I’ve ordered this epoxy twice (Dec 2018 and March 2020). I’m using it as a potting epoxy where the thickness is around 6 to 10mm (diameter ~8mm).
Cure time: My application is thick. I need to extend cure times. I’ve noticed that it’s best if I let it sit for at least 72 hours followed by an oven cure at around 140 to 160F for 2 hours. I typically turn the oven off after 2hrs and let everything cool to room temp with the oven door closed. Lately I’ve even allowed it to sit for a week prior to the oven cure. If allowed to sit for an extended time, followed by oven cure, it seems to maintain a very shiny, perfect, black finish. Testing the surface by touch too early will dull the finish. The oven cure seems to ensure a hard smooth finish. Oven curing too early seems to result in a lesser surface which is difficult to explain.
Leveling: It self-levels well and even after popping a bubble from air entrapment hours after mixing with the depth of pour I’m using. The assembly I am using it on has a tendency to trap and release air over an extended time but if you pop the bubble it will tend to self-heal. That extended cure time gives you a lot of working time.
Adheres well to a prior pour: If you pot something and need to add additional epoxy later it seems to adhere to itself very well. I tried an experiment where I poured a level surface, about 3-4cm in diameter and 5mm thick. I allowed it to cure in ambient, 65-70F, for 2 weeks. I then mixed a fresh batch and placed a 1cm spot of new epoxy on the cured surface. I tried to remove the 1 cm spot 2 weeks later and it will not release. It acts as if it is a permanent part of the original pour.
Electrical resistance: Someone mentioned the epoxy is electrically conductive. I just tried to measure resistance on a fully cured section with the meter set to mega Ohms and my meter measures infinite resistance (flashes out-of-scale). The sample I tested ambient-cured without oven cure for about 6 weeks. I’ve never tried it prior to cure. The comment by the other reviewer was alarming but I could not repeat what the other reviewer experienced.
Bottle type: The hardener in my most recent purchase came in a bottle with a “child-safe” pill-bottle type top. The hardener was skinned over (evidence of air exchange). My prior order came in a nicely fitting normal screw top lid like the resin bottle had each time. The older screw top hardener never had a skinning issue even more than 1 year after the initial purchase with a partially filled bottle. Thankfully I saved the older bottle. I immediately I transferred the contents of the pill-bottle to the older bottle and I’ve had no issues since.
Mix: I mix by weight so I make certain I have the proper ratio. I’ve had a couple of samples which seemed to essentially never fully cure. I assume that it was due to a small portion of resin which may have been in an area where it was difficult to mix with the hardener. I mix in a Dixie cup and normally 20 grams of resin plus 10 grams of hardener so it is certainly a manageable amount to thoroughly mix. The issue has not occurred again but I now discard the wooden stirring stick and apply with a new stick (I use wooden coffee stir sticks and pop bubbles with a round wooden toothpick).
Temperature resistance: I’ve only exposed it to about 325F and never to the claimed upper limit.
Extras in the kit/measuring: Most of the small plastic measuring cups came cracked. These were one-time use at best. They are garbage and I wish they would eliminate them from the kit. I use a Dixie cup, wooden coffee stir sticks, and a gram scale; of course using a separate stir stick for resin and hardener. The resin pour can be stopped by sliding the stir stick across the pouring surface and the hardener is lower viscosity and can be incremented easily by allowing it to drip from the stir stick into your cup.
