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What Is It?

What Is It? is a place for engineers to test their knowledge (and sense of humor). Each week the CR4 team will post an unidentified picture. We're looking for your best (or funniest) guesses at what it might be (or could be) in the comments below.
Got an image* that you think would stump the community? Submit the photo to the blog admins and we'll post it!

*No vulgar or obscene photo submissions, please.
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What Is It? for 9/16/12

Posted September 16, 2012 12:01 AM by Mizuti

This week's image:

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Joshi
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#1

Re: What Is It? for 9/16/12

09/16/2012 12:46 AM

Grinder!
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SolarEagle
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Re: What Is It? for 9/16/12

09/16/2012 2:15 AM
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#3

Re: What Is It? for 9/16/12

09/16/2012 11:33 AM

It looks like some sort of grinder for metal edged tools; maybe plane blades. The back appears to have a knife grinding jig that allows a metal blade to slide along a track between two grinding wheels of fifferent grits. The wheel in front appears to be for honing; no idea what the cone is for. The disk on the left appears to be a sanding disk used to flatten a steel tool before grinding an edge. By the looks of it, it might be found in a shop that does sharpening; not a production machine or a home DIY machine. My guess is based on my limited knowledge of sharpening and grinding equipment.

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Re: What Is It? for 9/16/12

09/16/2012 3:31 PM

Three ways to get the shaft.

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#5

Re: What Is It? for 9/16/12

09/17/2012 7:11 AM

Cone on a grinder for working the inside of castings.

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#6

Re: What Is It? for 9/16/12

09/17/2012 9:53 AM

Homemade lapidary machine.

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Re: What Is It? for 9/16/12

09/17/2012 9:30 PM

NSFW?

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#8

Re: What Is It? for 9/16/12

09/19/2012 5:11 AM

Rotary Sphincter Recalibrator & Hone for those really tough jobs?
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#9

Re: What Is It? for 9/16/12

09/19/2012 6:31 PM

It's a shaping plug for making spun metal funnels.

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