1、Water waves、Sticky
Formation reasons：Mold quality is poor and mold is not dry enough.
Solution：Use a better silicone mold, keep the mold clean and dry.
Formation reasons：Slow gelation time.
Solution：Increase the dosage of accelerant and curing agent.
Formation reasons：Improper proportion of accelerator and curing agent.
Solution：The addition of curing agent is generally controlled at 1% ~ 1.5%, which should not be too little.
Formation reasons：Curing agent is poor in quality.
Solution：Use a newer, better curing agent.
Formation reasons：The stone powder is wet.
Solution：Pay attention to the storage environment of stone powder and use dry stone powder.
Formation reasons：Improper demoulding time.
Solution：Demoulding time depends on the product, the general product demoulding can be selected in 3 ~ 5 times the gelation time.
2、Burst
Formation reasons：Add stimulant, curing agent too much, when the product is made, calorific value is too high and burst or finished product brittle crack.
Solution：Less accelerant, curing agent force.
Formation reasons：Added the metal fittingsinto the products to produce stress between them and the resin.
Solution：Choose smaller shrinkage resin or add some flexible resin in craft resin to enhance toughness.
Formation reasons：Product baking temperature is too high.
Solution：Bake at the right temperature.
Formation reasons：Intolerant to low temperature.
Solution：It is recommended to use Model 399A and other frost resistant resins.
3、Soft
Formation reasons：Too little curing agent.
Solution：The addition of curing agent is generally controlled at 1% ~ 1.5%, which should not be too little.
Formation reasons：Curing agent is poor in quality.
Solution：Use a better curing agent.
4、Gelation time too fast or too slow
Formation reasons：Too much or too little accelerant or curing agent is added when making.
Solution：Control the proportion of accelerator and curing agent according to product requirements.
5、Oilhole
Formation reasons：Too much oil is added in order to vacuum.
Solution：Try to avoid oiling substances.
Formation reasons：There is insoluble liquid in resin
Solution：Remove insoluble matter.