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  1. #1
    Join Date
    Dec 2009
    Location
    Phoenix AZ
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    Default My DIY Power Hone

    I didnít want to pay $600 plus for a power hone (sorry Power Hone manufacturers/builders) so I set out to make my own. Came up with this. Total cost was around $380 (I used some parts I had on hand). Hindsight being 20/20 I figure you could build one similar (better actually) buying all the needed parts for around $350. Is all "plug and play" built with a minimum of hand tools and readily sourced parts.

    Variable speed with full torque throughout speed range (0-1050 rpm max at factory speed control trimpot settings, capable of setting to full speed of 1750 rpm) - Continuous duty top of the line industrial rated 90v dc motor - Reversible

    Is a bit of a bench beast at 12" x 12" x 8" but sure does hog out gravers fast. Used a 1/4hp and could have easily went with a 1/6hp (and made it a bit smaller in the process). I was worried about the spacers being stiff enough to hold the motor securely but the junction box enclosure is surprising solid and robust and the motor is rock solid, no twisting or flexing what so ever. I cheated on the reverse switch (they wanted $60 for an OEM one for the speed control!!!) and added a simple reverse polarity toggle switch between the speed box and motor. Put it in the box so no accidental switching while in use, hate to fry my $124 SCR speed control!
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    Have a good one!

    Ron Jr. Scrimshaw & Engraving

    Click the link below to visit my website.
    Ron Jr. Scrimshaw & Engraving

  2. Likes Sandy, Marrinan, mitch, RDP, JMiller and 4 others liked this post
  3. #2
    Join Date
    Oct 2013
    Location
    Abilene TX Ruidoso NM
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    388
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    Default

    A professional looking unit, great job.

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  5. #3
    Join Date
    Jul 2007
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    1,884
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    Default

    wow, Ron, that's pretty Swiss (as an old machinist i knew used to say). any chance you'd post a parts & suppliers list for those inclined to replicate your efforts, either exactly or in part? i love the idea of using the DC motor shaft directly.
    Mitch Moschetti

    MRM ENGRAVING
    www.mrmengraving.com

  6. #4
    Join Date
    Dec 2010
    Location
    Northeastern North Carolina
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    166
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    Default

    Ron, NICE. Thanks for sharing.

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  8. #5
    Join Date
    Dec 2009
    Location
    Phoenix AZ
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    187
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    Default

    Quote Originally Posted by mitch View Post
    wow, Ron, that's pretty Swiss (as an old machinist i knew used to say). any chance you'd post a parts & suppliers list for those inclined to replicate your efforts, either exactly or in part? i love the idea of using the DC motor shaft directly.
    Thanks Mitch, I take that as a huge compliment I made a whole new post with all the info and links.

    http://www.engraverscafe.com/showthr...-for-Under-350
    Have a good one!

    Ron Jr. Scrimshaw & Engraving

    Click the link below to visit my website.
    Ron Jr. Scrimshaw & Engraving

  9. Likes mitch, JMiller liked this post
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