Behind Bespoke Tailoring - I was very happy to receive the chalk sharpener that I order from @mundustna this past week! I have to say that the stiff blades caught me off-guard.
TAILOR CHALK SHARPENER 40190 | eBay
Amazon.com: Dritz Holder with Sharpener, White Tailor's Chalk, 1 Count (Pack of 1)