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Posted: Wed Mar 07, 2012 12:48 am
by jackssmirkingrevenge
If you can knock the ball valve open fast enough, should be fine, but don't expect to be able to aim it.
I would put a union + burst disk instead of the ball valve, much better performance.
Posted: Wed Mar 07, 2012 3:50 am
by cfb_rolley
Haha yeah I gathered it's not going to be accurate, just for a bit of fun since I don't have a cannon at the moment. That's a pretty good idea though. I already had the ball valve so at a later date I might cut it out and use that setup.
Posted: Wed Mar 07, 2012 10:20 am
by warhead052
ramses wrote:warhead052 wrote:Hey guys, I need a 2d 1:1 model of
this, the dimensions of it, for a machine shop. Can someone possibly convert the solidworks file to cad, and do a 2d version of it please? Thanks.
Attached. But any respecting machine shop could take the ... -DRAW.slddrw files and view them.
Thanks Ramses.
Posted: Thu Mar 08, 2012 3:24 pm
by wyz2285
I found a very easy way to make 6mm (airsoft bb caliber) lead balls, anybody wants a how to?
A picture of the lead bbs I made.
Posted: Thu Mar 08, 2012 3:32 pm
by warhead052
wyz2285 wrote:I found a very easy way to make 6mm (airsoft bb caliber) lead balls, anybody wants a how to?
A picture of the lead bbs I made.
Wow, those are perfect by the looks of it! Any idea on how heavy they are? And how did you make them?
Posted: Thu Mar 08, 2012 3:35 pm
by wyz2285
8g each, I made a ceramic mold to cast them.
Posted: Thu Mar 08, 2012 7:03 pm
by warhead052
Wow, 8g? I bet those hurt like a bitch when you get hit by them.
Posted: Thu Mar 08, 2012 7:06 pm
by Zeus
I don't think these will be used an airsoft match somehow.
If you'd care do post a more detailed method, please do.
Posted: Thu Mar 08, 2012 10:46 pm
by jackssmirkingrevenge
wyz2285 wrote:8g each
That doesn't sound right, 6mm lead balls should weigh around 1.28 grams/19.75 grains
Posted: Fri Mar 09, 2012 3:29 am
by wyz2285
Sorry, jack is probably right. I didn't got a chance to measure the weight, so I calculated it from mass density, witch would be +-12g/cm3, then I calculated the bbs size.
But still much heavier than airsoft bbs, I made them for my high power 6mms to get more power, and yes they won't be used in airsoft war.
Posted: Fri Mar 09, 2012 1:36 pm
by Brian the brain
So show us how to make them!!!
Posted: Fri Mar 09, 2012 1:56 pm
by wyz2285
I probably will make a video.
But it´s simple, I used 24h self-dry clay to make the mold, by using about 8 cm3 of clay with a bb inside, make sure it´s in the center of the cub., let it dry. when it´s almost dried, break it in half, then let it dry completely. So when you put them back to a cube, the join will be perfect. Drill a hole to the cavity, it´s done.
Posted: Fri Mar 09, 2012 6:31 pm
by Goats spudz
wyz2285 wrote:I probably will make a video.
But it´s simple, I used 24h self-dry clay to make the mold, by using about 8 cm3 of clay with a bb inside, make sure it´s in the center of the cub., let it dry. when it´s almost dried, break it in half, then let it dry completely. So when you put them back to a cube, the join will be perfect. Drill a hole to the cavity, it´s done.
or you could use 2 aluminium blocks and mill it for a bullet shape
Posted: Fri Mar 09, 2012 6:51 pm
by sharpshooter11000
If you use that method make sure you don't cut the block after making the mould. You'll end up with oval bullets!
Posted: Sat Mar 10, 2012 3:37 am
by Brian the brain
I wonder if I could use this:
http://link.marktplaats.nl/538474258
One barrel as the reservoir with a lathed valve inside and the other as the actual barrel...
Sorta like over under on it's side...
I never knew I could legally buy and own this in my country...eventhough it is decommisioned and just a collectable it's pretty cool.
You Americans probably don't know what I'm all exited about....