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MG Chemicals 841AR-P Nickel Conductive Pen, 7.5g
Purchase options and add-ons
- Creates durable, reliable, highly conductive connections
- Low volume resistivity: 0.0068 ohms·cm
- Typical trace width: 1.0 mm
- Dries to touch in minutes
- Adheres to plastics, epoxy, copper, aluminum, ceramics, wood, and most electronic substrates as well as ABS, PLA, and other 3D printing plastics
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Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 1.01 x 7.81 x 2.02 inches; 0.88 ounces
- Item model number : 841AR-P
- Date First Available : September 24, 2016
- Manufacturer : MG Chemicals
- ASIN : B01LYAA814
- Country of Origin : Canada
- Best Sellers Rank: #37,592 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #53 in Industrial Coatings
- Customer Reviews:
Product Description
The 841AR-P Nickel conductive pen is a highly conductive, fast drying paint in a convenient pen format. It quickly and easily creates durable, reliable, corrosion resistant, and highly conductive traces. It adheres to a wide variety of substrates. This product works best on smooth, flat, and hard surfaces. It has a Valve tip that opens when the pen is pressed against the surface to be drawn on and it has a soft tube, so the flow may be controlled by squeezing the center of the pen. It is used to draw traces on circuit boards or to create simple circuits on a variety of surfaces for prototyping, hobbies, or Maker projects. It can be used to repair damaged traces on keyboards, game controllers, remote controls, mixing boards, and pcb’s. Repaired devices may be returned to service in only 10 minutes. It is also great for making small connections in or between circuits such as jumpers, through-holes, bridges, and links. It is also good for increasing the surface area of contacts by painting the area around them. Also great for filling gaps in your EMI/RFI shielding. Attention! shake rigorously before use. For best results hold pen at angle, depress pen tip against surface, and draw pen across surface while gently squeezing middle.
From the manufacturer
838AR-P – Carbon Conductive Pen
A circuit repair pen that dispenses acrylic lacquer pigmented with conductive carbon. The cured traces are durable and corrosion resistant, with fair conductivity. They adhere well to plastics and most electronics substrates. The valve tip opens when pressed against a surface, and the flow is controlled by squeezing the barrel. The product works best on a smooth, flat, hard surface, but the cured traces are highly flexible.
This circuit pen fixes damaged traces on keyboards, game controllers or remote controls. It is also useful for making small connections, such as jumpers and bridges. It is great for drawing resistors and can be used to increase the surface area of contacts by painting the area around them.
841AR-P – Nickel Conductive Pen
A circuit board trace repair pen that dispenses acrylic lacquer pigmented with conductive nickel flakes. The cured traces are durable, corrosion resistant, and have good conductivity. They adhere well to plastics and most electronics substrates. The valve tip opens when pressed against a surface, and the flow is controlled by squeezing the barrel. The product works best on a smooth, flat, hard surface, but the cured traces are highly flexible.
This circuit trace pen fixes damaged traces on keyboards, game controllers, remote controls, mixing boards, and PCBs. It also creates conductive traces for prototyping, hobbies, or maker projects. It is great for making small connections in or between traces, such as jumpers, through-holes, and bridges. It can also be used to increase the surface area of contacts by painting the areas around them.
842AR-P – Silver Conductive Pen
A silver conductive pen that dispenses acrylic lacquer pigmented with highly conductive silver flakes. The cured traces are durable, corrosion resistant, and highly conductive. They adhere well to plastics and most electronics substrates. The valve tip opens when pressed against a surface, and the flow is controlled by squeezing the barrel. The product works best on a smooth, flat, hard surface, but the cured circuits are highly flexible.
This conductive pen can draw electrical circuits for prototyping, hobbies, or maker projects. It can also repair damaged circuits on keyboards, game controllers, remote controls, mixing boards, and PCBs. It can also make small connections in or between circuits, such as jumpers, through-holes, and bridges. As well, it can be used to increase the surface areas of contacts by painting the area around them.
