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PUBLIC LAND BOWHUNTERS
Welcome to the PUBLIC LAND BOWHUNTERS forum.

On behalf of public land bowhunters, throughout our great nation, I work on this forum almost daily. I am striving to make this forum the very best all public land, bowhunting forum on the internet.

Look around, see if THIS FORUM is something YOU want to be a part of. Registration is fast, simple, and absolutely free, so join our forum today! All the best.-
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Digital manufacturing and today's bowhunters

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Digital manufacturing and today's bowhunters Empty Digital manufacturing and today's bowhunters

Post by DIY_guy Wed Mar 23, 2016 4:44 pm

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

Digital manufacturing and today's bowhunters IMG_3118_zpsek0o14ch

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

Digital manufacturing and today's bowhunters IMG_3127_zps6ktthe3f

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

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

Digital manufacturing and today's bowhunters IMG_3152_zpsbrelxatq

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.

Digital manufacturing and today's bowhunters Ring2_zps28pbiocb

It weighs slightly less than the FOB brand

Digital manufacturing and today's bowhunters Ring1_zpsfnfxt87d

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

Digital manufacturing and today's bowhunters Ring3_zpsemz4h6po

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)

Digital manufacturing and today's bowhunters Ring4_zpsetcpnjm0
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.

Digital manufacturing and today's bowhunters Annular%20airfoil%20fletch_zpscfw1669o

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.

Digital manufacturing and today's bowhunters Calls1_zpsibfmhphb

Then made aluminum sound boards

Digital manufacturing and today's bowhunters Calls2_zpsqrysl2mk

Aluminum and cooper

Digital manufacturing and today's bowhunters Calls3_zpsz7dnzdfk

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

Digital manufacturing and today's bowhunters Calls4_zpszan3zbwh

Digital manufacturing and today's bowhunters Calls5_zpsbsarurhe

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

Digital manufacturing and today's bowhunters Calls6_zpsri5rzqsi

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

Digital manufacturing and today's bowhunters Shelfb_zpse1075609

Adding some hooks and shrink tube.

Digital manufacturing and today's bowhunters Shelfa_zpsa523612b

Digital manufacturing and today's bowhunters Shelfc_zpsd97fa214

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

Digital manufacturing and today's bowhunters Shelfd_zpsf26045d2

Digital manufacturing and today's bowhunters Shelfe_zpsb1a44408

Perfect fit.

Digital manufacturing and today's bowhunters Shelff_zps70c9a6c3

Plenty of room on the shelf and to hang things.

Digital manufacturing and today's bowhunters Shelfg_zpsbac1a32b

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Post by DIY_guy Thu Mar 24, 2016 10:44 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.

Digital manufacturing and today's bowhunters Annular%20airfoil%20revised_zpsjsmepj7j

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Post by Waiting4Fall Thu Mar 24, 2016 8:39 pm

I'm very impressed!!! That's great stuff!
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Post by DIY_guy Mon Apr 18, 2016 11:48 am

We have a family friend that has a degenerative disorder that has resulted in her having to spend the bulk of her time in a motorized wheel chair. She is able to get out of it only to use the restroom. She can use the chair to get upright and then use a walker to transfer herself to the toilet. Sadly she is unable to bend over to reach the foot pads to swing them up and out of the way. She asked if we could design her an aid to allow her to reach the foot pads to lift them out of the way. Right now she must have a family member at home with her to lift the foot pads for her.

The criteria were that the aid has to have a large handle so she could grip it, it has to reach 24” but be able to be compressed into a smaller footprint to allow it to be stored in a bag attached to the chair and it had to be light weight. We began the project Friday night and completed it on Sunday morning so we were able to turn it around in less than 48 hours.

We were happy to help and to find another use for the 3D printer and to allow her to regain more independence. The final product weighed only 13 Oz.

Digital manufacturing and today's bowhunters Hendricks%20handle%206_zps4mwlch4e

Digital manufacturing and today's bowhunters Hendricks_handle_zpsz8olzlbu

Digital manufacturing and today's bowhunters Hendricks%20handle%201_zpsp7enstxo

Digital manufacturing and today's bowhunters Hendricks%20handle%202_zpszzn1grju

Digital manufacturing and today's bowhunters Hendricks%20handle%203_zpsa8whvkus

Digital manufacturing and today's bowhunters Hendricks%20handle%204_zps9whmu4kc

Digital manufacturing and today's bowhunters Hendricks%20hook5_zpssocxx2nr

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Post by DIY_guy Mon Apr 18, 2016 11:49 am

A little long distance testing of the AAF (annular Airfoil Fletch)


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Post by DIY_guy Tue Apr 19, 2016 9:20 am

More AAF testing This time at 80 and 90  yards. 90 yards is really a poke for our ability as we don't practice or hunt at that distance and don't have a pin for 90.


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Post by DIY_guy Thu Jun 02, 2016 8:48 pm

Now dressing AA batteries in C sized outfits so they can be used in trail cams that take C batteries.

Digital manufacturing and today's bowhunters IMG_3518_zps7nbwdx4q

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