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tinting Urethane Casting resins

Discussion in 'Molding and Casting' started by AZ~Rich, Sep 29, 2015.

  1. Sep 29, 2015 #1
    AZ~Rich

    AZ~Rich " Africa" never fails to satisfy

    693
    368
    Tucson, AZ
    I was hoping to get some insight into what others do regarding using tints or pigments when mixing up their cast resins. Most of these two part resins are white or off white and from what I see pn manufacterer's sites, the pigments offered (a) pretty expensive and (b) are mostly primary colors with some variation but rather limited.

    I expect that water based pigments and paints are not usable with urethanes, but felt there must be other alternatives out there that I just have not come across yet.

    Thanks R.
     
  3. Oct 2, 2015 #2
    marshell-with-an-e

    marshell-with-an-e Member

    353
    1
    North Little Rock, Arkansas
    Smooth-on sells a product called So-Strong, it's a tint, last time I bought some about $17.00 for 4 oz.
    if you want the cast to come out other than a pastel color you'll need to change your casting material
    to a clear or translucent type. good luck.
     

  5. Oct 2, 2015 #3
    txoutdoors

    txoutdoors Active Member

    1,918
    16
    Scurry, Texas
    I have tried both water based paints and lacquer based paints and neither work. You do need to get the real stuff for it to work. Order the SO-Strong® 9-Pack Color Sampler from Smooth-on. It's $30 and will last a long time. Just a drop or two is all you need. Very concentrated stuff.
     
  6. Oct 4, 2015 #4
    idbatman

    idbatman Active Member

    1,132
    1
    Eastern Idaho
    You can use dry pigments . Paint powders or even tempra works but the best is still the So Strong
     
  7. Oct 4, 2015 #5
    AZ~Rich

    AZ~Rich " Africa" never fails to satisfy

    693
    368
    Tucson, AZ
    Thanks for the input. I have started coming to the same conclusion after more research. Dry pigments are an option as mentioned but harder to get consistent.
     
  8. Oct 8, 2015 #6
    Polymer Guy

    Polymer Guy Member

    284
    12
    Michigan
    Again, I addressed this in another post for ya AZ, but as mentioned above, don't use water based or lacquer. They will react and cause problems. Also don't use an epoxy based pigment. We also carry both opaque pastes which go into urethanes nicely. We use from a company called Chromoflow (formerly Plasticolors). If you go here, http://www.innovative-polymers.com/casting-accessories and click pigments, it will download to your PC a color chart with lots of options. If you are tinting, we also offer those for translucent castings.

    And yeah, I hate dry pigments. Mainly because they can be difficult to get into solution sometimes and they are even more of a mess. But this is a personal opinion, they do work.
     
  9. Oct 9, 2015 #7
    AZ~Rich

    AZ~Rich " Africa" never fails to satisfy

    693
    368
    Tucson, AZ
    I went ahead and purchased an assortment of small 1oz liquid pigments for urethanes and expoxy resins. It may take a little trial and error to get the formula right for my desired colors but that's certainly part of the fun.