Welcome, Guest. Please Login
SLINGING.ORG
 
Home Help Search Login


Pages: 1 2 
Send Topic Print
Concrete ammo (Read 9846 times)
Johnny
Funditor
****
Offline



Posts: 620
Goodlettsville,TN
Gender: male
Concrete ammo
Feb 10th, 2004 at 9:23pm
 
I ordered the egg shaped molds from Kraft and got them yesterday. Now I need to know if I need to mix up the concrete in a different way. Does it need to be thinner than normal. Will I have difficulty pouring it into the molds(the holes are a pretty small)? Any advice would help!
Thanks
Back to top
 

I also love sushi..!
TNslinger  
IP Logged
 
mgreenfield
Funditor
****
Offline



Posts: 509
Milwaukee Wisconsin
Gender: male
Re: Concrete ammo
Reply #1 - Feb 10th, 2004 at 9:41pm
 
Johnny, ....I got the jello egg molds, too, & molded up a set of plaster of paris eggs.   They weigh almost exactly 80grams each, which is a nice weight for me, tho a little light for the sturder lads who prefer 100-150gram ammo.  Getting the thick liquid plaster into the closed mold was hard & messy.   To do it again, I'd use a heavy-duty ziplock bag.   Fill it with plaster.   Clip a corner to make a nozzle & squeeze the bag to inject the plaster into the egg molds.   I greased the molds, too, but I'm not sure it helped a lot.   Finally, it's tuff to open the mold with the hardened eggs inside, so I dont know how many sets of eggs can be gotten out of one mold.     mgreenfield
Back to top
 
 
IP Logged
 
Johnny
Funditor
****
Offline



Posts: 620
Goodlettsville,TN
Gender: male
Re: Concrete ammo
Reply #2 - Feb 10th, 2004 at 9:46pm
 
Isn't Plaster of Paris a little brittle for sling ammo? I would think it would break up at the first impact. If not, I'll give it a try!
Back to top
 

I also love sushi..!
TNslinger  
IP Logged
 
Dan_Bollinger
Descens
***
Offline


Have Sling, Will Travel

Posts: 136
West Lafayette, Indiana, USA
Gender: male
Re: Concrete ammo
Reply #3 - Feb 10th, 2004 at 10:30pm
 
Johnny, I'd use sand mix. Cement and sand without the aggregate (stones). It will pour into a mold better. You can buy this premixed in a bag. Sometimes it is called patching concrete, too.
Back to top
 
 
IP Logged
 
Johnny
Funditor
****
Offline



Posts: 620
Goodlettsville,TN
Gender: male
Re: Concrete ammo
Reply #4 - Feb 10th, 2004 at 10:39pm
 
Do you think I can mix it and use the Ziplock bag technique(see above)? I know cement will make a hardy sling stone!
Thanks Dan
Back to top
 

I also love sushi..!
TNslinger  
IP Logged
 
Dan_Bollinger
Descens
***
Offline


Have Sling, Will Travel

Posts: 136
West Lafayette, Indiana, USA
Gender: male
Re: Concrete ammo
Reply #5 - Feb 11th, 2004 at 7:51am
 
I suppose you could if you added enough water.

If the molds are two parts, then why not fill each half of the egg and 'slap' them together before the concrete and fall out?

Or, go the other way. Use only enough water to make the mix sticky and roll a whole egg in your hand first, place in the mold, press together so the concrete takes the shape, and set aside to cure. Technically, the latter will make stronger concrete.
Back to top
 
 
IP Logged
 
Johnny
Funditor
****
Offline



Posts: 620
Goodlettsville,TN
Gender: male
Re: Concrete ammo
Reply #6 - Feb 11th, 2004 at 9:32am
 
Dan, I think I may try to "slap" the to trays together. That sounds like it may work! I'll give it a try.
Thanks
Back to top
 

I also love sushi..!
TNslinger  
IP Logged
 
JeffH
Senior Member
Past Moderator
****
Offline


Don't stand behind me,
I'm about to sling!

Posts: 354
Memphis, TN
Gender: male
Re: Concrete ammo
Reply #7 - Feb 11th, 2004 at 10:14am
 
Johnny,

Get the strongest concrete mix you can find.  High Early Strength should be printed on the bag.  This stuff hardens quicker and gets much stronger than the normal stuff. 

Additionally, get a grout bag.  This looks like a cake icing bag used to decorate cakes.  Mix the concrete as instructed.  If it looks a bit thick, add some water.  Then spoon it into the grout bag and fill the eggs.

