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  1. Wood, oil based exterior primer

    We use this on both HDU and wood. I've even used it with on the exterior of my house! https://hduprimeall.com/

  3. HDU primer

    There are a number of reasons we use one shot, mainly its availability and its durability. We often use their hardener in spray applications for greater durability. The do have a pantone color match system which is adequate to produce custom colors without having to rely on the paint store for...

  4. HDU primer

    I would be happy to answer any other questions you have also.

  5. HDU primer

    I like to topcoat with lettering white, then apply goldsize with a little yellow mixed in.

  6. HDU primer

    Hi Evan, I always let anything dry overnight as a general rule, especially if we are priming for top coating and then masking before carving. You can get away with less dry time. I've painted carved letters in a sign foam sign in the morning and topcoated them with oneshot at the end of the day...

  7. Question Painting HDU

    We have carved signs in HDU for about 25 years. We've found this to be the best for a waterbased easy to use primer for HDU sign foams: www.hduprimeall.com

  8. 3M Exiting Stencil and Filler Markets Effective Immediately

    I'll throw my 2 cents in here. Back when we were a large producer of sancarved slate welcome signs and plaques, we used Hartco sandmask resist. I've also used their vinyl sandblast stencil on wood and HDU. American made, great company to deal with! https://hartcoservice.com/sandmask/
  9.

    Paint Failure

    We've carved signs in HDU for years and have experienced just about every problem with paint and primer a sign carver can have. We use this now: www.hduprimeall.com
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