Carbon
Nickel
Silver
Product guides and documents
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841AR-P Nickel Conductive Pen Unboxing
MG Chemicals
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers have expressed negative opinions about the ink flow and leakage of the adhesives and sealants. They mention that the inking of the pen is very unreliable and the inked is not conductive. Customers are mixed on performance, conductiveness, value, quality, and drying time.
AI-generated from the text of customer reviews
Customers are mixed about the performance of the adhesives and sealants. Some mention that it works pretty well, while others say that it didn't work.
"...Perfect for membrane trace repair!Adhesion is good on plastic. The output width is about 2mm...." Read more
"...board...I didn't get the board perfect as a few lines of the LCD display aren't working, but it at least turns on and works now...." Read more
"As described. Works like it should." Read more
"Worked perfectly to restore a short broken trace on the PCB of a music synthesizer keybed...." Read more
Customers are mixed about the value of the adhesives and sealants. For example, some mention it's well worth the investment, while others say it'll waste money.
"I love the brand but this is a very bad product...." Read more
"I'm very glad this product exists. Saved me hundreds of dollars!The material flows pretty well once you get the hang of it...." Read more
"...Very disappointing. Back to the soldering iron." Read more
"...I cannot resolve, its a useless product. gave them a second chance, and same crap.AND ITS NOT RETURNABLE? I DEMAND VENDOR CONTACT ME..." Read more
Customers are mixed about the drying time of the adhesives and sealants. Some mention that the ink dries almost instantly, while others say that it dried out without use. The product is conductive and driers are hopeful that it will last for some time. However, some customers report that the pen comes dried up and is useless.
"...the material sticks to the end of the knife blade OK, but it very quickly starts drying and develops a "skin" that tends to prevent it from flowing..." Read more
"...The paint will self level and dries quickly. Allow the paint to completely dry before reassembly...." Read more
"...It was not really easy to use as it dried up constantly. But in the end it saved our favorite remote." Read more
"I purchased this to repair a remote control's button. The ink dried within minutes and the repair was complete...." Read more
Customers are mixed about the conductiveness of the adhesives and sealants. Some mention that it is highly conductive, while others say that it's not conductive and doesn't apply to PCB boards.
"...Saved me hundreds of dollars!The material flows pretty well once you get the hang of it...." Read more
"...the multi-meter did not detect any amount of conductivity...." Read more
"Highly conductive...." Read more
"...It doesn't actually seem to be conductive at all. Maybe I got a bum pen but I can't make it do anything" Read more
Customers are mixed about the quality of the adhesives and sealants. Some mention it's good quality, reliable, and an excellent product, while others say that it broke down after a short period and doesn't last long. Some customers also mention that the pen arrived broken and spilled all throughout the packaging.
"The first pen that arrived had mechanical problems that made it useless...." Read more
"...This is an excellent product and is at a reasonable price especially for me since I was basically out of options...." Read more
"...I saw that the contacts were going bad so after looking at what to do, I found out I can restore them with this pen...." Read more
"Application was key fob buttons. Material broke down after short period and then proceeded to short contacts (button) on...." Read more
Customers are dissatisfied with the ink flow of the adhesives and sealants. They mention that the inking pen does not flow, the inked is not conductive, and the pen clogged almost immediately. The ink couldn't even carry a current strong enough to light a small led.
"...It can be a challenge to get the ink to flow but eventually it will.My PCB is saved thanks to MG Chemicals." Read more
"...At first, nothing came out of the pen, so I pressed the pen onto the surface and noticed the paint coming out...." Read more
"...But coating multiple times just gets the track a mess since the pen is not precise." Read more
"DO NOT BUY! I followed the instructions and after no ink came out I opened it to look for a seal...." Read more
Customers are dissatisfied with the leakage of the adhesives and sealants. For example, they mention that it leaks all over the place, the liquid comes out more in blobs than a line, and the tip moves in and out ok. Some say that the pen came broken and spilled all throughout the packaging. That said, some complain that the product doesn't work as expected and that the liquid just won't come out.
