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Loving this digital manufacturing for bowhunting

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Loving this digital manufacturing for bowhunting

Postby DIY_guy » Wed Mar 23, 2016 1:40 pm

The brown truck dropped off a 3D printer for archery and bowhunting related prototyping. (and for generally playing around)

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As well as a variety of ridged and flexible filament to proto design concepts.

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First up is prototyping a broadhead for an upcoming bear hunt.

[video=youtube;ENFQUgQgb9g]https://www.youtube.com/watch?v=ENFQUgQgb9g[/video]

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We are playing around with the 3D printer making prototypes of things we have been wanting to make or improve upon.

First up is a vision of an improved version of an existing product to replace fletching. FOB's are a good product that can be made better. Not necessarily for sale but for personal use, education and enjoyment. I made the ring a bit smaller but the fins a bit bigger.

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It weighs slightly less than the FOB brand

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clearance from a drop away will be a bit better with this version.

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They have a 4 degree offset but I want 7 but may increase that further. FOB's fins are flat. I made this with a curve or radius like an airplane wing to see if that will improve flight. (Again, experimenting)

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Time to make a few more and test shoot them.

After test firing them they still hit my face. We are getting closer but time to improve further.

1. Improved rest clearance.
2. Reduced face contact.
3. Reduced weight. (less than existing FOB and closer to 3 Blazers/glue)
4. Increased spin rate.
5. Increase total surface area of fins.
6. Airfoil fins rather than flat.

By making the annular ring smaller and pushing it forward 3/4", the facial contact issue improves as does rest clearance. I prototyped an early version yesterday but went back to the drawing board today.

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Next up is a call for the stupid, smelly field carp.

I printed the pot for the call. One in black and another in Black and red and designed in some text just for giggles.

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Then made aluminum sound boards

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Aluminum and cooper

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and a sliding top for the striker to change the tone.

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Just waiting for the epoxy to cure to test them for sound.

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A 3D printed shelf with hooks we made for hub style blinds.

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Adding some hooks and shrink tube.

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To quiet the shelf an old mouse pad and double sided tape was used.

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Perfect fit.

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Plenty of room on the shelf and to hang things.

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The joy is in the planing and doing.
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Re: Loving this digital manufacturing for bowhunting

Postby jeffhalfrack » Wed Mar 23, 2016 8:15 pm

It. Sure is something. To. See what. You. Guys. Can. Do. With one on those. And some. Weed eater. String,,nice. Work. I love your posts Really. Like that broad head jig you made It. Would. Be cool to have a. Nearly. Endless supply of broad heads. Keep it. Coming. Jeff w
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Re: Loving this digital manufacturing for bowhunting

Postby DIY_guy » Thu Mar 24, 2016 7:40 am

I offer the broadhead sharpening guide on our website innovativeoutdoorsmanllc.com
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Re: Loving this digital manufacturing for bowhunting

Postby DIY_guy » Thu Mar 24, 2016 7:41 am

Back to the drawing board.

Existing FOB's weigh 24.5 grains. Our early prototype of a modified annular airfoil fletch was 23 grains but like everybody else we dislike weight on the rear end of the arrow so we took out weight in no-stress areas and got the weight down to a (calculated) 20 grains (the weight of 3 blazers with glue). We won't know for certain until we make a few and throw them on the scale. Here is what they will look like now.

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Re: Loving this digital manufacturing for bowhunting

Postby owlbait » Thu Mar 24, 2016 12:21 pm

That shelf for the blind is a winner! How does a plastic broadhead prototype move into metal production?
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Re: Loving this digital manufacturing for bowhunting

Postby DIY_guy » Thu Mar 24, 2016 4:48 pm

By hand. I designed the BH and then proto'd it in plastic so I could get a better feel for the size and shape and them made the BH from a circ saw blade and a filed tip but I continue to ponder how I want to make the actual head for my upcoming bear hunt.
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Re: Loving this digital manufacturing for bowhunting

Postby DIY_guy » Thu Mar 24, 2016 5:28 pm

I printed the latest version. I dont know that my scale is sensitive enough to capture the weight reduction. The calculated weight should have had this thing at 20 grains.

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Before any more design changes are made test shooting needs to be completed.

But................... Not today.

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Re: Loving this digital manufacturing for bowhunting

Postby rwsbow » Fri Mar 25, 2016 10:27 am

If you change the "ring" to an airfoil chamber, it will allow the rear end of the arrow to "lift it's own weight", thereby negating the actual weight of the unit...just a suggestion...
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Re: Loving this digital manufacturing for bowhunting

Postby DIY_guy » Fri Mar 25, 2016 11:01 am

The joy is in the planing and doing.
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Re: Loving this digital manufacturing for bowhunting

Postby rwsbow » Fri Mar 25, 2016 1:30 pm

Yup...reminiscent of the Flying Ring and Pope's Hat paper airplanes....you can still keep the angled "vanes" inside to impart spin...simply taper the "ring" from the front to the back to create an airfoil....good luck...
The reason I support the 2nd Amendment is because I'm too young to die but too old for an ass whoopin' ! 


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