Simple drilling machine for hard stones

Tapirchik
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Tapirchik
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Joined: 4:31 PM - Mar 22, 2013

8:10 PM - Aug 11, 2018 #1

Hi all, this is the first drilling machine I've thought. The flywheel is lead. It spins in only one sense. I've started with a wood rod and wet sand. But for little holes, it wasn't a good solution so I've stuckd a little point of flint so I've been able to drill tiny holes in a little piece of flint.


DSC_0514.JPG DSC_0513.JPG This is the piece I've choose for this experiment.  I've got this idea and I've thought to share with you 

https://www.youtube.com/watch?v=F_QS0BHL0Zw&t=20s

After about one hour, this is the result



So I'm able to continue drilling without the device

https://www.youtube.com/watch?v=NkhL1ztfQEM

I hope you like, best regards, Ruggiero
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Tapirchik
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Tapirchik
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Joined: 4:31 PM - Mar 22, 2013

2:40 PM - Aug 14, 2018 #2

I've tried to use it as that one I've shown in the photo and it works. It oscillates a bit



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I have to add that the point must be filed, without any sharp edge




This is the point I've started with







I've filed it but not enough so after half hour it's broken 




I've also tried this alternative way



Immersed in water, the wood swells and grips the bone
I've tried to drill on the opposite side.




I hope to end drilling before s.Valentine 

Using the method of the last video, I've started to drill the other side. There's a ridge right over the hole. After almost half hour, started to appear something
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Tapirchik
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Tapirchik
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Joined: 4:31 PM - Mar 22, 2013

5:54 PM - Aug 21, 2018 #3

This is another drill. It was fixed to the wall

So I've fixed it on the table to show you how it works
Last edited by Tapirchik on 5:54 PM - Aug 21, 2018, edited 1 time in total.
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Tapirchik
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Tapirchik
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5:55 PM - Aug 21, 2018 #4

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Tapirchik
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Tapirchik
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6:03 PM - Aug 21, 2018 #5

The eccentricity of the flywheel makes it shake spinning to high speed

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boletus
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boletus
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Joined: 6:15 PM - Jul 22, 2016

2:23 AM - Aug 23, 2018 #6

Very cool. You always create some interesting things. Thanks for sharing.
-Jason
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Tapirchik
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Tapirchik
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Joined: 4:31 PM - Mar 22, 2013

6:13 AM - Aug 23, 2018 #7

Thanks Boletus

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