I check the contact pattern of the gears and we see if the shim is actually doing anything. I'll also use the scope to check the commutation speed of the motor.
If you like these indepth teardowns, please consider chucking a few coins into the hat. You'll get to help with the longer term projects and see more behind the scenes vids. http://www.Patreon.com/AvE

By AvvE

14 thoughts on “Boltr: fein grinder blueing the gears and testing the electrics!”
  1. Avataaar/Circle Created with python_avatars Sean Wilson says:

    Greetings from Eastern Kentucky, definitely a 3rd world shithole within a 1st world territory. lol

  2. Avataaar/Circle Created with python_avatars therealracer135 says:

    We bought some Fein grinders for our welding workshop around june '21 and have had nothing but issues with them. In dec '21 they've just returned from their second trip to get fixes on warranty, mainly to do with trashed armatures. We've tried all sorts of flavours of grinders over the 13 years I've been here, but these have a strong lemony tang to them

  3. Avataaar/Circle Created with python_avatars lZ us says:

    Really miss these inndepth BOLTRs.

  4. Avataaar/Circle Created with python_avatars Amiel Rumbaua says:

    Was the original BOLTR for this fein grinder taken down? Having a hard time finding it although I really want to see it

  5. Avataaar/Circle Created with python_avatars Frank Murphy says:

    I'd love to see part 1 of this but I just can't find it 😕

  6. Avataaar/Circle Created with python_avatars stereomike111 says:

    Where's part one? I need to see that classic vidjeo!

  7. Avataaar/Circle Created with python_avatars michaelmazzen says:

    Why was the original teardown v j o taken down???

  8. Avataaar/Circle Created with python_avatars Keir Mcgeorge says:

    Thank you for your service

  9. Avataaar/Circle Created with python_avatars Felix says:

    Am i stupid as fuck or what happened to the boltr of the Fein grinder?

  10. Avataaar/Circle Created with python_avatars Richard Travers says:

    Prussian blue on a German tool . Do you know where else they found that partictular shade ?

  11. Avataaar/Circle Created with python_avatars tehOGRE says:

    Is the original video gone? Cant seem to find it.

  12. Avataaar/Circle Created with python_avatars tom thompson says:

    ive both fein and hilti , the fein stuff is a great match , and runs smoother , will it last as long ,
    ask me in a few years.

  13. Avataaar/Circle Created with python_avatars Giotto Laudo says:

    Part 1 got purged!? Noooooo!!

  14. Avataaar/Circle Created with python_avatars Andrew Browner says:

    part one its gone!?

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