The length of the bow won't be compromised. I've put horn nocks on myself after making my bow. Here's what you'll need: Ducco Cement Glue or TiteBond II & a rasp file.
1. Decide which nock you want on the top and bottom lid.
2. Measure the depth of the nock.
3. Mark the depth on the limb.
Once all that is done, start to file the tip of the limb. You'll want to shape the tip so it fits into the nock snuggly. You don't want to have too much play between the limb and the nock. After you're done filing, place some glue into the nock. Then position the nock onto the limb. Let the glue dry for a few days. You'll need to store your bow laying flat. You can test the dryness of the glue by trying to wiggle the nock gently. If you feel it move, then it needs more time to dry.
I hope this helps.
Answered on 10/9/2012 by Anonymous