http://www.instructables.com Thu, 23 May 2013 18:24:36 PDT BLOX v1.01 http://www.instructables.com/id/Torsion-Onager-175-yards/ http://www.instructables.com/files/deriv/F6X/GNO2/HDHXNPIL/F6XGNO2HDHXNPIL.SQUARE2.jpg http://www.instructables.com/files/deriv/F6X/GNO2/HDHXNPIL/F6XGNO2HDHXNPIL.SQUARE.jpg http://www.instructables.com/files/deriv/F6X/GNO2/HDHXNPIL/F6XGNO2HDHXNPIL.SMALL.jpg Alex and Joey Productions      I am a 8th grader and I built this onager for my science fair project.  All the metal was laser cut at my dad's work.  It took about two weeks to build, just because of all the trips we made.  This compact machine launches a golf ball over 175 yards.  I am working on a better trigger system now...
By: Alex and Joey Productions

Continue Reading »]]> Sat, 23 Feb 2013 10:22:11 PST http://www.instructables.com/id/how-to-make-a-pen-cap-catapult/
how to make a pen cap catapult - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FD1/UDKG/H82UHBN0/FD1UDKGH82UHBN0.SQUARE2.jpg http://www.instructables.com/files/deriv/FD1/UDKG/H82UHBN0/FD1UDKGH82UHBN0.SQUARE.jpg http://www.instructables.com/files/deriv/FD1/UDKG/H82UHBN0/FD1UDKGH82UHBN0.SMALL.jpg Mr. tony stark this is a great little catapult to annoy people with. all you need is pen cap paper( this will be the ammo ) tape first, crumple up the paper to make a little ball. you now have ammo. (sorry for the fuzzy pic) now for the catapult. take the pen cap and put a piece of tape on the back, foldin...
By: Mr. tony stark

Continue Reading »]]> Sun, 7 Oct 2012 21:29:21 PDT http://www.instructables.com/id/Mini-Siege-Engines/
Mini Siege Engines - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FZC/PA0N/H19RT1K9/FZCPA0NH19RT1K9.SQUARE2.jpg http://www.instructables.com/files/deriv/FZC/PA0N/H19RT1K9/FZCPA0NH19RT1K9.SQUARE.jpg http://www.instructables.com/files/deriv/FZC/PA0N/H19RT1K9/FZCPA0NH19RT1K9.SMALL.jpg WYE_Lance Ah catapults - possibly the most engaging and exciting project to introduce students to some fundamental ideas in physics and engineering. Stored energy, trajectory, the value of density in projectiles, and of course firing stuff across the room - so much to learn, and yet so much fun to be had! ...
By: WYE_Lance

Continue Reading »]]> Mon, 30 Apr 2012 11:54:36 PDT http://www.instructables.com/id/Pen-Or-is-it/
Pen: Or is it? - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F9Q/9Q4O/GUVTYA7N/F9Q9Q4OGUVTYA7N.SQUARE2.jpg http://www.instructables.com/files/deriv/F9Q/9Q4O/GUVTYA7N/F9Q9Q4OGUVTYA7N.SQUARE.jpg http://www.instructables.com/files/deriv/F9Q/9Q4O/GUVTYA7N/F9Q9Q4OGUVTYA7N.SMALL.jpg MakMelon The pen launcher: made out of a pen, this device shoots it's cap around 40 feet. It's hard to tell the difference between a regular pen and a pen launcher, until you press the button. This instructable shows how to convert a pen to a pen launcher. Warning: This can be used for target practice, but...
By: MakMelon

Continue Reading »]]> Sat, 12 Nov 2011 12:34:47 PST http://www.instructables.com/id/Desktop-Ballista/ http://www.instructables.com/files/deriv/F1C/HMJO/GP7IRXAP/F1CHMJOGP7IRXAP.SQUARE2.jpg http://www.instructables.com/files/deriv/F1C/HMJO/GP7IRXAP/F1CHMJOGP7IRXAP.SQUARE.jpg http://www.instructables.com/files/deriv/F1C/HMJO/GP7IRXAP/F1CHMJOGP7IRXAP.SMALL.jpg ICBMer This Ballista adds a touch of class to any Desk. The Ballista is Greek in origin but used by the Romans and by empires of the middle ages as well. Though it may not use the torsion springs of the original Greek Ballistas (which originated from about 400 B.C.) it still retains some of the original ...
By: ICBMer

