Showcase 1
Dave (Trunk) Dowding - March 2023 - A Cheap Holder to keep Smart Keys In
I keep my 2018 Skoda Karoq on the drive away from the house. I have been concerned about the cheap
technology that can be purchased on the web to amplify the signal given off from a smart key inside the house.
Once the car keys signal has been amplified the thieves can pinch the car because it is a smart key the drivers
door can be opened and starting is carried out electronically. My method is not original but a variation on a tin can.
Method. (Good practice for parallel side hollow form with top)
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Empty a Schweppes Lemonade can and remove the top.
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Put car keys in can
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Walk to the car and catch hold of the door handle. With the keys in the can the car should stay locked.
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Open the car in the normal way and put the keys back in the can outside of the car.
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Sit in the car.
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With the keys in the can my car states "ignition key not detected". I have therefore assumed that the signal
given off by the key is blocked by the can.
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I turned up a hollow form to fit the can. The bottom piece fits as far up as where the can goes concave.
I then made a top in a contrasting piece of wood, and glued it all together.
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I then rechecked that everything worked and the car would not open.
I do not guarantee that it will work but my understanding of the Faraday principle is
that conductive material can stop a signal.
Dave (Trunk) Dowding - March 2023 - Sanding Arbour for Safe Sanding inside Hollow Forms
In Mark Sanger’s book "Turning Hollow forms" on pages 65 and 66 it shows a Ball End arbour for safely sanding inside
hollow forms. I have never seen a commercial version, however that doesn't mean they don't exist.
Material I used
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Wood from the odd box suitable straight grained for a handle and cone.
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40mm diam Thermoset ball knob tapped M10F
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20mm diam Thermoset ball knob tapped M8F
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Heavy duty self adhesive velcro
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M10 or M8 threaded rod to suit ball end
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M10 or M8 washer and nut
Balls and Velcro were sourced on the internet.
Method
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Machine handle to suit the user and bore hole either M10 or M8.
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Machine cone making sure that the radius inside the cone which holds the abrasive against the Velcro is a few
millimeters bigger than the ball. The other end is the same size as the washer used
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Glue threaded rod into handle using 5 minute epoxy. When set, fit the nut,washer, cone and ball in that order.
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Stick on Velcro around the cone.
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Fit abrasive as required.
Things I would do different.
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In Mark's book he has a true cone, mine is stepped. It does not get in the way but does make it wider and bulky.
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Mark used a longer rod in Aluminium by the look of it. I lengthen mine if required by screwing on a coupler and
another piece of rod.
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I used heavy duty Velcro which does not form easily.On Marks arbour looks like light duty Velcro.
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I made 20mm and 40mm ball end arbours. A 30mm ball end may have been more suitable for all forms.
I am happy with my arbours because it keeps my fingers a long way away from rotating machinery. The creases in the
abrasive paper do flatten out and do not mark the wood
Dave Dowding - (A valued member of the Kennet and Avon Woodturners) - March 2023
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