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Overall very happy with the product... Newer "child-safe" hardener bottle does not seal well
Reviewed in the United States on February 21, 2021
I’ve ordered this epoxy twice (Dec 2018 and March 2020). I’m using it as a potting epoxy where the thickness is around 6 to 10mm (diameter ~8mm).Cure time: My application is thick. I need to extend cure times. I’ve noticed that it’s best if I let it sit for at least 72 hours followed by an oven cure at around 140 to 160F for 2 hours. I typically turn the oven off after 2hrs and let everything cool to room temp with the oven door closed. Lately I’ve even allowed it to sit for a week prior to the oven cure. If allowed to sit for an extended time, followed by oven cure, it seems to maintain a very shiny, perfect, black finish. Testing the surface by touch too early will dull the finish. The oven cure seems to ensure a hard smooth finish. Oven curing too early seems to result in a lesser surface which is difficult to explain.Leveling: It self-levels well and even after popping a bubble from air entrapment hours after mixing with the depth of pour I’m using. The assembly I am using it on has a tendency to trap and release air over an extended time but if you pop the bubble it will tend to self-heal. That extended cure time gives you a lot of working time.Adheres well to a prior pour: If you pot something and need to add additional epoxy later it seems to adhere to itself very well. I tried an experiment where I poured a level surface, about 3-4cm in diameter and 5mm thick. I allowed it to cure in ambient, 65-70F, for 2 weeks. I then mixed a fresh batch and placed a 1cm spot of new epoxy on the cured surface. I tried to remove the 1 cm spot 2 weeks later and it will not release. It acts as if it is a permanent part of the original pour.Electrical resistance: Someone mentioned the epoxy is electrically conductive. I just tried to measure resistance on a fully cured section with the meter set to mega Ohms and my meter measures infinite resistance (flashes out-of-scale). The sample I tested ambient-cured without oven cure for about 6 weeks. I’ve never tried it prior to cure. The comment by the other reviewer was alarming but I could not repeat what the other reviewer experienced.Bottle type: The hardener in my most recent purchase came in a bottle with a “child-safe” pill-bottle type top. The hardener was skinned over (evidence of air exchange). My prior order came in a nicely fitting normal screw top lid like the resin bottle had each time. The older screw top hardener never had a skinning issue even more than 1 year after the initial purchase with a partially filled bottle. Thankfully I saved the older bottle. I immediately I transferred the contents of the pill-bottle to the older bottle and I’ve had no issues since.Mix: I mix by weight so I make certain I have the proper ratio. I’ve had a couple of samples which seemed to essentially never fully cure. I assume that it was due to a small portion of resin which may have been in an area where it was difficult to mix with the hardener. I mix in a Dixie cup and normally 20 grams of resin plus 10 grams of hardener so it is certainly a manageable amount to thoroughly mix. The issue has not occurred again but I now discard the wooden stirring stick and apply with a new stick (I use wooden coffee stir sticks and pop bubbles with a round wooden toothpick).Temperature resistance: I’ve only exposed it to about 325F and never to the claimed upper limit.Extras in the kit/measuring: Most of the small plastic measuring cups came cracked. These were one-time use at best. They are garbage and I wish they would eliminate them from the kit. I use a Dixie cup, wooden coffee stir sticks, and a gram scale; of course using a separate stir stick for resin and hardener. The resin pour can be stopped by sliding the stir stick across the pouring surface and the hardener is lower viscosity and can be incremented easily by allowing it to drip from the stir stick into your cup.
Reviewed in the United States on February 21, 2021
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Reviewed in the United States 🇺🇸 on February 21, 2021
Cure time: My application is thick. I need to extend cure times. I’ve noticed that it’s best if I let it sit for at least 72 hours followed by an oven cure at around 140 to 160F for 2 hours. I typically turn the oven off after 2hrs and let everything cool to room temp with the oven door closed. Lately I’ve even allowed it to sit for a week prior to the oven cure. If allowed to sit for an extended time, followed by oven cure, it seems to maintain a very shiny, perfect, black finish. Testing the surface by touch too early will dull the finish. The oven cure seems to ensure a hard smooth finish. Oven curing too early seems to result in a lesser surface which is difficult to explain.
Leveling: It self-levels well and even after popping a bubble from air entrapment hours after mixing with the depth of pour I’m using. The assembly I am using it on has a tendency to trap and release air over an extended time but if you pop the bubble it will tend to self-heal. That extended cure time gives you a lot of working time.
Adheres well to a prior pour: If you pot something and need to add additional epoxy later it seems to adhere to itself very well. I tried an experiment where I poured a level surface, about 3-4cm in diameter and 5mm thick. I allowed it to cure in ambient, 65-70F, for 2 weeks. I then mixed a fresh batch and placed a 1cm spot of new epoxy on the cured surface. I tried to remove the 1 cm spot 2 weeks later and it will not release. It acts as if it is a permanent part of the original pour.
Electrical resistance: Someone mentioned the epoxy is electrically conductive. I just tried to measure resistance on a fully cured section with the meter set to mega Ohms and my meter measures infinite resistance (flashes out-of-scale). The sample I tested ambient-cured without oven cure for about 6 weeks. I’ve never tried it prior to cure. The comment by the other reviewer was alarming but I could not repeat what the other reviewer experienced.
Bottle type: The hardener in my most recent purchase came in a bottle with a “child-safe” pill-bottle type top. The hardener was skinned over (evidence of air exchange). My prior order came in a nicely fitting normal screw top lid like the resin bottle had each time. The older screw top hardener never had a skinning issue even more than 1 year after the initial purchase with a partially filled bottle. Thankfully I saved the older bottle. I immediately I transferred the contents of the pill-bottle to the older bottle and I’ve had no issues since.
