X****Liu
                                
                            
                                How about removing solder mask from PCB?
                            
                            
                                
                                2835
                                
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                                    Mar 17.2020, 18:14:19
                                
                            
                        
	All:
I have some 1.5” Square Boards PCB’s which I want to strip all the solder mask off. Has anyone tried using this solvent for stripping solder makes. If the results were horrid, I would like to know.  
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                            A****min
Mar 18.2020, 14:54:54
	It may or may not. FR4 is some sort of epoxy resin and usually quite chemically resistant.
There is a situation about dissolving waste PCBs. They used aggressive organic solvents like DMF and NMP at elevated temperatures to do the job.