Sunny, cooler and DIY vegetable artillery
This   morning it is partly cloudy. High of 70F. Winds from the NW at 5 to 10   mph.
Tonight   it will be clear. Low of 55F. Winds less than 5   mph.
The   readings from my own weather instruments are:   
The   humidity is  85% with a Dew Point of   55ºF and a temp of   60.8ºF.
Our wind direction is Southwest between 0.8 MPH   and 1.3 MPH.  
Our Barometric pressure is  29.83 HPA 1008 and falling with a weather   graphic indicating rain.   
The UV   rating is 1 out of 16, Sunrise is at 5:45 a.m. sunset is 7:39 PM and Moon Rise   is at 00:00 p.m. EDT and the moon phase is in its last quarter.   
For the   pilots out there raw metar is:
METAR   KAUG 180953Z AUTO 27005KT 10SM FEW080 SCT100 14/13 A2976 RMK AO2 RAE12 SLP075   P0001 T01440133
Visibility is 10.0 miles/16.1 Kilometers with a   few clouds to 8,000 ft / 2,438 m and scattered clouds down to 10,000 ft / 3,048   m. 
We   received rain of 0.05 inches here over the past 24   hours.
IF you   are truly bored and need to get the kids away from "wired in" and online   entertainment stuff, why not do something really fun like building a small piece   of light artillery?
How   about a potato cannon with about 300 feet of range?
Its   cheap to make and only has 7 steps in the manufacturing process, a little bit of   time and a slight bit of 'gear-slippage' of your sanity and you can have a lot   of fun. Even the amunition for it is   bio-degradable.
 First, go   to:
http://www.instructables.com/id/Potato-Cannon-10/step7/Hair-Spray/
to get   the instructive pictures and detailed directions.
In   short-hand, it goes something like this:
1.   Barrel: The barrel is a five foot long one and a half inch length of PVC pipe.   I'll bet you have something like that in a dusty corner of your garage, Don't   you?
 2. Combustion chamber: This is a 3 inch   by 3 foot long piece of PVC pipe that is threaded on one end (you'll need a   screw-on cap for this end), and a 3 inch to inch and a half reducer on the   other.
3.   Barrel Muzzel: Shave down the outside end of the barrel's muzzel so that it is   sharp. You need to do this so that, when you load a spud into it, the edge of   the barrel shaves off the excess spud so that you get a really nice, snug   fitting projectile.
4.   Sparker: The sparker is nothing more than a BBQ grill igniter. You need this to   set off the hair spray.
5.   Mounting the sparker: The sparker needs to be mounted into the combustion   chamber. How you do it depends on what kind of sparker you have  If you can   drill the right size hole in the pipe and slide the sparker in, then seal it   with some fiber glass resin, that would be the best. If not, then cut a notch in   the pipe and slide the sparker up into the pipe  that way, then patch   accordingly.
6.   Connection: Connect the combustion chamber to the   barrel.
7. Hair   Spray: Hair spray is what you use in place of gunpowder. You need to spray it   into the combustion chamber and then screw on the cap. DO NOT spray it on the   sparker  Hair spray is very corrosive and it will rust the igniter rather   quickly.
I have   seen the foregoing design drop spuds more than 100 yards from the gun   emplacement. Not too bad for some PVC, hair spray andIdaho   russets.
One last   word of advice, when the spud leaves the barrfel it is hard to see. If you're   shooting spuds into the water, it is easier to see how far they went because you   can hear them land and see the splash. 
Comments
Post a Comment