Bitzenburger fletching jig Nock-adaptor

UPDATE okt. 30 2025:

Added a updated 120°-version AND a 90°-version, as requested by hart_3831848
Seperate items!

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I learned that the original Bitzenburger Fletching jig, an old but excellent fletching jig that I purchased about 20 years ago, had a nock-receiving-part with less exact 120° markings. (*)

So I re-designed the original part with CAD- (fusion360) accuracy to be sure of exact measurements.

At this moment it only has the standard 120° 3-vanes indentations.
I might alter the design or make a new one for 

• 4 fletchings 90 degrees
• 4 fletchings 75 and 105 degrees

… if needed

!! unfortunatly supports will be needed!

I printed it in PETG and PC (carbon fiber), worked excellent. PLA might do fine too.

(*) new models of newly made jigs might no longer have this issue !?! Old ones do!