Half a croissant, on a plate, with a sign in front of it saying '50c'
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In Car Cutlery Sharpening

K.E.R.S with added benefits.
  [vote for,

There is a lot written about flywheels in cars. Where to put them. Where not to put them. Why they work and how they work.

I'm not interested in that. If I'm going to have a wheel spinning really fast somewhere in the car I want to see it. Better still I want to use it.

The most obvious usage is to make the outer edge into a grindstone, either by milling or adding a nice sandstone veneer. This outer edge should protrude into the passenger cabin. I am now able sharpen knives, scissors and other items of cutlery in the comfort of my own car. Waiting at traffic lights has never been so much fun. As an added bonus I get a nice friendly shower sparks while I'm doing it.

I don't think there is anything in the highway code about using an in car knife sharpener while driving but I might be wrong.

Captain Pugwash, Oct 24 2012

12V_20Fondue I was wondering how we'd sharpen the fondue forks [hippo, Oct 24 2012]

There is a venerable tradition of sharpening things in vehicles http://carryapigeon...ife-sharpening.html
...though I couldn't tell if they do it whilst the vehicle is in motion. [DrCurry, Oct 24 2012]

Prototype version in action http://images.googl...1t:429,r:1,s:0,i:76
[normzone, Oct 25 2012]


       Yeah.. I'd imagine that it's a violation. The sparking can be deemed a potential fire hazard.
Jscotty, Oct 24 2012

       Excellent. [+]
8th of 7, Oct 24 2012

       Sharpening scythes on the move!
pocmloc, Oct 24 2012

       This is exactly what I hoped it would be.
Alterother, Oct 24 2012

       This opens up unlimitless possibilities, including having the prop shaft exposed. With chucks and a replaceable mid-section, you have a full in-car lathing experience available.
MaxwellBuchanan, Oct 24 2012

       Fold down the back seat and extend the bed into the trunk for those extra-long last-minute turnings.
Alterother, Oct 24 2012

       Can the In Car Woodshop be far behind? [+]
Grogster, Oct 25 2012

       Woo-hoo, I love this. +
blissmiss, Oct 25 2012

calum, Oct 26 2012

       Nice link [norm].
blissmiss, Oct 26 2012

       // you have a full in-car lathing experience available //   

       If the person operating the lathe is also the driver, does it qualify as a lather-guided vehicle ?
8th of 7, Oct 26 2012

       Flywheels have to spin pretty quick. Not sure I'd want a grindstone moving that fast.
RayfordSteele, Oct 26 2012

       A CNC machine might be useful too...
hippo, Oct 26 2012

       //Lather-guided// Awesome!   

       Perhaps the car's interior could come half finished. The gear lever knob starts life as simple block of walnut. It is up to the owner to complete and upgrade their car over time. The quality of the fittings would gradually improve as the driver slowly masters the art of in-car lathing.
Captain Pugwash, Oct 27 2012


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