Hi Lucy et al, We have been using a UV water soluble mask formulated for us by Techspray for 3+ years with much success. The material is blue in color and dispenses well by machine. The material is cured in an in-line UVEX uv oven. You might check with them as a start. best regards, Russ Vertefeuille Sr. Project Eng. Honeywell, BCAS Glendale, AZ ---------- From: [log in to unmask] To: [log in to unmask] Subject: Re: [TN] ASM: Water Soluble Mask