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Abstract Ammo Design 2021! (Read 16974 times)
TOMBELAINE
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Slinging Rocks!

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Re: Abstract Ammo Design 2021!
Reply #30 - Apr 4th, 2021 at 5:47am
 
Slingstones for Easter Holiday.
Abundant and cheap.
The eggs of Easter  Cheesy

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Morphy
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Re: Abstract Ammo Design 2021!
Reply #31 - Apr 4th, 2021 at 9:55am
 
I like it! Death by chocolate is something I can get behind.
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IronGoober
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...and now, No. 1, the
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Re: Abstract Ammo Design 2021!
Reply #32 - Apr 4th, 2021 at 5:25pm
 
Here is my entry. This is the sling judo point. It is designed so that when the front point hits a target, wires pop out of the sides and catch on the ground/grasss to make it easier to retrieve.

The design could be built relatively easily on a lathe/mill, but this is 3D printed. 25mm radius, aspect ratio 1.5. I calculated that a 20mm radius and 1.5 aspect ratio would be ~50g if printed fully dense. I'll probably try that next. This version seems to work ok, the wires pop out as intended.

The OpenSCAD is available and is parametric. If you want to change the size or aspect ratio, the two parameters at the top will do it.
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John R.
 
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joe_meadmaker
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Re: Abstract Ammo Design 2021!
Reply #33 - Apr 4th, 2021 at 6:41pm
 
That's pretty cool man!

Any test results yet?† Or is this more of a theoretical model?
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IronGoober
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...and now, No. 1, the
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Re: Abstract Ammo Design 2021!
Reply #34 - Apr 4th, 2021 at 6:58pm
 
It's a prototype to test functionality of the mechanism. It worked (video1). Unfortunately, further testing is postponed until a denser version can be printed. See video 2.

Plastic isn't the best choice for sling projectiles. Or at least 3D printed plastic that isn't flexible.
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Mersa
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Re: Abstract Ammo Design 2021!
Reply #35 - Apr 4th, 2021 at 8:42pm
 
So awesome IG !!!
Canít wait to see this evolve
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Morphy
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Re: Abstract Ammo Design 2021!
Reply #36 - Apr 4th, 2021 at 9:14pm
 
That is truly amazing IG. I canít believe this all stemmed from one late night conversation. The fact that you put in that much thought and work is mind blowing to me. Like Mersa I canít wait to see how this evolves.
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xud9a - call me zud 👍
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Re: Abstract Ammo Design 2021!
Reply #37 - Apr 4th, 2021 at 9:50pm
 
Yet more inspiring  material.

Thank you

Zud Smiley
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Mersa
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Re: Abstract Ammo Design 2021!
Reply #38 - Apr 4th, 2021 at 11:12pm
 
Obviously itís a few blades away from an expandable razor glande
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Razor glandes, Aim for the eyes!!!
 
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Morphy
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Re: Abstract Ammo Design 2021!
Reply #39 - Apr 5th, 2021 at 12:10am
 
Mersa wrote on Apr 4th, 2021 at 11:12pm:
Obviously itís a few blades away from an expandable razor glande


The highest form any glande can achieve.
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Duckhands
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Re: Abstract Ammo Design 2021!
Reply #40 - Apr 5th, 2021 at 1:23am
 
Morphy wrote on Apr 5th, 2021 at 12:10am:
Mersa wrote on Apr 4th, 2021 at 11:12pm:
Obviously itís a few blades away from an expandable razor glande


The highest form any glande can achieve.

Just wait until I take a few minutes in my 3d software Grin
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Hands dirty from throwing dead ducks I eat my lunch and earn my title.
 
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Morphy
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Re: Abstract Ammo Design 2021!
Reply #41 - Apr 5th, 2021 at 12:36pm
 
Duckhands wrote on Apr 5th, 2021 at 1:23am:
Morphy wrote on Apr 5th, 2021 at 12:10am:
Mersa wrote on Apr 4th, 2021 at 11:12pm:
Obviously itís a few blades away from an expandable razor glande


The highest form any glande can achieve.

Just wait until I take a few minutes in my 3d software Grin


Such a thing cannot just be put out there. How does one improve upon perfection? Is there a "razorer glande" we are not aware of yet? Are you in possession of ancient Turkish texts?
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Re: Abstract Ammo Design 2021!
Reply #42 - Apr 5th, 2021 at 4:36pm
 
Morphy wrote on Apr 5th, 2021 at 12:36pm:
Duckhands wrote on Apr 5th, 2021 at 1:23am:
Morphy wrote on Apr 5th, 2021 at 12:10am:
Mersa wrote on Apr 4th, 2021 at 11:12pm:
Obviously itís a few blades away from an expandable razor glande


The highest form any glande can achieve.

Just wait until I take a few minutes in my 3d software Grin


Such a thing cannot just be put out there. How does one improve upon perfection? Is there a "razorer glande" we are not aware of yet? Are you in possession of ancient Turkish texts?

Hahaha, I might just. I am excited to start modeling up some prototypes. I haven't touched my 3d software in a while. I might bust out my flyswatter dart model and alter it into a glandy... if you get what I'm saying lol
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« Last Edit: Apr 5th, 2021 at 6:21pm by Duckhands »  

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Curious Aardvark
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Re: Abstract Ammo Design 2021!
Reply #43 - Apr 5th, 2021 at 5:16pm
 
well the fans aren't quite that squishy any more.
And they are pretty rigid vertically - basically you need a hammer to squash them vertically.

tried a few things and ended up with a 0.8mm outer wall, three blades (I actually printed a whole bunch of 4 blade fans - but, umm, all left handed spin - yeah it was one of those days lol) at 40 degree pitch.

It just looks right - and that's the core principle of the scientific method, isn't it whistle

I could† create a sharper angle - but i'd also need to increase the wall thickness. And that would reduce air flow.

The hole through the glande starts out with an 12mm x 8mm socket for the fan, then gradually narrows to an 8mm aperture at the back.

How is that hole done ?
Well, magic - obviously Smiley

So anyway here's the first couple.

These are 30x60mm Jet glandes with a couple solid ones for comparison.
It's my favourite size.

And yes, that's the official name:
Jet Glandes

I'll give them a couple days gentle drying and then check weights and dimensions.
This is really firm clay - so you don't get much shrinkage.

I also suspect they'll whistle. There's a definite noise when you blow through them.
A simple lead glande makes a noise like a swarm of bees. I suspect these will be louder.

I have no idea where I'll test them.
I'll probably use my short edc sling. The best place I have to sling and see where a glande lands is only 500 metres from a road. (lol 'only')
But it's all down hill so you have a perfect view of whether there's anyone around.

Like I said I'll give them a couple days to harden.
And that folks is entry number 1.

And if you're wondering about the last picture. There is just something wholly satisfying about making really tiny things that come out without needing any post processing.
Each one takes approximately 3.5 minutes to make and uses 0.3 gms of flexible polyurethane.
For the really observant - the little bumps in the wall of the box contain magnets so i can stick the box to any magnet friendly surface.

The second entry requires me to video stuff and that always takes more time Smiley
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Do All things with Honour and Generosity: Regret Nothing, Envy None, Apologise Seldom and Bow your head to No One †- works for me Smiley
 
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Re: Abstract Ammo Design 2021!
Reply #44 - Apr 5th, 2021 at 6:22pm
 
Those are looking pretty sick CA. I was planning something similar as well for one of my ideas.
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Hands dirty from throwing dead ducks I eat my lunch and earn my title.
 
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