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Thread: Woodturning scraping tools

  1. #11

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    CedarSlayer's Tools
    To drill HSS, I use carbide bit for drilling cement, lubricant and a slow speed. I use cement bits because they are simple, cheap and easy enough to sharpen. You need a sharp bit but diamond grit will do a good job on carbide. Here is an example of a fellow drilling HSS.



    Bob
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  2. #12
    Christophe Mineau's Avatar
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    Many thanks Bob for the trick.
    the video is heavy duty !
    I did this one time with a drill made for glass and ceramic tiles, it did the job, but it's not easy.
    I'm curious to see what shape you give to your cement drill bits to tackle the HSS ?
    I suppose you don't leave that dull shape like for stone or concrete ?
    Cheers !
    Christophe
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  3. #13
    Hotz's Avatar
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    Hotz's Tools
    Bob really interesting this process.
    Sorry my mistakes in english.
    to share your tip >>> http://www.homemadetools.net/forum/tool-tips-tricks/ <<<

  4. #14
    Content Editor Altair's Avatar
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    Great work as always Christophe.

    Thanks Bob for the helpful video.

    Al

  5. #15

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    CedarSlayer's Tools
    Quote Originally Posted by Christophe Mineau View Post
    Many thanks Bob for the trick.
    the video is heavy duty !
    I did this one time with a drill made for glass and ceramic tiles, it did the job, but it's not easy.
    I'm curious to see what shape you give to your cement drill bits to tackle the HSS ?
    I suppose you don't leave that dull shape like for stone or concrete ?
    I don't do it a lot, but when I do, at most I just refine the edge. The high angle edge is stronger. As it is, when drilling small holes chatter can destroy a bit quickly. So I tend to go with really cheap concrete bits. The only time I have needed a precise and smooth hole, was making a HSS folding knife from a Harbor freight blank.

    I never did make a precise smooth hole. I ended up pounding a brass rod into a larger hole and then putting a precise smooth hole in that.

    Bob
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  6. #16
    Christophe Mineau's Avatar
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    Good idea for the brass bushing ! Thanks


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    Cheers !
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