MadModder

The Craftmans Shop => Backyard Ballistics => Topic started by: Joules on July 16, 2018, 08:06:55 AM

Title: Archery, a new twist for me.
Post by: Joules on July 16, 2018, 08:06:55 AM
How things work out....   Based on the work I did with the 3D printed marine propellers I have been asked to design a 3D printed fletching jig that can apply feathers with a helical twist to arrows.  First job is modelling the arrows and feathers and see from there.   The other problem for me was finding common language for the terms used in archery, as opposed to straight and offset fletching etc etc.  For me 1 turn per XX inches I can work with, the 1 in 18.5" is just under the 3 degree limit for spin and drag that seems to be the "do not exceed"   Ahhh another journey begins, 3-4 feather fletching and staggering to try, not even sure I have the feathers orientated correctly yet.
Title: Re: Archery, a new twist for me.
Post by: PK on July 16, 2018, 06:51:14 PM
I had a shed buddy that was into diy archery. He made all sorts of interesting widgets.
I can recall
I was surprised how much application for the model engineer and their tools there is in the hobby...
Title: Re: Archery, a new twist for me.
Post by: Joules on July 21, 2018, 07:18:49 AM
Had my mate round for a show and tell on his new bow.  Wow, so much engineering...  I shot a fibreglass recurve bow and fibreglass arrows in my early twenties.  This was a veritable engineering feast for the eyes along with the high tech carbon alloy composite arrows.   As PK mentions, lots of scope for the engineers workshop and 3D printing.  We spent a good few hours talking and watching YouTube vids on archery, a note book of doodles to follow up on now.