To remove the glass, we first took off the reveal moldings. The moldings are delicate, and we've seen a lot of them trashed by trying to remove them with screwdrivers or claw hammers. There are a few specialized tools available that make molding removal easy, the most common being the "arrow-style" hook (middle). We ran this tool under the molding at a 45-degree angle until a clip was contacted. Then, one of the pointed ends was hooked behind the clip, and the tool was rotated to release it. The scissors-style tool we used grips the clip from both sides and releases it without trauma. Sometimes the reveal molding is bonded by excess sealant, making removal difficult. To avoid destroying the molding, spray 3M release agent under the moldings to help loosen the sealant's grip.