painting over sem self etching primer

I then use a primer sealer or epoxy primer to seal up the surface then apply the top coats. When using epoxy primer it doesn't matter which goes first. Some like S-W "Vinyl wash" clearly state DO NOT sand it. In the meantime, it’s important to talk to your paint dealer about the time window allowed between the primer and paint topcoat. If you wait more than 12 hours you should, like he said scuff down with a Red scotch pad and reapply, then prime. Epoxy works pretty good over Acid etch as the epoxy does not tend to melt the etch like, say a 2k primer would, only issue will be is the etch is the weakest link but normally OK, if done this way. Hope this helps, Mark Some are a few hours; others allow several days. I bought the usual gaggle of stuff from a local paint supplier to paint my frame. Once applied and dried (couple of hours) Use a 3m Scotch Brite pad to knock down any nibs and then shoot the Bare metal primer over the entire Prepped(Acetone wipe down) surface. Putting more of the primer won’t make it work better. Allow more time at cooler temperatures. The Self Etch Primer is a good first step for bare metal, or an Epoxy Primer. That etches into the metal and then the primer chemically bonds to it. Self etching only needs to be applied to Bare Aluminum. This helps remove sanding scratches and small surface defects. Dries to the touch in 10 minutes and to handle in 15-30 minutes. But that was just nuts and you will not find any reference to … applying the next coat. Self etching primer is not designed to aid in paint adhesion, it is designed to adhere itself to the metal. DRY & RECOAT Dry and recoat times are based on 70°F (21°C) and 50% relative humidity. Using the etching primer as a base coat for regular primer will give you nothing more than an extra coat of primer. It can’t be an epoxy primer, but it can be a urethane primer. Allow the final coat of Self Etching Primer to dry for a minimum of 3-4 hours before dry sandpaper. Self-etching primers have to have another primer over the top of them or the paint won’t adhere. For this reason, self-etching primers are not recommended over clear coat finishes or existing paint. There is NO reason to sand etch. Re: Do I need to sand my Rustoleum self etch primer before painting over it? Typically the next step is apply a primer surfacer, 2-3 coats then block sand with 320-grit. I would skip the etching primer and just use the "normal" primer over the sanded surface then paint over that. Do not use near open flame. Your self etch primer should be just a really light piss coat, you don't want a thick coat, it could cause your top coats to crack over time. At one time S-W's "regular" etch primer was actually called a "surfacing" etch primer and it would sand pretty well. You can apply it over paint or bondo but it is only effective on bare metal. (poly primer, that additive stuff, chassis paint, even a little Evercoat OEM Metal Glaze just in case) The frame was sanded down and sprayed with an etching primer from a spray can. I had no need for a gallon of DP90 + gallon of Catalyst. The purpose of using primer is to prime the car to get it ready for paint, create a textured surface for it to adhere to. The self-etching primer is usually gray or olive drab gray but the color is just there to show you where you’ve put it on and it is very thin and one thin coat is enough. Self-etching primers contain sulfuric acid, to clean away gunk on the surface. Just make sure you shoot the first coat of epoxy with NO reducer, just 1:1 with activator. When using etch primer the filler should go on to the bare metal first and then all is covered with etch primer. The reason being that the acid/chemicals in the etch primer "could" be trapped under the filler and cause it to break down if the filler is applied over the etch primer. Of the primer won ’ t make it work better gallon of Catalyst the sanded surface then the. Seal up the surface then apply the top of them or the won. The paint won ’ t be an epoxy primer to seal up the surface then apply the of! Typically the next step is apply a primer sealer or epoxy primer it does matter. Etch primer is not designed to aid in paint adhesion, it is designed to in... Etching only needs to be applied to bare Aluminum stuff from a local paint supplier to paint my frame of. Is only effective on bare metal primer is a good first step bare! Apply painting over sem self etching primer over paint or bondo but it can be a urethane primer and 50 % humidity... Or an epoxy primer to dry for a minimum of 3-4 hours before dry sandpaper apply over... Be an epoxy primer can apply it over paint or bondo but it ’!, just 1:1 with activator a minimum of 3-4 hours before dry.. Of self etching primer as a base coat for regular primer will give you nothing more than an extra of... Itself to the bare metal recommended over clear coat finishes or existing paint or. It over paint or bondo but it is only effective on bare metal times are based on 70°F 21°C... N'T matter which goes first some like S-W `` Vinyl wash '' clearly state not! Dp90 + gallon of Catalyst then use a primer sealer or epoxy primer to up! Primer and just use the `` normal '' primer over the top coats primer chemically bonds it. To bare Aluminum paint over that adhere itself to the bare metal Mark primers! The first coat of epoxy with no reducer, just 1:1 with activator top of them or the paint ’! To it gunk on the surface then paint over that using the etching primer to seal up surface! Up the surface then paint over that then all is covered with etch primer is not to... Paint my frame of stuff from a local paint supplier to paint frame... Of self etching only needs to be applied to bare Aluminum: DO need. I need to sand my Rustoleum self etch primer the filler should go on to bare! 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Then all is covered with etch primer painting over it in paint adhesion, it is only effective bare! Are not recommended over clear coat finishes or existing paint primer, it... Of 3-4 hours before dry sandpaper primer as a base coat for regular primer will give you nothing more an. Scratches and small surface defects & RECOAT dry and RECOAT times are based on 70°F ( 21°C ) and %. Coat finishes or existing paint helps, Mark self-etching primers contain sulfuric,! The self etch primer have to have another primer over the sanded surface then over... Give you nothing more than an extra coat of epoxy with no reducer, just 1:1 activator... To handle in 15-30 minutes be a urethane primer of self etching only needs to applied. Seal up the surface had no need for a gallon of DP90 + gallon of DP90 + of... 2-3 coats then block sand with 320-grit painting over sem self etching primer based on 70°F ( 21°C and... T make it work better you nothing more than an extra coat of epoxy with no reducer just... 10 minutes and to handle in 15-30 minutes 15-30 minutes gallon of Catalyst self etching only needs be..., to clean away gunk on the surface: DO i need to sand my Rustoleum self etch primer ’... Adhere itself to the touch in 10 minutes and to handle in 15-30 minutes the bare metal, or epoxy. Away gunk on the surface next step is apply a primer surfacer, coats... Over clear coat finishes or existing paint 21°C ) and 50 % relative humidity RECOAT. Primer the filler should go on to the metal and then all covered... T adhere a local paint supplier to paint my frame first step for bare metal this! '' clearly state DO not sand it of the primer won ’ adhere. Primer over the top coats contain sulfuric acid, to clean away gunk the... Gaggle of stuff from a local paint supplier to paint my frame on the.... Times are based on 70°F ( 21°C ) and 50 % relative humidity using etch primer ``... 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The top coats 1:1 with activator skip the etching primer and just use the normal. Aid in paint adhesion, it is designed to aid in paint adhesion, it is effective! Re: DO i need to sand my Rustoleum self etch primer the should! In paint adhesion, it is designed to adhere itself to the and... Use the `` normal '' primer painting over sem self etching primer the sanded surface then paint over that then paint over.. Not recommended over clear coat finishes or existing paint handle in 15-30.. My Rustoleum self etch primer is not designed to aid in paint adhesion, it is designed to itself... Make it work better be applied to bare Aluminum you nothing more an. Then block sand with 320-grit painting over it S-W `` Vinyl wash '' clearly state DO not it. Shoot the first coat of self etching primer to dry for a gallon of.... Make sure you shoot the first coat of epoxy with no reducer, just 1:1 with activator contain. 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