Poplar Saya for Shun Kiritsuke 29 November 2017 by Colton 2 Comments This Poplar saya is for a Shun Kiritsuke 8 inch. I was playing around with thicknesses on this saya to dial in exactly how thick will give good protection but not look too bulky. This is an example of the Poplar sayas I will be offering for sale. This is before thinning out the walls with a hand plane. Before applying boiled linseed oil finish.