Remember, no aggregate larger than sand, unless the concrete mix has fibers in it which would be good.

jeff <><
Back to top
 

So David triumphed over the Philistine with a sling and a stone. (1 Samuel 17:50)
 
IP Logged
 
Johnny
Funditor
****
Offline



Posts: 620
Goodlettsville,TN
Gender: male
Re: Concrete ammo
Reply #8 - Feb 11th, 2004 at 10:47am
 
I assume you can get all of this at Home Depot. I will try to get these stones made this weekend!
Back to top
 

I also love sushi..!
TNslinger  
IP Logged
 
JeffH
Senior Member
Past Moderator
****
Offline


Don't stand behind me,
I'm about to sling!

Posts: 354
Memphis, TN
Gender: male
Re: Concrete ammo
Reply #9 - Feb 11th, 2004 at 11:29am
 
Most of the stuff should be available at any large home store like Lowe's, etc.

You may have to make your own grout bag, though.  Any thing will do, like a zip-lok bag, as mentioned earlier.

Make sure you let the concrete harden sufficiently before throwing.  Even the high early strength stuff could take weeks to get to full strength.  So, be nice to the for a while.

jeff <><
Back to top
 

So David triumphed over the Philistine with a sling and a stone. (1 Samuel 17:50)
 
IP Logged
 
Johnny
Funditor
****
Offline



Posts: 620
Goodlettsville,TN
Gender: male
Re: Concrete ammo
Reply #10 - Feb 11th, 2004 at 12:30pm
 
Jeff, I see you're a Tennessee boy like myself!
I will let you guys know how things are going with this project. In the past, I have gathered nice round stones at a nearby creek, paint the things white, and retrieve them after my casts. I have shattered the top of a 5 gallon bucket at 75 yards. I can't hit it at every cast but come within 10 feet or so most of the time. I use the underhand cast with one quick rotation.
Back to top
 

I also love sushi..!
TNslinger  
IP Logged
 
David_T
Funditor
Past Moderator
****
Offline


Hooked on Sling'n

Posts: 756
Greenville,SC
Gender: male
Re: Concrete ammo
Reply #11 - Feb 11th, 2004 at 2:47pm
 
Johnny,

Yes, another great use of the empty 5 gallon bucket!
My son and I are on our third one. We use them for the head of "George the Roman" --one of our fasvorite slinging targets.
Back to top
 
 
IP Logged
 
Yurek
Funditor
Past Moderator
****
Offline


The best thing, is a good
sling.

Posts: 942
Poland
Gender: male
Re: Concrete ammo
Reply #12 - Feb 12th, 2004 at 2:57pm
 
I formed the sand-plaster "stones" by the hands. If you choose the proper ratio then no molds are needed. A few minutes and you have a few dozen quite nice projectiles. I wasn't going to recover them, they had to survive only one shot. Despite of it I randomly found two of them intact a few days later. I used rather more sand than plaster due to the cost (efficiency) and density. I used minimal amount of plaster needed to get a proper compactness. When they are wet, have density simllar to stones. Just another way of making ammo.

Jurek
Back to top
 

In the shape, structure and position of each stone, there is recorded a small piece of history. So, slinging them, we add a bit of our history to them.
 
IP Logged
 
Johnny
Funditor
****
Offline



Posts: 620
Goodlettsville,TN
Gender: male
Re: Concrete ammo
Reply #13 - Feb 12th, 2004 at 3:18pm
 
Yurek
What is sand plaster? Sand and plaster mixed together?
Thanks
Back to top
 

I also love sushi..!
TNslinger  
IP Logged
 
Yurek
Funditor
Past Moderator
****
Offline


The best thing, is a good
sling.

Posts: 942
Poland
Gender: male
Re: Concrete ammo
Reply #14 - Feb 12th, 2004 at 3:27pm
 
Quote:
Yurek
What is sand plaster? Sand and plaster mixed together?
Thanks


Exactly, that's it. Excuse my inequivalence.

Jurek
Back to top
 

In the shape, structure and position of each stone, there is recorded a small piece of history. So, slinging them, we add a bit of our history to them.
 
IP Logged
 
Pages: 1 2 
Send Topic Print
(Moderators: Chris, Bill Skinner, Curious Aardvark, Masiakasaurus, Mauro Fiorentini, David Morningstar, Rat Man) - (Moderator Group: Forum Moderator)