How to Scarf Wrenches and Safe Thousands of Dollars | Table Saw Arbor Wrench

How to Scarf Wrenches and Safe Thousands of Dollars | Table Saw Arbor Wrench

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I needed a longer wrench for undoing the arbor nut of the big Bäuerle table saw. This saw has a high starting torque and the big blades apply even more torque to the arbor when cutting, which makes the arbor nut become tighter and tighter. So what I did is to cut a standard double ended spanner into two and weld on a new handle piece to each of the ends. This left me with two much longer spanners which allow me to apply a multiple of the original torque to the arbor nut and to undo it with ease.

50 Comments

  1. Steve Canny on September 15, 2022 at 1:35 am

    Nice Job Cosmas! That tool is much safer too. I aways feel uncomfortable applying high levels of force near sharp carbide tips. This keeps your hands well away as well as keeping the force required very controllable 🙂



  2. Dave Williams on September 15, 2022 at 1:38 am

    Love it



  3. Jamey Larrimore on September 15, 2022 at 1:39 am

    Awesome



  4. William Gill on September 15, 2022 at 1:40 am

    Nice work, you will never have that issue again and both wrenches can be applied in other areas. Which I think is the whole purpose of having a good tool.



  5. Bastelfreddy on September 15, 2022 at 1:43 am

    Gut gemacht . Und durch die schräge Naht hält es besser .



  6. Igor Krstic on September 15, 2022 at 1:44 am

    very smart.



  7. diego h perez on September 15, 2022 at 1:45 am

    Cosmas my thank you one more question can I use adjustable spanner for arbor nut I am in the process of making my table saw thank very much again



  8. Jules Webb on September 15, 2022 at 1:47 am

    Wow! You made a wrench longer. Tidy job though



  9. Danny Timms on September 15, 2022 at 1:47 am

    "Now of course to _just buy one_ would have been an option, or to… whack it with a hammer, or whatever… but I think that… this is just… much, much more -elegant- fun."



  10. tom7601 on September 15, 2022 at 1:47 am

    Great idea!



  11. MB Art on September 15, 2022 at 1:49 am

    Nice on. I always like your hacks and little inventions



  12. TheWoodWerker on September 15, 2022 at 1:50 am

    Very Nice Cosmas! Thanks for Sharing! Have A Super Week!…..Gus



  13. Irish Chippy on September 15, 2022 at 1:51 am

    This has brought back memories for me. In the mid 80’s whilst working in London, I went home to Ireland for a short holiday,. When I arrived back there was no blade in my 16" table saw. Our company’s driver wanted to do me a favour, and have the blade sent away for sharpening. The blade was lying there all sharp. "Where is the ‘cast’ plate that goes over the blade"? I said. "I broke it" he said "and it will take two weeks for a replacement". ‘WTF," I said "… you do know that it is left-hand thread". He replied "I know now". He had used crowbars, levers, hammers, blow torch, and what not, but was turning the nut the wrong way. Just a memory, Cosmas. 🙂



  14. j a on September 15, 2022 at 1:51 am

    What is your qualification Cosmos



  15. Perro Dinamita on September 15, 2022 at 1:52 am

    Excellent idea, Cosmas!! Bravo!!!



  16. Craig Tate on September 15, 2022 at 1:55 am

    Awesome idea



  17. Hans de Groot on September 15, 2022 at 1:57 am

    This is very clever! Thanks for sharing.
    When I need more leverage, I always look for a piece of metal where I could put the other end in.
    Especially with larger wrenches this can be a problem.
    I’ve never known that you can weld Chrome-Vanadium wrenches to steel.
    You opened my eyes on that.



  18. R Wils on September 15, 2022 at 1:57 am

    Now paint or plastic dip those handles?



  19. unogazzy84 on September 15, 2022 at 1:59 am

    Buy one? No! If you have a workshop and know how to make one, you make one. Great video



  20. tpsmith14 on September 15, 2022 at 1:59 am

    I subscribed because you didn’t buy one.



  21. Cactus! workshop on September 15, 2022 at 1:59 am

    well done!



  22. → to the knee on September 15, 2022 at 2:01 am

    Much better than buying one…



  23. Dragusan Tudorel on September 15, 2022 at 2:05 am

    Bravo. Keep it like this.



  24. Paul Davis on September 15, 2022 at 2:07 am

    Too much work! You could’ve just slipped a pipe or a square/rectangular tube over the existing wrench.



