Read this Monster Hunter World: Iceborne guide on how to get Razor Sharp Charm!
How To Get Razor Sharp Charm
Procedure: 6 Steps To Get Razor Sharp Charm
|1||Finish M★4 Assigned Quest "The Disintegrating Blade"|
|2||Talk to Housekeeper|
|3||Finish M★3 Optional Quest "The Purr-fect Room:Stone"|
|4||Talk to Housekeeper|
|5||Finish M★4 Optional Quest "The Purr-fect Room: Light Iron"|
|6||Talk to Housekeeper and get Razor Sharp Charm|
Talk To Housekeeper
After finishing "The Disintegrating Blade" and "The Purr-fect Room:Stone", talk to housekeeper and unlock new quest. There should be yellow "!" icon if you meet all the requirements.
After finishing "The Purr-fect Room: Light Iron", talk to the housekeeper and get Razor Sharp Charm. The charm will automatically go into item box and you don't need to forge it.