Digital manufacturing and today's bowhunters

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Digital manufacturing and today's bowhunters

Postby DIYguy » Wed Mar 23, 2016 9:49 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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Re: Digital manufacturing and today's bowhunters

Postby henried » Thu Mar 24, 2016 7:33 am

Very nice.
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Re: Digital manufacturing and today's bowhunters

Postby DIYguy » Thu Mar 24, 2016 3:51 pm

Back to the drawing board.

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: Digital manufacturing and today's bowhunters

Postby Thunderhead » Tue Mar 29, 2016 4:27 pm

That is very interesting always wanted to use a 3d printer. Is it expensive to use and how difficult is it to operate?
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Re: Digital manufacturing and today's bowhunters

Postby DIYguy » Mon Apr 04, 2016 3:30 pm

I bought the printer and 13 spools of filament on ebay for $1200. You will need a 3d CAD design software to create the 3D models that you will send to the printer.
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Re: Digital manufacturing and today's bowhunters

Postby DIYguy » Tue Apr 05, 2016 3:13 pm

Who doesn't love Altoids? Now there is even more to love about that Original Celebrated, Curiously Strong mint. Thanks to Altoids you can congregate every single local deer on your hunting land to one location. All you need to do is eat all the Altoids first to empty the tin (That's a treat right there)

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Then print up a way to congregate all those deer in one location. I used a 3D printer.

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I made the insert to hold the cards at an angle so the lid just makes contact with all 18 cards so they don't rattle.

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I used to use two tins (1 for empty cards and the other for cards I just pulled) so I would not mix them up. Now I have a row for empty cards and a row for full cards.

If you are in bear country like me, make sure to do a good job of washing out the tin so your cards don't smell like the candy.
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Re: Digital manufacturing and today's bowhunters

Postby MMP » Tue Apr 05, 2016 3:18 pm

Thats a great idea, being an amatuer photographer myself I have many SD cards laying around in my camera bag.
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Re: Digital manufacturing and today's bowhunters

Postby Thunderhead » Tue Apr 12, 2016 6:40 am

That looks real neat. How much of a roll of filament would you use to make something like that?
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Re: Digital manufacturing and today's bowhunters

Postby DIYguy » Tue Apr 12, 2016 2:20 pm

I would not know. I would have to weigh a spool, make apart and then weigh the spool again.
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Re: Digital manufacturing and today's bowhunters

Postby DIYguy » Tue Apr 19, 2016 2:23 pm

More AAF (annular Airfoil Fletch) testing of the 3D printed arrow fletching. This time at 80 and 90 yards. 90 yards is really a poke for my ability as I don't practice or hunt at that distance and don't have a pin for 90.

https://www.youtube.com/watch?v=BDlNQgND49A
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