  25. isa ibrahim on September 15, 2022 at 2:07 am

    finish off with wooden grip,would look awesome



  26. fryrear technology on September 15, 2022 at 2:08 am

    I like the long angle cut. That’s smart making the weld longer and stronger



  27. Ashley Burton on September 15, 2022 at 2:08 am

    Great job!



  28. John Fithian-Franks on September 15, 2022 at 2:10 am

    Well done, anyone can just buy one, where is the fun in that?



  29. KSFWG on September 15, 2022 at 2:12 am

    Yup. Build it and they will come (off)



  30. Žan Pekošak on September 15, 2022 at 2:14 am

    When I hear a German say I need more leverage……well I hear a German say that he needs more leverage.

    No but seriusly. I havent watched it yet butt I can tell you its gonna be big.



  31. John W. Peterson on September 15, 2022 at 2:14 am

    You sir are an excellent craftsman. Thank you.



  32. Michael G on September 15, 2022 at 2:16 am

    I think a much bigger problem of the shorty-wrench is the danger of cutting your hand at the blade. well done. Franke bastelt Frankenschlüssel. passt !



  33. Don Fillenworth on September 15, 2022 at 2:16 am

    OK that does it. I’m subscribing!



  34. jim young on September 15, 2022 at 2:18 am

    Nice weld, not sure I’d trust my welding skills.



  35. Steffen, der Bastelbär on September 15, 2022 at 2:19 am

    Das ist ja wieder mal ein typisches Cosmas-Bauer-Projekt. Klar durchdacht und perfekt umgesetzt. [Daumen hoch No. 739] 🙂



  36. diego h perez on September 15, 2022 at 2:20 am

    Cosmas very good what size is arbor wrench please tell me



  37. Das Stackenblochen on September 15, 2022 at 2:22 am

    Mit etwas MoS2 Schmierfett (z.B. LM 47) im Gewinde ziehen sich Muttern auf Wellen bei weitem nicht so fest wie ohne. Das Fett verringert in keiner Weise die Festigkeit der Verbindung – meiner Erfahrung nach. Kupferpaste geht bestimmt auch (ist aber teurer :D)



  38. Lets-Bastel on September 15, 2022 at 2:22 am

    Kaufen kann jeder. Super gemacht Cosmas!!!



  39. Karlheinz Minameyer on September 15, 2022 at 2:23 am

    Hallo Cosmas, ich sehe deine Videos schon seit längerer Zeit. Nun hab ich angefangen Sticker von Youtupe’ern zu sammeln. ( Only real good Woodworkers) Es Entwickelt sich so langsam zur Sucht😊 Ich wäre froh darüber, ebenfalls einen von Dir an meine Wand zu kleben. Wie können wir dies Handhaben? Gruß Ambos



  40. Alex A. on September 15, 2022 at 2:24 am

    Für was ist die gasflasche gedacht?



  41. David Linke on September 15, 2022 at 2:25 am

    Most people don’t understand the satisfaction you get by building stuff on your own. Your solution is quite elegant actually, I would just have used some square extruded profile to hug the wrench.



  42. onjoFilms on September 15, 2022 at 2:26 am

    One thing I’ve found is the satisfaction that comes with making your own tools can’t be explained to the spouse.



  43. Ovais Saand on September 15, 2022 at 2:27 am

    My only complaint is you didnt fully polished it or painted it, that would have been more elegant 😉



  44. Tim Johnson on September 15, 2022 at 2:29 am

    I love the bit about ‘just buy one’. It’s like these fools don’t want to watch you makes something…



  45. Phil Vandelay on September 15, 2022 at 2:29 am

    Nice stick welding. I bet if you sand those down and polish them they’d look almost like they were made from one piece



  46. daniel redondo on September 15, 2022 at 2:29 am

    muy bueno



  47. rompdude on September 15, 2022 at 2:30 am

    Personally I just use another ring socket on the end. Do it regularly on the land rover for stubborn nuts. You also keep the short spanner at the end for ease once cracked off



  48. Johann Moser on September 15, 2022 at 2:30 am

    Hi Cosmas. Hast du deinen Bandschleifer selbst gebaut? Wenn nicht verrate mir bitte woher du ihn hast. Oder wer der Hersteller ist. Dank dir im voraus. Ein klasse Video wieder. Und warum kaufen wenn man es selber machen kann!!!



  49. Robo Gelder on September 15, 2022 at 2:31 am

    another reason why its better then using a hammer is that the hits from a hammer will damage the bearings



  50. traderjoes on September 15, 2022 at 2:32 am

    Why buy what you can make? If you have the tools and the materials, you can make exactly what you want!