Continue Reading »]]> Tue, 21 Jun 2011 22:37:07 PDT http://www.instructables.com/id/Floating-Arm-Trebuchet-F2K/
Floating Arm Trebuchet (F2K) - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FUG/JV9V/GGPETN90/FUGJV9VGGPETN90.SQUARE2.jpg http://www.instructables.com/files/deriv/FUG/JV9V/GGPETN90/FUGJV9VGGPETN90.SQUARE.jpg http://www.instructables.com/files/deriv/FUG/JV9V/GGPETN90/FUGJV9VGGPETN90.SMALL.jpg frankenboom Ladies and gentlemen, I present to you: The FIRST EVER (Free) COMPLETE GUIDE FOR CREATING YOUR VERY OWN FLOATING ARM TREBUCHET Of this size, anyway. When i was looking for a good set of plans for a floating arm trebuchet, i couldn't find a single free one. I know that a lot of people share my frustr...
By: frankenboom

Continue Reading »]]> Sun, 19 Dec 2010 20:52:00 PST http://www.instructables.com/id/Cardboard-Trebuchet/
Cardboard Trebuchet - More DIY How To Projects]]> http://www.instructables.com/files/deriv/F5D/TB7J/G9GQIPS2/F5DTB7JG9GQIPS2.SQUARE2.jpg http://www.instructables.com/files/deriv/F5D/TB7J/G9GQIPS2/F5DTB7JG9GQIPS2.SQUARE.jpg http://www.instructables.com/files/deriv/F5D/TB7J/G9GQIPS2/F5DTB7JG9GQIPS2.SMALL.jpg sphsengineering Welcome to our Instructable! We will be creating a Cardboard Trebuchet! Please visit our schools engineering website www.sphsengineering.com This was done as a engineering class project, and we had a set of rules to go by. 1. The trebuchet had to be made entirely of cardboard. For the parts that ...
By: sphsengineering

Continue Reading »]]> Tue, 25 May 2010 11:13:35 PDT http://www.instructables.com/id/Build-a-trebuchet-in-five-minutes/
Build a trebuchet in five minutes - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FKD/C8Z8/FEX36PQF/FKDC8Z8FEX36PQF.SQUARE2.jpg http://www.instructables.com/files/deriv/FKD/C8Z8/FEX36PQF/FKDC8Z8FEX36PQF.SQUARE.jpg http://www.instructables.com/files/deriv/FKD/C8Z8/FEX36PQF/FKDC8Z8FEX36PQF.SMALL.jpg aztennenbaum Have you ever wanted build your own trebuchet and fling cows onto unsuspecting englishmen? Well now you can (assuming that your cows are the size of marbles). Here is how.First off, you will need a few things:5 rulers with multiple holes in both endsA large nail or bolt (must fit through holes in ru...
By: aztennenbaum

Continue Reading »]]> Sat, 12 Apr 2008 00:14:28 PDT http://www.instructables.com/id/Trebuchet-of-the-large-variety-a-work-in-progress/
Trebuchet of the large variety (a work in progress), 4.28.07 update - More DIY How To Projects]]> http://cdn.instructables.com/FWV/8X7G/F04FMXC1/FWV8X7GF04FMXC1.SQUARE2.jpg http://cdn.instructables.com/FWV/8X7G/F04FMXC1/FWV8X7GF04FMXC1.SQUARE.jpg http://cdn.instructables.com/FWV/8X7G/F04FMXC1/FWV8X7GF04FMXC1.SMALL.jpg StepsoftheSun This is my second wooden, hanging counterweight trebuchet and the first well-documented one. It will be bolted together from many self-designed and self-constructed components, each about six feet in length. Hopefully, that strategy will allow for some degree of siege mobility and make fixing bro...
By: StepsoftheSun

Continue Reading »]]> Mon, 9 Apr 2007 16:57:06 PDT