drinking glasses sticking to resin coasters

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    • #9465 Reply
      Katherine Swift

      This question comes from Katie:

      I made resin coasters and glasses tend to stick to the coasters when condensation is high. They turned out great as far as being really clear to show the photos underneath. However- what can be done to prevent glasses from sticking- no one wants to use them at this point.

    • #9466 Reply
      Katherine Swift

      Hi Katie,

      Is the resin fully cured? When the coasters are dry and don’t have a glass on them, do they feel sticky? Are people only putting cold glasses on them or are they using them for hot drinks as well?

    • #9814 Reply

      Sorry for the delay in responding. The coasters are not sticky and are fully cured. It only appears to happen with cold glasses. The issue being when it has happens the coaster sticks to the glass then has dropped off or flown off when lifting up the glass. I love the look of them and would love to make more but no one likes the glasses sticking to the surface.

    • #9821 Reply
      Katherine Swift

      HI Katie,

      Since the resin is fully cured, it sounds like its a moisture condensation thing, not a resin thing. This discussion on Quora explains the physics of it:


    • #13140 Reply

      Hi all,

      I know this is a while after this thread was started, but I am having the same issues with my epoxy resin coasters. Plastic cups, beer bottles, and mugs do not stick but when I put a glass cup (cold or room temperature) on the coaster it will stick after 30 seconds of resting on the coaster. Did you happen to find a solution? I would hate to attempt to re-pour another layer of epoxy resin to have the same result.

      • #13651 Reply

        Has anyone found a solution to sweating glasses sticking to the resin coasters?

        They turn out beautifully, but don’t seem to function well as a coaster.


        • #14656 Reply

          I too have this problem. I even let my coasters cure for 24 hours. I can make beautiful coasters, yet cold drinks set on them only leak onto the surface they are set on, and then nobody wants to use them.

    • #14657 Reply

      I do not have a problem with glasses sticking to the surface, just that beverage “sweat” leaks on to the table top, rendering the coaster useless.
      Thank you,

    • #15593 Reply
      Laura Holte

      Does anyone have a solution for this? I’ve thought about using Castin Craft Resin Spray, Multi-Purpose Clear Gloss Finish / Sealer. I wonder if that would solve this problem. Any other recommendations out there?

    • #32257 Reply

      i have had this problem in the past, myself. this morning, i made a beautiful table top out of resin, spray paint, and mica. it is gorgeous, but i am anticipating the same issue, when glasses.. or really, anything sits on it in 1 place, for too long. so this time, im going to try a different approach.. once it has cured for several days, (i also find the longer cure time, the better the results, because some resins, in my experience, are not actually ‘completely’, —>100%<— cured for up to 2 weeks), when i put some ‘legs’ on it, i am also going to give it a good rub with furniture oil, and see if this helps keep the items from sticking. i will share my results! 🙂
      its all an experiment, anyway, right?! 🙂

      • #32269 Reply
        Katherine Swift

        That’s interesting Terri! Yes, please let us know if that works.

    • #34025 Reply
      Lorraine Hayes

      I want to make lots of coasters for keepsake gifts. Is Allumalite the best for coasters? The ladies are talking about cold drinks, but I’m concerned about hot beverages as well. I am a beginner and I really like this Resin Obsession.

      • #34132 Reply
        Katherine Swift

        Hi Lorraine,

        Are you using molds or using the resin to coat a surface? That will help me with a recommendation.

      • #34210 Reply
        Lorraine Hayes

        Hi Katherine. I will be using both. Thank you.

    • #45410 Reply
      Rebecca Monday

      I am having the same issue. I did tried using a acrylic sealant (Modge Podge sealant I believe) and it made it just as sticking after drying for a couple of hours. I am going to wait 24 hours and see if the sealant is still sticky.

    • #46101 Reply

      I to am having this problem with my coffee cup. I have tried a half doz resins at least. Very annoying indeed. If any body comes up with a solution please, please share it, or I’m going to do a really funky art work on my wall of all the coasters I made!

    • #47724 Reply

      I’m having the same problem. When I put hot cup on the coaster it stuck to it. Or, when I put something heavy on my resin tray it leaves mark on it.

    • #47754 Reply
      Rhonda J. Hunter

      I don’t have an answer for why sweaty glasses stick to coasters, but the people at Alumilite say NEVER, NEVER, put anything hot on a resin coaster!

