Ambiant mounting

- Agitation of blend between resin and hardener is too rapid.
- Improper degassing of specimen

- Gently blend the resin and hardener. Alternative is to use pressure vessel or vacuum system

- The proportion of resin and hardener is incorrect.
- Insufficient air cure.
- Oven curing temperature is too high.

- The reaction between the resin and hardener is too exothermic. 
- Measure accurate proportions of resin and hardener.

- Incorrect proportion of resin and hardener were used.
- Poor mix between resin and hardener.

- Increase hardener proportion to resin ratio.
- Homogenize more thoroughly the mixture of resin and hardener. 

- Mold temperature too high.

- Apply mold release

- Incorrect proportion of resin and hardener.
- Oxidized hardener.

- Measure accurate proportions of resin and hardener.
- Seal hardener container.

- Incorrect proportion of resin and hardener.
- Poor mix between resin and hardener.

- Measure accurate proportions of resin and hardener.
- Homogenize more thoroughly the mixture of resin and hardener.

- Not using the appropriate medium for mounting specimen.
- Samples were not cleaned prior to mounting sample
- Mounting shrinkage.

- Clean samples thoroughly before mounting sample.
- Use mounting medium that has good adhesion and no shrinkage. 

-Incorrect proportion of resin and hardener.
-Exothermic temperature is too low.

-Measure accurate proportions of resin and hardener.
-Homogenize more thoroughly the mixture of resin and hardener.