Mix: I mix by weight so I make certain I have the proper ratio. I’ve had a couple of samples which seemed to essentially never fully cure. I assume that it was due to a small portion of resin which may have been in an area where it was difficult to mix with the hardener. I mix in a Dixie cup and normally 20 grams of resin plus 10 grams of hardener so it is certainly a manageable amount to thoroughly mix. The issue has not occurred again but I now discard the wooden stirring stick and apply with a new stick (I use wooden coffee stir sticks and pop bubbles with a round wooden toothpick).
Temperature resistance: I’ve only exposed it to about 325F and never to the claimed upper limit.
Extras in the kit/measuring: Most of the small plastic measuring cups came cracked. These were one-time use at best. They are garbage and I wish they would eliminate them from the kit. I use a Dixie cup, wooden coffee stir sticks, and a gram scale; of course using a separate stir stick for resin and hardener. The resin pour can be stopped by sliding the stir stick across the pouring surface and the hardener is lower viscosity and can be incremented easily by allowing it to drip from the stir stick into your cup.
Size: 11.5 fl. oz KitVerified Purchase
Overall very happy with the product... Newer "child-safe" hardener bottle does not seal well
Reviewed in the United States 🇺🇸 on February 21, 2021
I’ve ordered this epoxy twice (Dec 2018 and March 2020). I’m using it as a potting epoxy where the thickness is around 6 to 10mm (diameter ~8mm).Reviewed in the United States 🇺🇸 on February 21, 2021
Cure time: My application is thick. I need to extend cure times. I’ve noticed that it’s best if I let it sit for at least 72 hours followed by an oven cure at around 140 to 160F for 2 hours. I typically turn the oven off after 2hrs and let everything cool to room temp with the oven door closed. Lately I’ve even allowed it to sit for a week prior to the oven cure. If allowed to sit for an extended time, followed by oven cure, it seems to maintain a very shiny, perfect, black finish. Testing the surface by touch too early will dull the finish. The oven cure seems to ensure a hard smooth finish. Oven curing too early seems to result in a lesser surface which is difficult to explain.
Leveling: It self-levels well and even after popping a bubble from air entrapment hours after mixing with the depth of pour I’m using. The assembly I am using it on has a tendency to trap and release air over an extended time but if you pop the bubble it will tend to self-heal. That extended cure time gives you a lot of working time.
Adheres well to a prior pour: If you pot something and need to add additional epoxy later it seems to adhere to itself very well. I tried an experiment where I poured a level surface, about 3-4cm in diameter and 5mm thick. I allowed it to cure in ambient, 65-70F, for 2 weeks. I then mixed a fresh batch and placed a 1cm spot of new epoxy on the cured surface. I tried to remove the 1 cm spot 2 weeks later and it will not release. It acts as if it is a permanent part of the original pour.
Electrical resistance: Someone mentioned the epoxy is electrically conductive. I just tried to measure resistance on a fully cured section with the meter set to mega Ohms and my meter measures infinite resistance (flashes out-of-scale). The sample I tested ambient-cured without oven cure for about 6 weeks. I’ve never tried it prior to cure. The comment by the other reviewer was alarming but I could not repeat what the other reviewer experienced.
Bottle type: The hardener in my most recent purchase came in a bottle with a “child-safe” pill-bottle type top. The hardener was skinned over (evidence of air exchange). My prior order came in a nicely fitting normal screw top lid like the resin bottle had each time. The older screw top hardener never had a skinning issue even more than 1 year after the initial purchase with a partially filled bottle. Thankfully I saved the older bottle. I immediately I transferred the contents of the pill-bottle to the older bottle and I’ve had no issues since.
Mix: I mix by weight so I make certain I have the proper ratio. I’ve had a couple of samples which seemed to essentially never fully cure. I assume that it was due to a small portion of resin which may have been in an area where it was difficult to mix with the hardener. I mix in a Dixie cup and normally 20 grams of resin plus 10 grams of hardener so it is certainly a manageable amount to thoroughly mix. The issue has not occurred again but I now discard the wooden stirring stick and apply with a new stick (I use wooden coffee stir sticks and pop bubbles with a round wooden toothpick).
Temperature resistance: I’ve only exposed it to about 325F and never to the claimed upper limit.
Extras in the kit/measuring: Most of the small plastic measuring cups came cracked. These were one-time use at best. They are garbage and I wish they would eliminate them from the kit. I use a Dixie cup, wooden coffee stir sticks, and a gram scale; of course using a separate stir stick for resin and hardener. The resin pour can be stopped by sliding the stir stick across the pouring surface and the hardener is lower viscosity and can be incremented easily by allowing it to drip from the stir stick into your cup.
Images in this review
