Can yo use this type of conductive ink to cut glasss in the microwave?

I would not put this in the microwave.

Could this be used to repair electric circuit in a car?

Yes, I used it to repair the circuit board on a dishwasher

Will this pen work in an upside down condition? For example, an angled rear car glass with a defroster broken trace.

If aesthetics are of little concern, this will probably work. What I would do is clean the broken trace with isopropyl alcohol 91%. Retrace with this pen, test, then apply 2-part clear epoxy over the retrace to protect it <important if you don’t want the morning dew to dissolve the ink the next day. you may have to lightly sand the broken trace beforehand if the ink doesn’t stick well also may have to lightly sand the protective coating of the 2 unbroken trace ends, so this ink will be able to conduct. It may be tricky using this upside down, in which case maybe dab the ink onto a small brush and apply that way.

Need to fix accidentally removed solder pads on car key fob is it possible to add actual solder after dry to connect thin wire?

The conductive ink isn't likely to take solder - you could just tape the wires down onto the ink lines, but not for permanent installation.

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Q: Need to fix accidentally removed solder pads on car key fob is it possible to add actual solder after dry to connect thin wire?

The conductive ink isn't likely to take solder - you could just tape the wires down onto the ink lines, but not for permanent installation.

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⚡ Draw Your Future: Electrify Ideas Instantly!

NON TOXIC SAFE - Eco-friendly silver ink ensures safe use in classrooms and professional settings.
PRECISION CONDUCTIVITY - Achieve ultra-low resistance for reliable electronic connections every time.
LONG LASTING INK SUPPLY - Write up to 200 meters of conductive pathways—perfect for multiple projects.
INSTANT CIRCUIT CREATION - Draw fully functional circuits on any writable surface with ease.
KICKSTARTER PROVEN INNOVATION - Join thousands who backed the most successful conductive ink pen ever.

The Circuit Scribe Conductive Ink Pen by Electroninks Writeables is a silver-based, non-toxic ink pen designed to draw functional electronic circuits on virtually any surface. With ultra-low resistance (0.05-0.2 ohms/sq/mil) and the ability to write between 60 to 200 meters depending on the surface, it’s the go-to tool for rapid prototyping and educational projects. Backed by a record-breaking Kickstarter campaign, this pen combines precision, safety, and innovation in one sleek package.

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Manufacturer	Electroninks Writeables
Brand	Circuit Scribe
Model Number	CS-KS-PEN-1X
Colour	Silver
Closure	solder
Pencil Lead Degree (Hardness)	H
Number of Items	1
Size	1 count (Pack of 1)
Point Type	Ball
Line Size	1_0_1_9mm
Ink Colour	Silver
Manufacturer Part Number	CS-KS-PEN-1X
Manufacturer	Electroninks Writeables

Circuit Scribe Conductive Ink Pen: Draw Circuits Instantly, Silver

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