There are gun powder driven concrete nails (link). Since some people apparently have problems with fenceposts (link) this principle could be applied to fence posts too. Fence posts are bigger so it would take a somewhat bigger device to drive them. The idea is to build fenceposts as ballistic missiles. You go to the yard, measure the locations with a GPS device which sends the information to the dealer via Bluetoothe etc. Then the dealer launches the posts right where you want them.
Warning: During times of war or if the Dept. of Homeland Paranoia calls out level red GPS will have reduced accuracy. To avoid personal injury keep at least 100 ft. distance from intended site of fence.-- kbecker, Jan 10 2004 Powder actuated anchor http://www.us.hilti...894&CATE_OID=-11700[kbecker]A timid suggestion for an improvement http://www.halfbake.../idea/post_20anchor [kbecker, Oct 04 2004, last modified Oct 21 2004] A timid suggestion for an improvement http://www.halfbake.../idea/post_20anchor [kbecker, Oct 04 2004, last modified Oct 05 2004] Can this technology be used against neighbor pets?+-- theircompetitor, Jan 10 2004 [UB] The NRA will love this; now there is even a reason to own rocket launchers, after all the fence is there to keep the government out so it should be covered by some amendment.
[TC] Just make sure they don't run away when the posts are coming in; or did you mean direct hits, that would require heat seeking fence posts.-- kbecker, Jan 10 2004 Sheep also deserve protection from the government. We all know what kind of people sometimes become senators.-- kbecker, Jan 10 2004 Good for repelling the Vampire armies.-- ldischler, Jan 10 2004 // I think you will find that it makes more of a crater than a fence post hole // - It's all in the fine tuning. You can use depleted uranium posts to make a fence with a real deep foundation along the Rockies. Of course in your backyard they could take out the neighborhood. For delicate operations the posts could have other means for braking a little like small parachutes.-- kbecker, Jan 11 2004 random, halfbakery