Hot-work tool steel 1.3397 with 0.6 wt% C, 3.9 wt% Cr, 2.0 wt% W and 1.9 % Mo was manufactured by using laser powder bed fusion (LPBF). Early study reported micro-cracks in the as-printed specimens [1], which is a common challenge to additive manufacturing of tool steels containing relatively high carbon. In this work, large cube and bar specimens were produced with the baseplate heated to 400 and 500 ℃ during LPBF to intercept the austenite/martensite transformation and prevent the brittle untempered martensite from forming during LPBF. The as-printed alloy was solution hardened and tempered. It was found that a dendritic/cellular structure with a mixture of untempered martensite and retained austenite was formed. A large number of cracks (~100 μm) were found in the top area of the as-printed 1.3397, due to the shrinkage of the material upon cooling after the printing process. Further approaches to reducing crack are suggested.