Crossbow Building Wiki
Advertisement

Introduction[]

This page describes a simple way to reinforce the nocks of bows made from loose laminates with metal inserts. The inserts serve two purposes:

  • Reduce bowstring wear by making the nocks wider (for all laminate materials)
  • Help prevent bowstring from splitting the laminates (for wood laminates)

Performance-vise the best material would be aluminum, but thin steel works as well.

Step by step instructions[]

Start by cutting at least two rectangular pieces from a sheet metal and mark the center:

Making metal nock reinforcement - 01.jpg

The pieces should be slightly wider than the laminate, and sufficiently long so that they can be folded over the laminate length-vise without issues.

Next punch a longish hole in the middle, e.g. with a hammer and a screwdriver:

Making metal nock reinforcement - 02.jpg

Attach the piece to a vise:

Making metal nock reinforcement - 03.jpg

File away the sharp edges:

Making metal nock reinforcement - 04.jpg

File the edges of the hole square and enlarge the hole as necessary, until it fits neatly over nock filed to the laminate:

Making metal nock reinforcement - 05.jpg

Making metal nock reinforcement - 06.jpg

Next bend the piece along the longitunal axis with pliers and fit it over the nock:

Making metal nock reinforcement - 07.jpg

Next use a small hammer or pliers to squeeze the nock insert flat against the laminate:

Making metal nock reinforcement - 08.jpg

Making metal nock reinforcement - 09.jpg

If you want, you can file away the protruding parts of the inserts to save some weight.

Advertisement