Grease n Wax Cleaner before Epoxy?

M

moparmusclecars

So why exactly are we referred to using the SPI 700 Water based grease n wax before spraying epoxy down? Why not the solvnet based one, instead? I am hearing lots of talk about using a water based grease n wax is bad, as it takes longer to dry, and actually caused flash rust to start, even when wiped down properly. Is the advantage of the water bourne product just better for bare metal cleaning? I am not sure how to answer this properly when i am quizzed, as to why SPI recommends the water bourne over the solvent based grease n wax cleaner on bare metal before epoxying. I get people telling me, "I would never use a water bourne grease n wax on bare metal, are you crazy?" I hope Barry will chime in.
 
Does this sound right, or not? "Part of the reason for waterbased cleaner vs solvent, is the solvent cleaners contain salts(acids) to slow the drying times. the salts etch the metal and can cause adhesion issues. True water and bare metal CAN cause rust to start, but they are designed to evaporate leaving no residue behind. making it the better choice". I want to learn, teach me, please!
 
All I use is solvent based 710 wax and grease remover.
If applied properly it is not left on the car long enough to dry. I put some into a spray bottle, spray it on and wipe it off immediately with a clean blue shop towel. If the surface is rough I follow with compressed air to remove any shreds of paper towel that may be left before shooting epoxy.
Now, if this is somehow wrong, I can't see how because I have never had a problem doing it this way.
 
I use the water base cleaner on bare metal,bondo and right before final paint ain't haven't noticed a problem . The only time I use a solvent base anymore is to clean my bondo spreaders and if I can actually see oil or grease on something,the spi water base really made a difference to me for fish eyes and might just be me but the panels feel cleaner.
 
i dont know where you are getting your info but stop listening to them . you can use either. waterbase is fine.solvent cleaner is not going to etch the metal . NO cleaner should be left to dry. that defeats the purpose. the cleaner floats the contaminates so you can wipe them off.
 
If a solvent cleaner contains acids, it is not intentional, but a byproduct of recycling or an impurity. SPI #710 Wax and Grease Remover does not contain acid residues to my knowledge because it is a "virgin" product. Other cleaners, especially cheap thinners, can contain acid residues.

The reason SPI recommends SPI #700 Waterborne Wax and Grease Remover is because it has been tested to remove more contaminants from bare metal than solvent based cleaners, not because of any problem inherent in solvent based wax and grease removers.
 
moparmusclecars;n79032 said:
So why exactly are we referred to using the SPI 700 Water based grease n wax before spraying epoxy down? Why not the solvnet based one, instead? I am hearing lots of talk about using a water based grease n wax is bad, as it takes longer to dry, and actually caused flash rust to start, even when wiped down properly. Is the advantage of the water bourne product just better for bare metal cleaning? I am not sure how to answer this properly when i am quizzed, as to why SPI recommends the water bourne over the solvent based grease n wax cleaner on bare metal before epoxying. I get people telling me, "I would never use a water bourne grease n wax on bare metal, are you crazy?" I hope Barry will chime in.
Click to expand...

The 700 will clean most contaminates in one swipe that can take a good solvent cleaner in 4 to 7 swipes, depending on the contaminates.
A simple test is, take a stripped panel, clean a 3 foot area with solvent, go over the spot with the 700 with clean rags and it will not look like you cleaned it.
People that make statements like you heard usually don't have a clue.
 
You must log in or register to reply here.
Back
Top