    • #50748 Reply
      Clarence G. Hermansky

      I can only see one possible explanation. When condensation occurs on the outer surface and the water drips down to where the two surfaces contact one another, the water at this “interface” is relatively pure, which means that its surface tension is high. This high surface tension makes the disruption of the ring of water difficult, i.e. strong enough to hold the glass and coaster together as you pick up the glass.

      One way to weaken the interface would be to coat the coaster with a surfactant film that has a low surface tension in water, e.g. a fluoridated surfactant with low/slight solubility in water. If this simple fix doesn’t last very long, you might try mixing the fluro-surfactant with a binder or adhesive and coating the coaster with a very thin coating – let dry and test. A drop of water on an untreated coaster should bead up, whereas a drop on the treated coaster should wet and spread on the coaster – not bead up. Choice of binder/adhesive and Fluor-surfactant should be dilute (<1% in water or appropriate solvent), when applied to the coaster and selected to wet the coaster material. Once dry, you can test to see if your surfactant and binder/adhesive produce the desired affect.

    • #50754 Reply
      Clarence G. Hermansky

      See June 6th 2019 post.

      • #58487 Reply
        Debbie Aston


        I really want to tackle this problem. Glasses are sticking to my resin coasters, when the glass is lifted, so is the coaster. They fall to the ground and sometimes crack. I have three of these.

        However, I don’t understand your suggestion post. What is ‘surfactant film that has a low surface tension in water, e.g. a fluoridated surfactant with low/slight solubility in water.” Can you mention a specific product or products mixture?

    • #65273 Reply

      Here is a little video I found that may be able to help with this problem! I think the girl in this video uses a varnish or something like that:


    • #82271 Reply

      After one month curing i have faced same problem with my resined coasters using cup of cold water…
      No problem with mugs cold and hot neither with hot cup of coffee…

    • #82454 Reply
      Jan Stern

      1. Whenever I pick up a glass that immediately feels like it’s sticking to a coaster, I automatically keep my pinky on the coaster and lift the glass with my thumb and the three other fingers. No one taught me this; I must have figured this out decades ago. Nobody else does this?
      2. When I’m making my resin coasters, I keep a “lip” at the edge to prevent “sweat” water from spilling onto the table. After removing the coaster from the mold, I use 400 grit wet sandpaper to sand off the sharp edge that always remains by turning the coaster upside down onto the wet sandpaper and swirl it in circles, leaving a bit of it of lip. Water may still be on the bottom of the glass, but the table remains unscathed.

    • #82466 Reply
      Rhonda J Hunter

      Resin Obsession has two molds that reduce this problem – the mold with an “X” ridge in the center, and the Christian fish molds. The glass rests on the ridges and water goes into the little “wells”.

    • #82716 Reply

      I have the same problem. I created a tray with resin and glasses at normal temperature create sort of vacuum when we try to lift it. It is quite embarrassing. Has anyone been able to fix it in anyway? The resin is fully cured over months now. 🙁

    • #82720 Reply
      Dorianne Block

      I have tons of things to start making coasters,trivets and serving trays. I knew in advance that this would be a problem. So I’m going to try a couple things I hope will work. So when I put some decorative things like colored pearls or shells in the coasters I’ll push some down but towards the center but try to have some just slightly below the top so you can feel them and then the glasses would sit on a textured surface instead of a flat surface where glasses stick. I might have to let the resin sit for a while before I place the ones just slightly below the top. Another thing I want to try is again after the resin slightly cures I’ll sprinkle clear, white or a colored glitter or fine sand on the top. It would have a gritty feeling surface but still resin shiny and also hoping to keep the glass from sticking to the coaster. So what are your thought about this? Do you think it would work? Do you think they’ll still be pretty or fun looking? For the trivets I do need to use the resin that can take the heat from pots without leaving marks. Wish me luck!

    • #82822 Reply

      I am having the same problem. Anyone found a solution ?

    • #82989 Reply

      So I’m new to resin and super frustrated after reading all of this. I’ve just made a pile if coasters. Now I’m understanding that not only should be not use them for anything hot, but cold drinks are sticking to them? And there isn’t an answer for this?! Then why are we making coasters?!?! I had hoped to start selling mine and have gone through much expense, would love some advice. Thanks! ❤️

    • #84224 Reply

      Here is a video I found that should help!


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