Mold Material Heat Tests
November 28, 2002


This set of tests was done to show if there was any degradation of these materials after sustained exposure to standard Polymer Clay Temperatures.   Each mold was made with the same item and baked with clay within at 260DegF. 

At each interval, images were taken of each mold and the clay that had been baked within at 10x and 60x magnification.  No edits were made to the photographs other than to sharpen and/or lighten or darken the images for better viewing.  For some reason, it's especially hard at 60x to show the details in the pink molds and the clay results.  I did my best. 

For a page of tests showing heat tests at 450DegF (a claim made by all three manufacturers), please go HERE  and for a page showing clay that was baked in the molds we used for our testing, please go HERE

 
Miracle Mold before baking at 10x magnification
Very clean replica
Product B before baking at 10x magnification
Fairly clean - a few tiny pinholes evident at this level
Product C before baking at 10x magnification
Pinholing evident in some areas
   
Miracle Mold before baking at 60x magnification

Ridges sharp no degradation
Product B before baking at 60x magnification

Pockets and holes more evident
Product C before baking at 60x magnification

Quite evident pocketing and holes
 
Miracle Mold after 1 hr at 260degF
at 10x magnification
No noticeable degradation
Click HERE for clay baked in mold at this stage
Product B after 1 hr at 260degF
at 10x magnification
Pinholes start becoming evident
Click HERE for clay baked in mold at this stage
Product C after 1 hr at 260degF
at 10x magnification
Pitting starts
Click HERE for clay baked in mold at this stage
 
Miracle Mold after 1 hr at 260degF 
at 60x magnification
Sharp ridges, no pitting, no holes
Click HERE for clay baked in mold at this stage
Product B after 1 hr at 260degF
at 60x magnification

Surface pitting and holes become evident
Click HERE for clay baked in mold at this stage
Product C after 1 hr at 260degF 
at 60x magnification

Pitting and beginning of mold breakdown (losing pieces)
Click HERE for clay baked in mold at this stage
 
Miracle Mold after 2 hrs at 260degF
at 10x magnification
Ridges still sharp and fine detail present.
Click HERE for clay baked in mold at this stage
Product B after 2 hrs at 260degF
at 10x magnification

Discoloration on edges showing.  Flaking occurs.
Click HERE for clay baked in mold at this stage
Product C after 2 hrs at 260degF
at 10x magnification
Flaking and pitting.  Loss of detail and burn/browning evident.  Click HERE for clay baked in mold at this stage
 
Miracle Mold after 2 hrs at 260degF
at 60x magnification
No pitting or bubbling.  Ridges remain sharp.
Click HERE for clay baked in mold at this stage
Product B after 2 hrs at 260degF
at 60x magnification

Very evident disoloration, pitting, flaking.  Loss of detail.
Click HERE for clay baked in mold at this stage
Product C after 2 hrs at 260degF
at 60x magnification
Extreme bubbling/pitting, browning.  Shallowing/smoothing of ridges.  Detail degrading. Click HERE for clay baked in mold at this stage