Post by cubswin2016 on Jun 2, 2018 14:41:35 GMT -5
Made a concrete coffee table and have a "river" of blue resin wandering through the center. The "river" measures 36" long x 6" wide and is 1/2" deep. I colored the resin blue then noticed it was just a hair short of being level with the concrete top. I added clear to level it out. It has been four days of curing as of Saturday, June 2. I will admit I am impatient at times but how long will it take to not be sticky to the touch? The blue had been poured first then the clear added almost right after. So the blue had not cured fully-I figured I would be safe to just keep layering even if the first layers were not fully cured. Do I just need to give it longer? If it turns out I will send pics !
If you're using the clear resin it does take longer to hit full cure. It takes 7 days for clear to be fully cured and I know from personal experience that it will stay sticky feeling until it hits full cure. You can hurry it up a little by warming it with a heat gun (don't get too close or let it stay on it too long) or my favorite - use a hair dryer for 10 minutes at a time. But it will only speed it up by a day or two. So yes it just needs a little longer to cure. I would love to see what it looks like so yes please on sending pictures.
Post by carol - Alumilite Corp on Jun 4, 2018 14:11:09 GMT -5
Are you using the Clear or the Amazing Clear Cast...? We would all love to see pictures! Heat is an option on either one. The mix ratio of the Amazing Clear Cast Epoxy is 1:1 by Volume. Using a graduated mixing container, measure out equal parts per side. Varying the mix ratio will alter the cure and change the physical properties in a negative ways such as tackiness or uncured surfaces. When mixing multiple batches, it helps to have a dedicated side A and side B measuring cup, which are then added to a larger mixing container. After the materials have been poured together, mix thoroughly (keeping the stir stick in contact with the bottom of the cup - reduces air from being introduced into your resin) for approximately 3-5 minutes. Make sure to scrape the sides and the bottom of the mixing cup and continue to mix until no swirls are seen. Once no swirls are seen, mix for an additional 2 minutes. Because of the differences in viscosity between the two parts, mixing takes extra time.
Cubswin2016, with the Alumilite Clear urethanes less than 1/8” must be post cured. The mix ratio on the urethane's is 1:1 by weight! Generally, for most application, ambient temperature curing is adequate; however, maximum physical properties and heat resistance is obtained by post curing for 16 hours at 150 degrees F, or for 6 to 8 hours at 180 degrees F. Parts may require some support during heat curing. A suggested cure schedule is: 3 to 5 days at room temperature (to minimize any softening during heating), followed by 4 to 6 hours at 130 to 150 degrees F. This cure schedule minimizes part distortion and shrinkage, while affording maximum toughness and heat sag resistance. Supporting the part during the post cure may be necessary.
It is imperative on either to measure and mix/blend well according to instructions.
Hello, I am having the same issue- I poured the solution over 2 galvanized metal tray that i painted images on. One tray is fine the other is still tacky after 2 weeks. I did mix the solution for each separately and i guess i messed up the 2nd mixture. Is there a way to save this tray? Can I pour another layer over it?? is there a trick to getting it out and redoing?? Anything??
Post by carol - Alumilite Corp on Jul 19, 2018 13:59:49 GMT -5
Which Clear, the urethane or the Amazing Clear Cast? In my previous post I explained that it is imperative (especially with the Amazing Clear Cast) to make sure you have measured 1:1 by volume and mixed/blended well or you may be left with a tacky layer/piece. Please let me know for sure what resin you are using Hawk 22.
Have a happy Friday tomorrow and a wonderful weekend.
Obviously I didn't read close enough. I mixed Amazing clear cast by weight instead of volume. I mixed 80g of each. Will it still cure over time? Bottles aren't clearly marked, however, I believe the hardener (thinner of the 2) is more than the resin, by volume. I noticed a difference but thought it was ok. Yes, the next batch was mixed properle and worked properly. Just wondering if time will allow it to cure?
Post by carol - Alumilite Corp on Jul 25, 2018 12:12:51 GMT -5
Try adding some heat, 100F would be an ideal temperature to try to get it to kick over. Perhaps a heat lamp (not sitting it right on top of the resin) but close enough to get the heat/warmth. Let us know Sleder, please.
Sorry, I am new to this whole forum chat concept. I have a question and am not sure if I am in the right place. But here it goes. I have measured and mixed the "Amazing clear cast" and am having problems with it curing. I measured out equal parts, mixed and poured. I actually poured 3 projects at the same time, all from one batch. the 2 smaller ones cured and dried in 24 hours, but the 3rd is still sticky. To the point that when I tried to use a hair dryer, as I saw mentioned in this forum, I could actually see movement in the resin. I guess my question is now what can I do? Should I scrap the project, try to pour additional resin on top? Any thoughts or ideas?
Post by carol - Alumilite Corp on Aug 9, 2018 8:49:58 GMT -5
Please call me...there are a few more things we can go over. I am sure you have read all the post prior to your post... I would like to reiterate how important measure and mix is with the Amazing Clear Cast. It must be by volume, not weight! Secondly, the mix/blend... sometimes people are hesitant to mix well not wanting to introduce bubbles, it must be blended well so a chemical cross link will cure it properly into an inert and hard piece of plastic. It states on the directions mix slowly which is fine but with the long open time you have plenty of time to blend well and it still will allow for air to release from your castings. If it is still moving, that sounds more like ratio or possibly you may not have an A and B side. Temperature can on occasion cause for a longer cure, so room temperature of 72-74F is recommended. Please call me Cat.