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Using a Bench grinder to knock down serious damage and buffing

Recent Forums Main Forum Techniques and Sharpening Strategies Using a Bench grinder to knock down serious damage and buffing

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  • #55703
    Kenneth
    Participant
    • Topics: 22
    • Replies: 29

    So I have a bench grinder which has low and medium grit stones as well as several buffing wheels. Does anyone use bench grinders for repairs or polishing?

    #55721
    airscapes
    Participant
    • Topics: 13
    • Replies: 311

    I built a variable speed belt sander with angle gauge for this purpose.. bench grinder runs way to fast …

     

    #55722
    Kenneth
    Participant
    • Topics: 22
    • Replies: 29

    Maybe I can buy a adjustable switch and cut it into the cord to turn down the speed

    #55723
    tcmeyer
    Participant
    • Topics: 37
    • Replies: 1988

    Those variable speed switches work only on AC motors with wound rotors and brushes.  Not sure, but I think variable frequency drives usually require some form of feedback device (tachometer or position sensor) to work.  I’m sure there are some cheap Chinese versions out there, but I haven’t pulled the trigger on one yet.  I’d like to put one on my Buffalo drill press.

    Bench grinders come in two versions – low speed (1750 rpm) and high speed (3450 rpm).  I bought a Rikon low speed version last year.  I use it for cleaning up damage in woodworking hand plane irons.  I use very light passes, and with the low speed, I don’t see any discoloring of the steel.

     

    1 user thanked author for this post.
    #55724
    Matt
    Participant
    • Topics: 3
    • Replies: 5

    That’s some good information tcmeyer.  I have personally used a bench grinder for reprofiling some old knives at the tip where it broke off.  It has helped with repurposing a good knife, but I would be hesitant to run it across the full length of the blade.  I like the idea of the variable power adapter and the reviews for this model seem good given the feedback being used on all sorts of electronic equipment including routers.

     

    #55725
    airscapes
    Participant
    • Topics: 13
    • Replies: 311

    Here is a link to a post with all the details of the belt sander I hacked together.  It is near the end of a 3 page post so you can bounce back to the beginning to see how it all came about if you like.   I use this for all sorts of stuff, have not used it for a knife in months.. love this little guy !

    https://knife.wickededgeusa.com/forums/topic/belt-sander-grinder-sharpener/page/3/#post-51349

    • This reply was modified 2 weeks ago by airscapes.
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