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Rock penetration into 3/4 inch furniture grade plywood (almost all the way) (Read 1851 times)

Mark-Harrop

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Rock penetration into 3/4 inch furniture grade plywood (almost all the way)
Feb 14^th, 2014 at 8:21am

Rock penetration into 3/4 inch furniture grade plywood…

http://rs441.pbsrc.com/albums/qq135/stopher1120/photo_zpsb68699c3.jpg~320x480
http://rs441.pbsrc.com/albums/qq135/stopher1120/photo1_zpse25fe775.jpg~320x480

The rock was an oblong piece of quarts about 2" long…

The sling was something I whipped up in 5 minutes on the shooting range from some paracord and a bandolier sling.

My students had seen me using one and wanted to know what it would go through. I tried my hardest, but just couldn't get it all the way through the plywood. That furniture grade stuff is pretty strong. Too bad I didn't have any lead…

Anyone who doubts a sling stone could easily penetrate a skull is crazy. Wink

Anyone who doubts lead will go in one side and out the other is crazier... Shocked

The throw was a strong fig-8 from about 20 feet.

My daughters can figure-8...

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Curious Aardvark Forum Moderation Offline Taller than the average Dwarf Posts: 13965 Midlands England Gender:	Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way) Reply #1 - Feb 14^th, 2014 at 12:38pm with an irregularly shaped rock that's a very good throw Find a nice dense round stone and try again - should go all the way through
Back to top	Do All things with Honour and Generosity: Regret Nothing, Envy None, Apologise Seldom and Bow your head to No One - works for me IP Logged

squirrelslinger Interfector Viris Spurii Offline peace through superior firepower Posts: 2870 Ky, USA Gender:	Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way) Reply #2 - Feb 14^th, 2014 at 5:34pm you call that illregular? I call that a good stone. Nicely done sir.
Back to top	“Insanity is doing the same thing, over and over again, but expecting different results.” "You don't think the electricity is off. You check it 3 times to make SURE its off" "Remember, this is not a scalpel. It is a steel wedge that you will be slamming into knotty wood. Hone accordingly." IP Logged

timpa Interfector Viris Spurii Offline Stones in the horizon Posts: 1515 Finland	Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way) Reply #3 - Feb 14^th, 2014 at 9:22pm Goliath is light stuff.
Back to top	I'll never practice; I only slinging. http://www.youtube.com/user/TimpaLinkosling/videos http://linko-sling.jimdo.com/ IP Logged

jlasud Interfector Viris Spurii Offline Programming stones Posts: 2358 Transilvania Gender:	Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way) Reply #4 - Feb 16^th, 2014 at 5:18am
Back to top	Respect existance or expect resistance! IP Logged

lobohunter Interfector Viris Spurii Offline where be a rock and a string there be a sling Posts: 1945 Cottage Grove or Gender:	Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way) Reply #5 - Mar 3^rd, 2014 at 7:33pm A shaker mill ball would have. Made lite work. Of that. But excellent. Show thanks
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squirrelslinger Interfector Viris Spurii Offline peace through superior firepower Posts: 2870 Ky, USA Gender:	Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way) Reply #6 - Mar 3^rd, 2014 at 8:20pm So would a lead glande.
Back to top	“Insanity is doing the same thing, over and over again, but expecting different results.” "You don't think the electricity is off. You check it 3 times to make SURE its off" "Remember, this is not a scalpel. It is a steel wedge that you will be slamming into knotty wood. Hone accordingly." IP Logged

Mark-Harrop

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Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way)
Reply #7 - Mar 13^th, 2014 at 2:27pm

Yea, slinging lead is scary fun…

That same day I picked up a handful of lead "splash" (whats left after you shoot a bullet at a steel target, flattened round disks of lead with sharp edges) and loaded them in the pouch.
They would zing off in all directions, but I managed to stick a number of them into the plywood like little lead shurikens.

Had a pic but can't find it… Embarrassed

My daughters can figure-8...

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squirrelslinger Interfector Viris Spurii Offline peace through superior firepower Posts: 2870 Ky, USA Gender:	Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way) Reply #8 - Mar 13^th, 2014 at 5:30pm Ok that is just awesome. Get yourself a couple of glans. Wood molds work super well.
Back to top	“Insanity is doing the same thing, over and over again, but expecting different results.” "You don't think the electricity is off. You check it 3 times to make SURE its off" "Remember, this is not a scalpel. It is a steel wedge that you will be slamming into knotty wood. Hone accordingly." IP Logged

Mark-Harrop

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Re: Rock penetration into 3/4 inch furniture grade plywood (almost all the way)
Reply #9 - Mar 14^th, 2014 at 1:07am

I've been using lead sinkers but have wanted to fool around with casting my own, just haven't gotten around to it.

I have a design for lead bionicals with little whistles in them, like on the Nerf Vortex…

Two different size whistles/pitches…because as we all know, the sound is a big part of the psychological effect.

CNC milling a 2 piece mold shouldn't be that hard either and it would be nice to be able to cast about 10 at a time.

My daughters can figure-8...

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