Most visitors online was 1660 , on 12 Dec 2020
Without having your anchor assembly in hand, I can not tell you if its a candidate for knurling or not. I would suggest Willie`s, "tap it on tighter " first.
Personally, I prefer knurling to recreate a friction fit where required for several reasons. First, if you have versatile equipment its a quick and simple procedure where the size and location of the knurl can be predetermined. In addition, it covers the complete circumference of the work piece avoiding runout issues etc. One can also create what ever friction tension is required by the depth of the knurl to avoid cracking of assembles if to tight..
(1) The OD of a work piece can be knurled as illustrated in the first photo. In this case support would be required, thus the end of the arbor is riding in a brass bushing and supported by the tailstock.
(2) A small diameter hole such as some horological wheels and other parts can also be knurled in the ID.
In doing this I use a dental bur and fit two micro ball bearings on the arbor per second photo.
(3) The assembly in this case is mounted in a #78 WW collet in a tool post collet holder per third photo. Again in this case the bur is positioned inside the ID of the wheel and rotates as it makes contact with the ID.
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LloydWhere did you get that OD knurler