This work has two primary objectives: (1) Evaluate the surface stability of DSW materials and compare with the results of identical discharge parameters (MP 2024-25-02) under high temperature using heated DiMES. (2) Further characterize preferential erosion of DSW in-situ using WiSE. The first DiMES probe will be used to accomplish Objective (1). A heated 7-button holder will be used with a combination of flush and angled buttons. The subsequent single angled holders will be used towards Objective (2). The main variable for the first DiMES head is temperature, while the subsequent discharges will be used for in-situ erosion analysis. Following the exposure of the 7-button heated holder, two separate large angled disks will be exposed to two discharges each. Each discharge in this experiment will be an identical discharge to the initial. Prior to and post exposure, all samples will be polished to a mirror f inish and analyzed via energy dispersive spectroscopy (EDS) for composition. Fiducial markers will be made on one of each DSW sample prior to exposure in DIII-D using a focused ion beam (FIB) to define a region of interest on the sample surface that can be referenced after exposures. The areal density of carbide dispersoids will be counted prior to the samples being sent to DIII-D and confirmed with EDS.