommends me the 1-motor machine with a good servo motor that you can adjust slowly and to keep the knife very sharp. His youtube videos using this 1-motor machine with slow servo motor look great (he skives very slowly around the curves), but I'm reading all over this and other forums that it's a nicer result to have the knife running at top speed. I am thinking of driving to the dealer to test it myself, but he is over 300km away and Corona makes everything a bit complicated. Does anyone have experience with these direct drive skiving machines? Do you think it's worth the extra cost or should I better take the basic version? Are the direct drive motors harder/ more expensive to repair if there are any issues with it? I'm still not 100% convinced by the china machines, but the dealer is rebuilding a few things to make them safer and better and I would get a detailed briefing from him. Any help would be really appreciated, I am still pretty overwhelmed. Greetings from Germany SW-801E-ENG-ESP.pdf

Ooops, I did not mean DC servo motors but DIRECT DRIVE Servo motors...:)

Hello, last year came Corona and other priorities, so I now continue with my skiving machine search. After I have now looked for over a year throughout Germany for used Fortuna / Fratelli Alberti and always found only ancient, half rusted devices, I had finally decided to buy a new China machine (Global SK111) from a very nice and competent dealer. Just before I was about to buy it, I learned that these machines are now available in a new version: Instead of one servo motor with V-belt, there are now two DC servo motors installed directly on the machine head, so that knife and feed can be controlled separately (I'll attach a pdf with all information about that machine but I would buy it without aspiratior because it would be too loud for my neighbours and I dont have enough space for it.). This machine costs about 600 euros more than the basic version with one motor. However, my dealer says he finds the result nicer with the 1-motor machine. He says that if the knife rotates so fast, the skived area would look like polished/burned. He recommends me the 1-motor machine with a good servo motor that you can adjust slowly and to keep the knife very sharp. His youtube videos using this 1-motor machine with slow servo motor look great (he sharpens very slowly around the curves), but I'm reading all over this and other forums that it's a nicer result to have the knife running at top speed. The dealer is over 300km away and currently he only has another China brand in stock which I don't want. Does anyone have experience with these 2 motor machines? Do you think it's worth the extra cost or should I better take the basic version (in an emergency I could add a second motor myself, but then of course that's the less elegant solution). I'm still not 100% convinced by the china machines, but the dealer is rebuilding a few things to make them safer and better and I would get a detailed briefing from him. I think that I have no other choice, because there seems to be no better alternatives in the whole of Germany. Any help would be really appreciated, I am still pretty overwhelmed. Greetings from Germany SW-801E-ENG-ESP.pdf

Thank you very much for your answer, I understand more and more why it makes sense to have an aspirator. But I am pretty confused about the motors. So you machine has only ONE motor, that it connected to the machine and to the aspirator? Because the seller just told me that there are TWO motors, one for the machine and one for the aspirator, but only ONE cable (with a 380V plug). He said that on the machine's motor, he can read that it can be changed to 220V but he is not sure if the aspirator motor is compatible with 220V too. I have no idea from motors (just changed the clutch motor of my Adler with a servo motor, that was very easy), but I have no idea what kind of motor is build in the aspirator and what options I have in order to use it with 220V.... I guess this skiving machine is a pretty good deal, but it only makes sense if I can make it work with 220V. Any ideas what to check?!

Just got an answer from the FAV seller. The aspirator has a seperate motor, both motors are 380V, which I dont have in my workshop. He says that changing two motors makes no sense and that I should install a 380V in my workshop. But as its a small rent workshop in an apartment builing, I guess that this is no option...are the new Global or China brands really as bad? I would get a new Global for around 900 Euro with table and servo motor or the China machines for around 600 with table and servo with all spare parts available. But without aspiration. Would you recommend the aspiration due to the dirt reduction or because the dirt could cause problems with the knife? I really would have to work on a skiving machine and make some tests with my leather first, its so hard for me to imagine and to decide...but there is no dealer in my area..

Thank you, it would be just perfect if you could find it out, because I would prefer to replace it by a servo motor (mainly because of the noise) and I am not sure if its possible to connect the apirator with the same servo motor as well. Will check the video now. Thanks again and enjoy your meal!

Ok I just found this video: Guess its pretty loud in the rooms itself but it shouldnt disturb my neighbors... One more question: What does "separate roller transport" mean and is it useful?

