Cured TotalBoat epoxy products can be removed mechanically.
There are a few different ways to do it, depending on how strongly the epoxy has bonded to the surface. Whichever method you choose, be very careful not to harm yourself or damage the surface while removing the cured epoxy.
Flexing - Surfaces that naturally repel epoxy, including some plastics and silicones, can be flexed or tapped with a chisel to dislodge the cured epoxy.
Grinding or sanding - Epoxy bonds strongly to non-porous surfaces, so it takes more effort to remove. Sand or grind down the cured epoxy. Again be careful not to damage the surface underneath, and always wear proper personal protection when sanding or grinding cured epoxy.
Warming with a heat gun - NOTE: Take extreme care to use this method ONLY when it won't damage surrounding areas, and if it's safe to do so - wear proper PPE and have adequate ventilation in your work area. As you warm the cured epoxy with a heat gun, the bond will start to weaken, at which point you can use a chisel or putty knife to peel away the cured epoxy.
Surrounding with acetone - NOTE: This method is ONLY for porous surfaces such as concrete or wood. Dampen a rag with acetone and place it around the cured epoxy. As the acetone works its way into the surface around the epoxy, you will eventually be able to pry it up with a putty knife.
Using chemicals, adhesive removers, or paint strippers - NOTE: Take extreme care when handling any of these products - wear proper PPE and make sure there is adequate ventilation in your work area. Using chemicals, such as TotalBoat Eco Solvent, paint stripper, or adhesive remover, can work if you put the chemical on the cured epoxy and the area immediately surrounding it, but this method works very slowly, and can do more harm than good. You have to make sure the chemical does not dry out during the process. Eventually, you can use a putty knife to peel back and pry up the cured epoxy.