The CAIG CW100P Circuit Writer Conductive Pen is a handy solution for quickly drawing or repairing electrical paths on a wide range of surfaces. Using a precision tip and fast-drying conductive ink, this pen lets you sketch traces on circuit boards, fix broken connections, create jumpers, and even restore rear-window defroster lines, making it ideal for on-the-spot electronic design, prototyping, and repair work.
Features
Conductive ink tip allows you to draw instant electrical traces on epoxy, glass, plastic, metal, and other common substrates
Enables quick repair of damaged circuit board traces and the creation of jumpers or custom pathways
Useful for designing and modifying prototype circuits without etching or complex tools
Suitable for restoring conductive paths in automotive rear-window heater/defroster elements
Fast-drying formula reduces downtime so circuits can be tested and used shortly after application
Compact pen form factor provides precise control for detailed electronics work
High-precision conductive ink for drawing electrical traces
Compatible Surfaces
Applies conductive paths to epoxy boards, glass, plastic, metal, and most other common substrates
Circuit Repair
Restores broken or damaged circuit board traces and creates jumper connections
Shielding Uses
Can be used to add or repair conductive shielding on electronic assemblies
Prototyping
Suitable for laying out prototype circuits directly on boards or test surfaces
Automotive Applications
Capable of repairing conductive paths such as rear window defroster / heater grid lines
Drying Time
Forms a usable, dry trace within minutes under normal conditions
Typical Use Cases
Electronic design, rapid prototyping, and general electronic repair work
Regulatory
California Proposition 65
WARNING: This product can expose you to chemicals known to the State of California to cause cancer. For more information, visit www.P65Warnings.ca.gov.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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