Hi @RockyAussie Thank you very much. I am just wondering if the aspirator makes lot of noise? My workshop is a very small 16sqm room in an apartment building and the machine with the big aspirator looks kind of huge :D Also, the FAV seems to have a clutch motor with 380V (dont see it well on the pictures, will have to ask the seller). I need 220V and I prefer a servo motor. So I'll have to replace this too. But how does the aspirator work? Is it connected to the motor? Or does it have its own motor?! Sorry for asking these stupid questions but I have never worked on a skiving machine before

Hello, last year I puchased a beautiful Adler 69 and this year, I want to invest in a skiving machine for my small leathergoods brand. I am reading everything I can find about skiving machines, but I still dont figure out what would be the most important things to look for for me. Currently I am mainly working with leahter of around 1.0-1.2 mm thickness, but I am planning to sew also thicker leather of around 2mm. - Do I need a vacuum suction? I am producing only very small quantities, but I read that the suction is not only recommended for preventing dirt but for preventing pieces getting stuck in the knife and disturbing the transport. - Is a bottom feed machine good, or should I look for a bottom and top feed machine? - I thought of spending around 500-800 Euro for a used machine, but I am somehow flexible if there are good arguments There is a seller in my neighborhood who would sell me an old Fortuna for around 600 Euro (he first wanted 900, but then pretty went to 600 pretty fast). It looks pretty good (only saw pictures), I'll have to replace the table and the motor and there is no vacuum suction. I'll contacted Fortuna and they told me that it's "Fortuna LP II", built in 1949, and that the only available parts are the common consumables like knifes, grinding wheels etc. So I am wondering if this is a good deal or if I should better look for machines where I can replace more parts like the feet etc (but I also read that Fratelli Alberti parts are interchangeable with Fortuna, not sure if this is right). Also, there is another seller who sells a Fratelli Alberti AV2MA built in 2017, with vacuum suction for around 900 Euro. But its pretty far away, I'll have to decide if it makes sense to drive there. It is "with feed" and "separate roller transport" - what does that mean? Or should I better buy a new Global where all spare parts are available without any problems? I am completely overwhelmed, so I would be really pleased if you could help me about picking the right one. Thank you very much, best wishes from Germany

Parfait, merciiiiiii beaucoup!!!

Merci beaucoup Puis-je vous demander quelque chose d'autre? Si tu places le sélecteur au maximum (tout en bas), peux-tu me montrer une vidéo de la manière dont le transporteur et les pieds se bougent? Comme je l'ai fait dans cette vidéo https://vimeo.com/351373018? Ce serait une grande aide. Merci beaucoup d'avance

Ok thank you. So I'll have to find a reason why mine moves. Anyone any ideas? I noticed that the needle / feed dog synchro is not good, please find a video here: https://vimeo.com/351201096 Could these problems be connected to each other? What should I do now? Many thanks in adnvance!

Ok thank you. Just to be sure because on your photo the stitch length is still 0 - what is when you set it to the maximum stitch length (move the stitch length selector as far down as possible) and then sew - does the selector move? Mine is moving slightly up and down, you can also feel it when you put a finger on it while sewing. Here is a picture to see what I mean.

Ok, great, thank you so much for the video, that helped a lot!! I am not home now, will compare it later with mine (when I took the video I just turned the handwheel, will do a test with the motor too) but I think they move pretty similar. Now I've got a second question: If you set the stitch length to MAX, does your stitch length lever (the black thing you also pull to do backwards stitched) move? Because mine moves and I am pretty sure that this is not normal..https://vimeo.com/351023059

ok, enjoy your meal, I will continue tomorrow with learning how the movement of the stitch length lever could be connected to the slight backward and foward movement of the feed dog and maybe also with the noise (which is pretty quiet now but I still feel that there is some resistance). I just cant relay until everything works how its supposed to be

Your German is very good! But I'll continue in english, so that most of the readers here can follow. But at Adler 69, it never moves up and down - its only pushed down by the transport foot veeery lightly like about 1-2mm and comes up when the presser foot goes up - is it what you mean with "up and down"? It slightly moves backwards and forwards but if I try it with material, it always stitches into the same hole. So I thought that this would be ok. But now, that I have this problem with the stitch regulation lever moving, I am wondering of these two problems could be connected...?!

