First-Aid Kits for Circuit Boards ®
Newsletter | Ordering | Login
Phone: 978-373-1600
  

2.6.2 Legend Marking, Hand Lettering Method

  • This method can be used to add, change or replace legend and markings on printed boards using epoxy ink and a pen to hand letter the legends on the printed board surface.
  • Apply legend using a wood stick dipped in epoxy ink.
  • Completed legend repair.
Outline
This method can be used to add, change or replace legend and markings on printed boards or printed board assemblies. This method uses epoxy ink and a pen to hand letter the legends on the printed board surface.

Minimum Skill Level - Intermediate
Recommended for technicians with skills in basic soldering and component rework, but may be inexperienced in general repair/rework procedures.

Conformance Level - High
This procedure most closely duplicates the physical characteristics of the original, and most probably complies with all the functional, environmental and serviceability factors.

Acceptability References
IPC-A-600 2.0 Externally Observable Characteristics
IPC-A-610 8.0 Marking
Procedure References
1.0 Foreword
2.1 Handling Electronic Assemblies
2.2 Cleaning
2.5 Baking And Preheating
2.7 Epoxy Mixing and Handling
IPC7721 2.6.2 Legend/Marking, Hand Lettering Method
Tools and Materials
CircuitMedic Part
Alcohol Swab
Self-saturating Isopropyl alcohol swab. Squeeze handle to release alcohol.
CircuitMedic Part
Cleaning Brushes
Disposable brushes for use with solvents for cleaning and application of coatings.
CircuitMedic Part
Circuit Bond Packs
Clear, superior strength epoxy in two-compartment plastic packages
CircuitMedic Part
Knife with #16 Blades
A must-have tool for precise cutting, scraping and trimming.
CircuitMedic Part
Mixing Picks
Unique mixing sticks have a paddle shape on one and sharp pick on the opposite end.
Images and Figures
2.6.2 Legend Marking, Hand Lettering Method
Damaged Legend
2.6.2 Legend Marking, Hand Lettering Method
Figure 1: Apply legend using a wood stick dipped in epoxy ink.
2.6.2 Legend Marking, Hand Lettering Method
Figure 2: Completed legend repair.

Procedure
  1. Clean the area.
  2. Scrape off any remaining character or legend with a knife and clean the area.

    Caution
    Abrasion operations can generate electrostatic charges.
  3. Mix the epoxy ink. White is the most common color.
  4. Sharpen a wood stick and dip the pointed end into the epoxy ink. Hand letter the legend or markings as needed.
  5. Cure the epoxy ink per the manufacturer's instructions.
Evaluation
  1. Visual examination for proper characters, positioning and legibility.
Procedure for reference only.
 

Related Products

115-1322 Circuit Bond Kit
Kit containing packages of clear, low viscosity, superior strength epoxy for circuit board damage repair.
Color Agents
One part, air-drying, semi-paste ink for printing on hard surfaces and used to tint the color of epoxy.
Do Your Repair Techs Deserve One?
Do Your Repair Techs Deserve One?
The Micro-Drill is the ideal tool for precision drilling, grinding and cutting on circuit boards. Use it to remove coatings, cuts circuits, drills holes, and much more.
Learn more ...
Discover 3 Options for BGA Rework
Discover 3 Options for BGA Rework
No matter how much we attempt to streamline and automate the process, BGA Rework has been, and will likely always be, a mixture of art and science.
Learn more ...
Must Have Circuit Boards First-aid Kits
Must Have Circuit Boards First-aid Kits
These kits have been used for decades by the most demanding electronics manufacturers. Every item is thoroughly field tested.
Learn more ...
Stop PCB Scrap Today
Stop PCB Scrap Today
What happens to your valuable circuit boards when they're damaged? Can they be repaired reliably and cost-effectively? Yes, if you have the skills and knowhow.
Learn more ...
ipc-logo Circuit Technology Center has been an IPC member since 1986
Circuit Technology Center Logo
Surgeon grade rework and repair,
by the book and guaranteed. ®