Maybe I'm totally misremembering but I'm pretty sure the guy in charge of weapon x was shocked when those claws popped out.
The adamantium bonding process would not passively make sharp claws.
I don't know, maybe Stinkles is right.
Since mutant powers are bullshit, it's possible that the bone claws were a secondary mutation.
The Weapon X program figured out how to shape adamantium, and they figured that a mutant with healing power might survive getting veins of adamantium laced through their bones (they discovered that it would certainly kill a human, 100% of the time). But the adamantium bonding process is essentially just a near-ultimate shield. For a weapon, they created near-ultimate laser-sharpened spring loaded knives, which could be implanted into the subject's forearms for concealment (activated by I dunno).
After years of Wolverine's healing factor trying and failing to reject the adamantium, Magneto ripped all of it out, and the healing factor decided that it missed having claws, so it grew a new set of bone claws where none existed before.
It could also be that the laser-sharpened adamantium claws were created prior to the adamantium bonding process, and then the bone claws were surgically removed and replaced with their adamantium replacements. This would be an invasive procedure, but apparently not quite as invasive as the adamantium bonding procedure which pumped liquid adamantium into Wolverine's bones.
I don't think the comics used either of these explanations. The bone claw retcon was just a mess.
IIRC, they specifically mentioned any number of times that Wolverine's claws were "laser sharpened", like the technique advertised for razor blades, just prior to the adamantium setting and becoming permanent, resulting in Wolverine's claws being razor blades that can never dull.
guys... it's a man who can survive being cut in half and we're wondering how he is able to cut metal in half?
i think we should be more worried about why wolverine doesn't create an army of him by cutting his body in half and letting it regenerate. he could populate the universe within a week. like... wouldn't that be your first goal?
Wolverine's healing factor is only active in one instance of Wolverine at any given time. If someone didn't stick the two pieces of Wolverine back together, the healing factor would pick one half of Wolverine to fully regenerate, and one half of Wolverine to die.
Which makes no sense considering that Deadpool is based on Wolverine's healing factor, and X-23 is a clone of Wolverine, but whatever. Comic books are bullshit. Wolverine bleeds all over things all the time, and yet he can regenerate his entire body from a single drop of blood.