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bcchurch
Joined: 10 Dec 2007
Posts: 25
Location: Racine, WI
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 Posted: Sun Feb 22, 2009 3:46 pm Post subject: Olfa Knife - SEM pictures for the curious builder |
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Thought I'd share some pictures I took showing what an Olfa Knife does to aluminum.
Regards,
Ben Church
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Ben Church
CH801
Racine, WI
Last edited by bcchurch on Thu Mar 19, 2009 3:40 pm; edited 1 time in total |
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lwinger
Joined: 21 Jun 2006
Posts: 229
Location: Tustin, CA
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| Posted: Sun Feb 22, 2009 4:07 pm Post subject: Olfa Knife - SEM pictures for the curious builder |
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That's crazy. Where did you make the magnified images?
Larry Winger
650/Corvair
Fuselage ready to rivet
Tustin, CA
Do Not Archive
On Sun, Feb 22, 2009 at 3:46 PM, bcchurch <bcchurch(at)yahoo.com (bcchurch(at)yahoo.com)> wrote:
[quote]--> Zenith-List message posted by: "bcchurch" <bcchurch(at)yahoo.com (bcchurch(at)yahoo.com)>
Thought I'd share some pictures I took showing what an Olfa Knife does to aluminum.
Regards,
Ben
--------
Ben Church
CH801
Racine, WI
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=231561#231561
Attachments:
http://forums.matronics.com//files/olfa_198.pdf
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Larry Winger
Tustin, CA
Plans building 601XL/650 with Corvair
Installing fuel system
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bcchurch
Joined: 10 Dec 2007
Posts: 25
Location: Racine, WI
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| Posted: Sun Feb 22, 2009 4:21 pm Post subject: Re: Olfa Knife - SEM pictures for the curious builder |
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Larry,
Can't seem to spend my entire work day working...
I'm materials engineer and use electron microscopes on a regular basis. It's good practice for me to look at "non-routine" things from time to time - just to keep the skills sharp.
Regards,
Ben
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Ben Church
CH801
Racine, WI |
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Ron Lendon
Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI
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| Posted: Sun Feb 22, 2009 7:28 pm Post subject: Re: Olfa Knife - SEM pictures for the curious builder |
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Ben,
Let us see what that edge looks like after working the edge with a vixen file, then again after all the burrs are removed.
Thanks,
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Ron Lendon
WW Corvair with Roy's Garage 5th bearing
CH 601 XLB
N601LT - Flying
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Corvair Engine Prints:
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PatrickW
Joined: 27 Oct 2006
Posts: 380
Location: Fort Worth, Texas
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| Posted: Mon Feb 23, 2009 11:24 am Post subject: Re: Olfa Knife - SEM pictures for the curious builder |
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There's some serious opportunity for learning here.
Would be interesting to see the differences between the various deburring techniques.
I can't help but to wonder what a reamed spar bolt hole would look like under extreme magnification. Or the contents of an oil filter after first engine startup. Or is Nuvite really the best polishing stuff.
The possibilities would be endless....
Any ideas on how much a good electron microscope costs? I wonder if a guy could build one?
- Patrick
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Gig Giacona
Joined: 10 Jan 2006
Posts: 1416
Location: El Dorado Arkansas USA
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| Posted: Mon Feb 23, 2009 12:48 pm Post subject: Re: Olfa Knife - SEM pictures for the curious builder |
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| PatrickW wrote: |
Any ideas on how much a good electron microscope costs?
- Patrick |
To the first question http://www.technicalsalessolutions.com/
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W.R. "Gig" Giacona
601XL Under Construction
See my progress at www.peoamerica.net/N601WR |
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thesumak(at)aol.com
Guest
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| Posted: Mon Feb 23, 2009 4:05 pm Post subject: Olfa Knife - SEM pictures for the curious builder |
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Maybe I can make a small contribution here: I spent much of my past life using an assortment of light and electron microscopes to help solve problems. While scanning electron microscopy is a powerful tool (as Ben so beautifully demonstrates) my favorite instrument has always been the simple stereomicroscope. Like SEM, these are used to study the surface of things. They have a large working distance and require no sample preparation. You can get a high quality used one or a low quality new one for a few hundred dollars. At home, mine gets used for removing splinters and what not. In the shop, I have used it to help make personal judgements on some of the issues we obsess about.
At my hanger, I use it to examine oil filters from my certificated ship. The good folks at Sacramento Sky Ranch provide good counsel on simple physical and chemical tests one can use to help identify unknown particles. (link below).
If you have kids around, the stereomicroscope is great for motivating them about science. Basically anything examined under a stereomicroscope is amusing, but biological stuff is best. For man made things, the closer you look, the more ragged it appears. For anything biological, the closer you look, the more wondrous it becomes.
Even cheaper and easier, I sometimes find that questions can be resolved by examination with cheap reading glasses with crazy high diopter. Helps my welding as well. Sorry for rambling.
Cheers,
Bill
Patrick said: Any ideas how much a good electron microscope costs?
http://www.sacskyranch.com/metfram.htm
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samwise
Joined: 01 Apr 2010
Posts: 1
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| Posted: Fri Apr 09, 2010 7:41 am Post subject: Re: Olfa Knife - SEM pictures for the curious builder |
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Thanks for sharing some pictures of your knife. Very much impressed!
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