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Jim S
User Rank
Gold
Accuracy
Jim S   10/21/2013 10:29:34 AM
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I'm sorry to rain on the parade, but commentors have confused resolution for accuracy. With the construction there is no way to achieve 0.001 accuracy on the X & Y axis'. It is not stiff enough. Perhaps the mechanism totally unloaded could achieve that accuracy, but a mill involves side loads on the tool and it's supports in order to perform the task. I am still impressed with the iniative of building it. It is no substitute for a Bridgeport.

John Duffy
User Rank
Gold
Re: Impressive gadget
John Duffy   10/20/2013 3:07:04 PM
Thanks much, I appreciate all the positive feedback from this project.  Even though the  quality of technical writing was probably from somewhere between the design news editors and spellcheck, not any specific skill on my part. 

I would definately agree that a synthetic material or metal would make a much sturdier device, though as it is now, the mill itself would not be able to mill aluminum, or anything beyond hard woods with any accuracy or speed.  Plastics might work, but it would probably be better to use another mill designed for greater precision or strength, as this design was only used because it is very easy to make using only the tools in my schools woodshop.  Something smaller, and some type of linear bearings would probably keep everything from bending and turning as much as it does now.   

Thanks again,

John. 

Rob Spiegel
User Rank
Blogger
Re: Impressive gadget
Rob Spiegel   10/19/2013 5:23:12 PM
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Thanks for the comment, 78rpm. I'm sure John will apprecaite it. As for editing, John's submission required very little editing. This is one of the best Gadget Freak submissions by anybody, and I've seen them all from the start.

Charles Murray
User Rank
Blogger
Re: Impressive gadget
Charles Murray   10/18/2013 6:14:44 PM
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I agree, 78RPM. This author is an amazing inventor, regardless of age. His past inventions, an LED flashlight and LED lantern, were equally impressive. I agree with you -- he could have a great future in engineering, and the engineering profession would be glad to have him.

78RPM
User Rank
Gold
Re: Impressive gadget
78RPM   10/18/2013 5:08:24 PM
NO RATINGS
I've read a lot of Gadget Freak projects in the past couple of years and this is about as impressive and as useful as any of them. It's hard to believe this comes from a teen inventor. He has a bright future in engineering. I was also impressed with the quality of technical writing. I'm not sure if he had a good proof reader or editor, but the writing was flawless upon my first reading, and I'm usually quick to pick up typos, grammar, spelling, and punctuation errors.  So many technical articles look like they were written by someone for whom English was a second language.

I might actually try to build this project myself. I might consider other materials than wood, e.g., Corian® or aluminum.  Hey, how about making a wood version for the first cut and using it to make a second version of itself for the Corian or aluminum version?

Nice use of an encoder. Good mathematics knowledge for a teenager.

Rob Spiegel
User Rank
Blogger
Impressive gadget
Rob Spiegel   10/18/2013 11:13:16 AM
NO RATINGS
This is quite an impressive gadget -- and useful as well. Hats off to our young inventor.

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