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How to Make a 1-Sided PC Board
These instructions are to be used to make fine resolution printed circuit boards by means of a photographic process utilizing a positive working photo resist.
BE SURE TO READ THE ENTIRE INSTRUCTIONS THOROUGHLY BEFORE PROCEEDING STEP BY STEP.
1. INJECTORALL TEST POSITIVE for practice in making your first board
2. 4" x 6" GLASS 2 pcs. to construct an exposure frame
3. FOUR METAL SPRING CLIPS to hold glass and positive firmly against the board
4. THREE 1-SIDED SENSITIZED BOARDS (2 boards 3x4.5" 1 board 4x6") to make printed circuit boards
5. PHOTO-FLOOD LAMP ( PC557 ) to expose board
6. DEVELOPER ( D3-6 ) to wash away exposed resist
7. TWO PLASTIC TRAYS to hold photo resist developer and etchant
8. ETCHANT ( PC199-6 ) to etch away unwanted copper
9. TWO FOAM SWABS to wipe down the boards
10. SCOURING PAD to remove photo resist after board is finished
11. .040" DRILL BIT ( PC300-60 ) to drill holes for components
12. PC 50A REUSABLE EXPOSURE GUIDE to determine proper time and exposure rate
13. PROTECTIVE GLOVES to protect your hands while handling boards and chemicals
14. INSTRUCTION SHEET to provide instructions on the recommended method to make a printed circuit board
CAUTION: Do not open the black pouch containing the sensitized boards until ready to expose to the light source. The positive developer should be premixed and ready to use at 68-72º Fahrenheit.
AVOID CONTACT OF ALL CHEMICALS WITH THE SKIN. PROTECTIVE CLOTHING, EYEWEAR, AND GLOVES ARE A MUST. EXPOSURE AND DEVELOPING REQUIRE SAFE-LIGHT CONDITIONS, (RED OR YELLOW LIGHT).
|I. SET UP POSITIVE|
|II. EXPOSE BOARD|
|V. REMOVE RESIST|
|VI. FINAL ASSEMBLY|
|VII. PROTECTING FINISHED SURFACES|
PRACTICE BOARD: To become familiar with the steps necessary to make a printed circuit board, we suggest that you make your first board for practice.
We recommend that you use a yellow or
red 25W bulb for safe-light conditions. We suggest that you wear nylon gloves so
as not to get fingerprints on glass or board.
NITRILE or rubber gloves as well as Safety goggles should also be used
when handling the chemicals in this Kit.
I. SET UP POSITIVE
II. EXPOSE THE BOARD
START SEMI-DARK CONDITIONS
III. DEVELOP THE BOARD
BE SURE TO WEAR PROTECTIVE GLOVES WHEN HANDLING DEVELOPER.
CONTINUE SEMI-DARK CONDITIONS
DILUTE DEVELOPER WITH SEVEN PARTS DISTILLED OR FILTERED WATER
IMPORTANT: DEVELOPER MUST BE 25º C ( between 68-72º F ) TO WORK PROPERLY
IV. ETCHING THE BOARD
CAUTION: Never use a metal tray, only glass or plastic. Severe burns can happen if aluminum is used.
AVOID CONTACT WITH SKIN. USE PROTECTIVE GLOVES, GOGGLES AND CLOTHING.
USE WITH ADEQUATE VENTILATION.
BE SURE TO WEAR PROTECTIVE GLOVES WHEN REMOVING THE BOARD FROM THE ETCHANT.
V. REMOVING THE RESIST
After etching the board, the copper traces will still be covered with the Positive Photo Resist. The Photo Resist may be removed by using a fine Scotch Brite pad ( part number PC-SB ). The Resist may be left on to prevent the copper from oxidizing until ready to mount the components.
VI. FINAL ASSEMBLY
VII. PROTECTING FINISHED SURFACES
After all components are soldered to the board, spray copper with a protective coating. This will prevent oxidation of the copper and will protect the mounted components.
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visitors to this page since Last Modified: November 18, 2003