Ok, so I'll try it with my supermarket French, so at least one of us can stay with its mother's language: Ce que je voudrai savoir c'est si tu peux me dire que la griffe et l'aiguille se bougent si tu met la manette de réglage de point à 0. Ici ma machine https://vimeo.com/333766977 et tu peux voir que la griffe et l'aiguille se bougent. Mais le réglage correct c'est qu'ils ne bougent pas. Je ne sais pas si ce bougement est normal ou si autre machines ne bougent pas du tout

So crazy, our machines are sisters, your serial number ends with 15 and mine with 16 Ok, but what do you want me to tell with the picture?

@paloma You won't believe it: But I just found a picture you posted here from your machine and I am pretty sure you purchased it in Mannheim, Germany - right?! Because I bought mine there too in April when they had both machines available :D I saw it at the scratched "Durkopp Adler" letters, because I took pictures of both machines. So I guess I took the wrong one as mine has some problems :D And second surprise: Your birthday is at the same day as mine :D This is so crazy :D

Thanks to everyone. I am pretty close to solving the noise problem: On the foot pressure regulator (the bronze part on top of the machine), there is a little pen inside and my dealer obviously placed it in the wrong way, so the presser foot bar was pushed out of position. Now, the noise has almost gone (its still there when sewing very slow or via handwheel) and I would be happy to solve this. But now, I've found another strange thing, that may be has something to do with the noise problem and with the "feed dog moves altough stitch length is 0" problem: When sewing, the stitch regulation lever moves! Has anyone an idea what could cause this?! Please find a video here: https://vimeo.com/351023059 @paloma I think you mean something else. What I meant is the stitch length - When you set it to 0mm, does your feed dog and needle move? Please find a video here https://vimeo.com/333766977 showing mine (which move although they should not) and an instruction (in french ;)) in the picture below.

@palomaYou could do me a huge favour if you could check the following on your machine (as you have exactely the same model): The manual says: "In the zero position of the stitch regulator lever, the feed dog and theneedle should not make any advancing motion when the handwheel ismoved.–Set the stitch regulator lever 3 to “0”.Loosen the butterfly nut 1.Turn the adjusting screw 2.Tighten the butterfly nut 1.–Turn the handwheel.The needle and feed dog should not make any advas it with ncing motion." At my machine, it lightly moves though, please see here: https://vimeo.com/333766977 and here: https://vimeo.com/350582370 But if I sew on material, it doesnt transport the material, but its moving though. Dont know if this problem is connected to the sound problem. How is it with your machine? Does it move or is it completely quiet when you set stitch lenght 0 and sew?

Ok enjoy your meal Yes it would be soooo great if @Uwe could help, I already enjoyed many of his videos

Yes ok, I will do some tests with the bar. A bent arm is what I am afraid of because I am not sure if I am able to bent it to the right form and I am afraid that its not available via Adler. Asked them already and waiting for a reply. Have to leave now for about 2 hours and will let you know later. Thank you very much for your help.

Ah sorry, I made a mistake - thought you'd have the same machine. On my Adler its 7.1mm. But I checked again and the bearing fits perfectly on the shaft, but there are about 2mm space to the right until the silver part, but I guess thats normal. At this silver part there is normally a sliding piece (I've removed it on the picture), which should lie tight on the bearing in order to prevent a kind of growling sound when the presser foot moves (sais the manual and I thought that this is my problem), but no matter how I position the sliding piece, the sound is still there. There is another thing that I noticed when I checked my machine with the service manual. I'm just saying this because I am wondering if it could have something to do with the noise. The manual says: "In the zero position of the stitch regulator lever, the feed dog and theneedle should not make any advancing motion when the handwheel ismoved.–Set the stitch regulator lever 3 to “0”.Loosen the butterfly nut 1.Turn the adjusting screw 2.Tighten the butterfly nut 1.–Turn the handwheel.The needle and feed dog should not make any advancing motion." At my machine, it lightly moves thoug, please see here: https://vimeo.com/333766977 and here: https://vimeo.com/350582370 Do you think that this could have something to do with it? Unfortunately there are no instructions about how to correct this.

Ah ok thats pretty interesting. Mine can move, as shown here: https://vimeo.com/manage/350787680/general I thought maybe there is a piece missing, but checked with the picture and all pieces are installed at my machine in the same way. Could you please tell me how many mm is the width of your roll? Maybe mine is to short?!