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I made this hot box to keep the epoxy above room temperature.  The higher temperature allows the epoxy to wet out the fiberglass cloth more easily.

The box is big enough to hold the epoxy pump, an extra gallon of resin, two quarts of hardener and the 5 minute epoxy, all stored behind the pump.

I attached some insulation to the interior walls and I wired a thermostat to a light bulb in order to control the temperature.  Most of the design ideas came from reading other builders' websites. 
 
I also added a cage around the light bulb to reflect some of the light away from the reserviors and reduce the chance of breaking the bulb when pulling out the epoxy containers stored behind the pump.
 
I created a slot in the side of the box and bought a short length of copper pipe to stick over the pump handle.  This allows me to pump epoxy without opening the front door of the box and letting all of the hot air out.  This is an idea that I got from Rick Maddy's website. 
 
Rick's website mentioned that the left side of the pump would lift up when the handle was pushed down using the pipe extension.  To fix this problem I bent two metal brackets into an S shape.  I fastened the bottom portions of the brackets to the floor of the box and then slipped the base of the pump underneath the top portions of the bracket.  One bracket is behind the pump, and the is other on the side.  The pump is not fastened to the brackets, so it can be slid in and out of the box very easily when necessary.
 
The picture below shows the bracket behind the pump base.

This picture shows the bracket on the left side of the pump base.


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