Circuit board pre-heat workstations are very expensive, $350.00 - $2500.00.
The goal of this instructable is to demonstrate how to make a circuit board pre-heat workstation for around $50.00 with no special tools and the majority of materials from Home Depot and Harbor Freight Tools.
Special Warning - Note This project involves working with AC line voltage and high current.
If you have little experience working with household line current please get someone to help you with this project.
I will try to assist you with areas of caution, but you must be aware that AC current can be very dangerous.
By reading this Instructable you must be aware that I am not responsible for any injury or damage you may cause to yourself or your surroundings. (With the normal warnings out of the way, lets have some fun)
Step 1: Bill of Materials
Get your pad and pencil we are going shopping:
Some 1/4" and 1/2" plywood from Home Depot or Lowe's)
(Future upgrade, I want to build a metal case for the heat blower and circuit.)
1 $9.99 Heat Gun from Harbor Freight Tools
1 Three prong (grounded ac power cord)
(Special Warning - DO NOT USE THE UNGROUNDED POWER CORD THAT CAME WITH THE HEAT GUN)
1 1 1/2" copper elbow pipe fitting
1/4" square tubing - or whatever size you can get
4 machine screws, nuts and washers
Power cord wire hold down clamp - Electrical department
16 gage wire (assorted colors)
16 gage wire nut and wire terminal.
Special Warning! (You must use at least 16 gage wire for the high current side of the circuit)
Smaller gage wire for fan and low circuit side of the circuit
Roll of steel strap (electrical department, Home Depot)
1 3/4" or 2" hole saw
Q4015LT Triac/Diac (Mouser, Digi-Key or similar)
Heat Sink (nut and bolt to fasten heat sink)
(I used Digi-Key part number HS107-HD)
Special Warning (YOU MUST USE THE HEAT SINK)
.1 uF Capacitor (Ceramic at least 50V) (Mouser, Digi-Key, Radio Shack)
10K Resistor (at least 1/2 watt)
100K potentiometer (variable resistor) (at least 1/2 watt)
4 wire Terminal connector strip (Mouser, Digi-Key, Radio Shack)
5 wire Terminal strip (Mouser, Digi-Key, Radio Shack)
12V DC Fan 60 cm X 60 cm X 25 cm (Mouser, Digi-Key, Radio Shack)
Knob to fit potentiometer shaft (Mouser, Digi-Key, Radio Shack)