[Question] Why some rods have traits and others don't?

[ffuentesm]

I am curious as to why some material rods have traits and can be used in tool crafting, while others don't, and need the rod blueprint to work.
Like: Bamboo, Iron, Blaze

Meanwhile, something like a Lead rod needs to be a "rod part" to gain the tool properties

[DaddyLongspoon]

if you look at your screenshots the first two items are from Minecraft, Silent gear has added the tool rod attribute to these. (breeze rod presumably on its way at some point). the third screenshot is an item added by immersive engineering, that mod has added silent gear support to its iron rod. but the fourth rod is added by allTheOres mod, that mods' authors have not added silent gear tool rod tag to this lead rod item, despite that they have added #sGear tag to the ingot. So hopefully you see, silent gear has api that other mod authors can implement, but not all of them do. hope that helps, I don't see how Mr Chaos can add stuff to the allTheOres mod, he is not (as far as I know) a part of ATM team.

[ffuentesm]

Really?
Because other Rods in IE are not compatible, even though they have the base material.

Also, the iron Rod from AlltheOres also has the base rod trait without needing to be turned into a rod part.