Unfortunately, I don't think tru-angle hones are made anymore, but you can still find them on the big auction site occasionally. I forgot one step in my process. After beveling the tip to match the rest of the blade, I true up the main blade bevel with a tru-angle file block before going to the hones. The file block treatment would probably be sharp enough, but the hones polish the blade. I've also seen a leather tru-angle strop to give the blade the final touch, but I don't own one of those.
If you can't find the hones, you can get Zwickeys just about as sharp with a file and ceramic stick. Folks have been doing that for more than 50 years.