Smooth-On Mold Making and Casting Materials
Home Technical Info How To Frequently Asked Questions Media Gallery News Find a Distributor Mold Makers Directory
McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
About Us Seminars Tech Support Contact My Account Buy Now Smooth-On Home enews
Material Calculator
and Unit Convertor
Custom Formulating
Newsletter Signup

Get Smooth-On's Greatest Catalog Ever! Click Here
                   
How to Build a Hot Box
We’ve come up with a way to easily build a cheap “hot box” to any size you want.  Our design will create convection currents and maintains constant temperatures, resulting in even heating of materials which is exactly what you need.  The foam board and other materials needed to build the hot box can be found at Home Depot or other DIY stores.

Materials And Tools
2” (5 cm) Foil Insulation Board
Heater 
1” (2.5 cm) Drywall Screws
Glass Thermometer
Duct Tape
Table Saw & Jig Saw
Drill With 1” Hole Saw, Screwdriver Bit, and ¼” Drill Bit

 Gallery Image

1 - The foil-backed is cut to size carefully on a table saw.
 Gallery Image

2 - 1” (2.5 cm) screws are used to assemble the box.
 Gallery Image

3 - A jig saw is used to cut a port in the front panel to accommodate the blower end of the heater.
 Gallery Image

4 - Multiple vent holes are added into the sides of the box. They are sealed with duct tape and can be later opened/closed to vary and control the temperature.
 Gallery Image

5 - A 1/4” hole is drilled for the thermometer, which is needed to monitor temperature. Thermometers can be purchased through a scientific equipment supply house.
 Gallery Image

6 - The glass thermometer is inserted in the drilled hole.
 Gallery Image

7 - The mold is placed in the center of the base board. The base board insulates the mold from the concrete floor. Note: DO NOT place the mold or casting directly on a wood floor, table etc. Only use the hot box on a concrete floor or slab.
 Gallery Image

8 - The hot box is lowered over the mold and base board, making sure the mold is not too close to the sides and that all sides are flush to the floor.
 Gallery Image

9 - The heater is fit into the box port. This heater produced an ambient temperature of 203°F (95°C) in 5 min.
 Gallery Image

10 - Monitor the temperature while heater is operating by viewing the thermometer.
 Gallery Image

11 - The temperature can be controlled by adding or removing duct tape.
Smooth-On, Inc. Copyright © 2011
2000 Saint John Street, Easton PA 18042 | Order Desk: 800.762.0744 | Fax: 610.252.6200 | Tech Help: 800.381.1733 or 484.546.0466

E-Commerce Solutions