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small calabur hot glue penitration slugs

A place to ask general spud cannon related questions.
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is it reasonable to make these rounds

yes it will work
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small calabur hot glue penitration slugs

Unread postAuthor: dart guy » Thu Jun 13, 2013 7:58 am

i think that if you melt alot of hot glue into the shape of a projectile that is desirable an example is by cooling hot glue in a form while an object is in the center like nails,bbs,bearings,razors, smaller bullet, glass, exetera...
(please follow the no pyro rule)
i think that if this is done you can acive higher powers with smaller obgects basicaly a specitaly round for in a cartige fire canon
please post back fillings and outer round ideas
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Unread postAuthor: wyz2285 » Thu Jun 13, 2013 8:11 am

Wax is cheaper and easier to use
[youtube]http://www.youtube.com/watch?v=cyNIABWS8vs[/youtube]
also
[youtube]http://www.youtube.com/watch?v=nmzewCbjysg[/youtube]
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: dart guy » Thu Jun 13, 2013 8:47 am

sorry for some confusion i mean a shot in which the hot glue is the bullet and ther is a centered obgect like the glue breaks off in impact to a stronger surface and then the strong center continues through
i mean an example of glue hits glass then nail contunues thuogh while hot glue rmains behind after weakening blow.
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Unread postAuthor: wyz2285 » Thu Jun 13, 2013 8:56 am

Still the same concept as the videos demonstrate :roll:
You wanted to make a sabot using hot glue, in the videos we used wax witch is cheaper and doesn't stick to the mold.
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: dart guy » Wed Jul 17, 2013 10:03 pm

ok i now know what i mean i mean a bullet almost a boat tail with a hard core more or less a armor penatrating bullet
which is not a sabot!!!!

sorry was nessasary and also i hold a gruge sorry i was un able to load pics origionaly but if you need a pic i will gladly post it
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Unread postAuthor: Zeus » Wed Jul 17, 2013 10:17 pm

Bro, there's two types of sabot, discarding (what you're thinking of), and non-discarding.
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/sarcasm, /hyperbole
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Unread postAuthor: ToasT » Wed Jul 17, 2013 11:18 pm

First a question.

Is the hot-glue to act as a seal/burst disc substitute for a cartridge? aka, you have your propellant and projectile in one, like traditional firearm ammunition.

On other reasons why you might do this.

From my intuition, the bonus of having it non-discarding would be to add momentum to the projectile, meaning it hits the target harder.
However, hot glue is light.
The momentum gain is most likely less than the decrease that is created by its increased drag.

Another bonus, (if the core was of an unstable design), would be to add stability to the penetrator by imparting spin from barrel rifling (if material properties are suitable). I would assume your barrel is smooth, so this would reason would be nullified also.

So I guess its do-able, but most likely wont improve the power. A discarding sabot pared with a balanced projectile (APSD/APFSDS) will achieve best results
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Unread postAuthor: dart guy » Thu Jul 18, 2013 10:47 am

i am planing using this for a like 1/2 inch rifles copper barrel and im not sure if lead vs copper is a good idea and a little wasefuland im not sure if tape would work as well and wax is super feeble i want it kinda like a regular bullet im laning on using a heavy core like steel or lead (probably a 270 bullet)Image
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Unread postAuthor: mr.potatohead » Thu Jul 18, 2013 11:57 am

im gunna have to make some
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Unread postAuthor: dewey-1 » Thu Jul 18, 2013 12:14 pm

So you are saying the blue is the discarding sabot and the black is the projectile?

If the black is the projectile it is not flight stable!
You need to research CG vs CP for flight stability.

JSR has numerous pictures available for fin/drag stabilized projectiles.
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Unread postAuthor: dart guy » Thu Jul 18, 2013 1:48 pm

no the blue is hot glue in a solid shell and the center is the penatratior core
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Unread postAuthor: dewey-1 » Thu Jul 18, 2013 2:05 pm

So how do you plan for flight stability?
It has to be done with barrel rifling or drag/fin stabilization!

Read this, it may help.
http://exploration.grc.nasa.gov/educati ... tstab.html
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Unread postAuthor: Blitz » Thu Jul 18, 2013 3:02 pm

Or, weighing down the nose to force the center of gravity ahead of the center of pressure.
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Unread postAuthor: Technician1002 » Thu Jul 18, 2013 5:39 pm

I know that full soda cans are stable falling on their side.. :D

I think they would go further if they went end first.
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Unread postAuthor: dart guy » Thu Jul 18, 2013 5:46 pm

Ok that was a crappy plan. When i make one of these then i will try to create it with the propper theroys including areo dynamicy and wheight balancing.
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