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The manufacturer determines the precise limit. Urethane primers cure more quickly than epoxy primers and have a lower application temperature minimum. Another difference is that urethane primers have a much thinner consistency than epoxy primers. This means urethane primer will be easier to apply to the substrate than thicker epoxy primers.DURABLE URETHANE PRIMER: Apply this gray urethane primer over painted or epoxy primed surfaces to create a professional high build coating of urethane primer, leaving a quality finish which will last for years to come. Spray like a pro without the expensive HVLP setup. Made in Germany using Eastwood specialist proprietary technology.Dupli-Color® has you covered from the start with a range of primers to fit any project. Mark will be showcasing when and where to use each of our different Dupli-Color® Primers in two projects. PRODUCTS USED IN THIS VIDEO. Self-Etching Primer.Apply this type of product to aid in adhesion and corrosion protection under other undercoats such as 2k (two-component) urethane or epoxy primers. An example of a fast-drying, two-component etch primer is DuPont's 22860S. This wash primer maintains excellent corrosion resistance and direct-to-metal adhesion for spot, panel and overall repairs.May 31, 2010 · 547 posts · Joined 2005. #2 · May 31, 2010. Epoxy is different than 2K. 2K is a polyeurathane. Both are mixed with a catalyst. Some 2K is a polyester. They contain materials like talc and other inert materials that are good for filling sanding scratches. Epoxy will not fill scratches, that is why it's great to use as a sealer.hotrodg726. 17265 posts · Joined 2010. #6 · Apr 5, 2014. You absolutely can't do that with PPG epoxy and lacquer, the solvents in the lacquer soften and wrinkle the epoxy. been there done that. only spray lacquer on fully cured epoxy. To seal with PPG epoxy, mix dp with hardener 1to1 reduce no more than 20%.A Guide to Automotive Primer. There are basically 3 types of automotive primers in use. Primers cover bare metal, provide a surface to sand smooth, and give a uniform surface for paint to stick to. A direct to metal primer is used to cover bare metal. This can be in the form of an etch primer, an epoxy primer, or a urethane primer.Background. OMNI® MP17x Series Epoxy Primers are two-component, non-chrome epoxies designed to provide superior corrosion protection and adhesion when applied over properly cleaned and sanded bare metal, fiberglass and painted surfaces. They are available in gray, white or black. Components Primer.Fast and easy cleanup. OptiFlow Epoxy and Urethane Ultimate Kit Details. Epoxy has an easy 1:1 mix ratio with separate catalyst (item 23131) to make two roll-able gallons. Enough to cover most cars. Urethane has a 4:1 mix ratio with with separate activator (23133). Enough to cover most cars. Epoxy sands easily 2-3 days after application.Apply Epoxy Primer. Use a coating roller or roller to apply the epoxy resin primer to the screed or concrete. Take care not to work in too many air bubbles. Allow the first coat to dry for 24 hours and then apply a second coat using the same procedure. This must now also dry for at least 24 hours.10 Best Primer for Automotive Painting- Reviews & Buyer's Guide 2021. 1. U-Pol (4.2 Voc) High Solids High Build Urethane Primer Kit With Hardener. 2. Rust-Oleum 286793 Automotive Universal Bonding Primer Spray. 3. SpeedoKote SMR-210/211 - Automotive High Build 2K Urethane Primer.Garage Noise. 59.7K subscribers. Subscribed. 548. 60K views 7 months ago. which is the right automotive primer when painting your car? I'll share my thoughts …A. Wash primers are water-thin coatings of phosphoric acid in solutions of vinyl butyral resin, alcohol and other ingredients. They are generally applied to give a dry film thickness of 0.3-0.5 mils (8-13 microns). The purpose of wash primers is to passivate steel and galvanized surfaces before applying a full bodied primer.A primer-sealer provides adhesion that helps basecoat adhere to the primer surface, minimizing the chance of topcoat/clear coat from running. Thus, primer-sealers increase the durability of your basecoat and topcoat paint job. Some common primer-sealers are urethane, epoxy, enamel, and lacquer sealers.SEM makes a spray can guide coat that goes on like dusty black. It's mostly just carbon dust with not much binder so it won't gum up the sandpaper. You don't need much at all, just enough to sort of darken the surface of it so that it's obvious where you missed with the sandpaper. You don't need to make it solid black.Epoxy Primer: generally you should think of it like "it sticks to everything, and everything sticks to it". For bodywork, this is the barrier between bare metal and your polyester fillers. ... But now you are ready to apply 2K urethane as a primer-surfacer. Stick to a brand or "system" from here on out. If you stick with SPI you might need ...The 7001 Polyurethane Primer works great as a structural steel primer when used with epoxy, polyurea or polyaspartic topcoats. When used as primer on concrete surfaces can help prevent or reduce problems associated from concrete outgassing. Comes in 1 gallon and 5 gallon containers and is available in a black and non-pigmented clear (amber color).

With 150 scratches left in the slick sand, you need to guide coat and re block with at least 320 and then spray one coat REDUCED epoxy as a sealer, then on to base. Second option, spray 2 coats of UNREDUCED epoxy and wet sand the epoxy with 400-600 (depending if color is solid or metallic) a couple days after spraying.MP17X Epoxy Primer/Sealer MP17X Epoxy Primer is a two-component, non-chrome epoxy designed to provide superior corrosion protection and adhesion when applied over properly cleaned and sanded bare metal, fiberglass and painted surfaces. Available in gray (MP170), white (MP171) and black (MP172). National Rule CompliantAfter reading the article I was thinking about down epoxy primer first (I am stripping the body down to bare metal). ... Can one of the experts tell me if red oxide (gillespie synthetic enamel) is ok over the body filler and the epoxy primer. The primer will be Urethane most likely. Dec 1, 2009 #2 jasonjc Well-known member. 5,325 283 83 ...Medicine Matters Sharing successes, challenges and daily happenings in the Department of Medicine ARTICLE: Survivorship after COVID-19 ICU stay AUTHORS: Megan M. Hosey and Dale M. ...

Remove the all the filler and lacquer primer and be done with it, knowing what you have. All epoxy primers can be applied over body filler. Epoxy needs the metal to be sanded with 80 grit to get the best adhesion. 80 grit metal, clean the metal with a surface cleaner or WG remover and spray 2 WET coats of epoxy.Lacquer-based primer doesn't seal out moisture the way it should, so it would be better to start over from bare metal. That said, yes Epoxy or even a good 2K primer will 'seal' the lacquer primer IF it has cured enough. I'd personally use a heat-lamp or two and bake all the recently-primed panels for a night each to cook out solvents.Epoxy Primer. • Available in Gray, White, Black & Red Oxide. • Available in Gallons or Quarts, Activates with 6700-1 or 6700-4. • Easily sandable unlike many other epoxies. • 12-16 hour dry sand time depending on temperature. • 30 minute flash time at 70 degrees, base over in as little as 4 hours at 1:1. • Contains U.V. Inhibitors ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Urethane primer vs. sealer I'm getting ready to paint a 67' camaro.. Possible cause: Epoxy is a direct to metal primer. 2K urethanes are not. If you apply a 2K ur.