This large hot box is controlled via a digital thermostat.
Diy composite curing oven.
If you have to build a big oven it might be helpful to look for a smaller commercially built oven for day to day use on smaller parts.
With a piece of tilebacker on the base for durability and heat distribution i have wired two 2000w heating elements in series to bring power down to 500w and use a thermostat to regulate temperature.
I just built a small curing oven for cerakote duracote paint ect.
I will use this primarily for tempering.
A professional industrial oven would probably be looking at 20 of the overall time with the heating element powered on.
Just wanted to share how i did it it was not that hard just took some time.
A good efficient oven is one that can insulate the heat so that the heating element only needs to be on for a minority of the curing time.
You could also use a pwm controller to regulate power.
I ll need to run multiple batches for curing but it will get the job done and can be stored under the work bench when not in use plus it was cheap to build.
Combination airflow airflow is an important feature to ensure proper curing of the part.
Post curing using heat is crucial in this application as the pieces will be installed outdoors.
But my curing oven is made from 100mm foil backed insulation board.
In this example a custom built oven is lowered over a large mold max silicone mold.
Impinging features to increase airflow onto the workpiece especially for complex geometry parts.
These composite cure ooa batch ovens will incorporate the following additional features.
This vertical hot box is large enough to accommodate very tall molds for crystal clear castings.