"...you are trying to apply the product and it is extremely hard to squeeze the little tube. But their flux and solder are really good." Read more
"...The capacitor on the controller board had leaked and dissolved the carbon traces for the buttons, so I purchased this carbon ink to see if I could..." Read more
"...for a very long period of time, I discovered that the alkaline had leaked from the batteries and eroded printed conductive strips (terminals)...." Read more
"...However, the product was very hard to squeeze out of the tube -- much more pressure than the instructions indicated...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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They're not the most intuitive to use, so you should make sure to try it out on a piece of scrap paper or something you're not afraid to ruin to get the hang of it. Always make sure to give it a good shake first (like a paint marker) and squeeze the body while laying the ink down. And if you mess up, even after it dries, it's easy to scrape away with something like a screwdriver or an exacto knife, at least on smooth plastic.
My picture is of some traces I repaired on a Model M membrane. I accidentally scraped them off while cleaning away a nasty stain and fixed it using this pen.
Reviewed in the United States on December 30, 2023
They're not the most intuitive to use, so you should make sure to try it out on a piece of scrap paper or something you're not afraid to ruin to get the hang of it. Always make sure to give it a good shake first (like a paint marker) and squeeze the body while laying the ink down. And if you mess up, even after it dries, it's easy to scrape away with something like a screwdriver or an exacto knife, at least on smooth plastic.
My picture is of some traces I repaired on a Model M membrane. I accidentally scraped them off while cleaning away a nasty stain and fixed it using this pen.
The material flows pretty well once you get the hang of it. It's similar to a paint pen, but with nickel in solvent. Let it dry! It wont conduct until the metal settles and the solvent dries. It was fun to use a multimeter and watch the resistance drop as the fluid cured.
I used this to repair a laminated keypad ribbon cable in a microwave that somehow got a melty trace. I also used it to repair the damage I did trying to fix the problem before i knew this product existed. It will now and forever be a part of my electronics kit. Perfect for membrane trace repair!
Adhesion is good on plastic. The output width is about 2mm. It's a fluid but not super runny, especially after the solvent flashes off. Build up a couple of coats for best conduction.
It takes a minute to get used to dispensing the material. The pen uses a plunger valve tip that has to be pushed against the surface before flow will start. You control the flow with how hard the tube is squeezed. Wiping the tip after every lift-up makes things go smoother.
Pro: Saved me a lot of money by not having to buy a replacement monitor for my rower.
Con: Difficult to use. Comes out in a thick line or blob that isn't detailed enough for use on a circuit board...I didn't get the board perfect as a few lines of the LCD display aren't working, but it at least turns on and works now.
Tips: Check each trace for continuity with a multimeter before assuming it is bad, there were several that were visibly corroded but still had continuity so didn't need repair.
After repairing a trace, if you still don't have continuity, check continuity to each side of your repair to figure out where the issue is.
Use something fine pointed like a toothpick to dab it where it needs to go and scrape off any excess.
After practicing drawing a bit on some regular paper, I cleaned the traces thoroughly, took a bit extra off the damaged sections and contact points and carefully applied the carbon ink. Most went on pretty easily (follow the instructions, they are helpful) however there were a couple spots where I flowed a bit too much and had to clean / reapply. Overall, it took maybe 15~20 minutes to read the instructions, practice a bit and perform the repair / get it how I wanted it (this being my first time using conductive ink, so next time it shouldn't take as long). My repair is barely noticeable!
Most importantly... I let it dry for 10 minutes and tested everything out, and all buttons worked perfectly!
This stuff is a God send. Follow the instructions and it really isn't difficult to properly apply... Make sure you thoroughly clean any surfaces you plan to write on, and remove a bit extra from damaged sections and contact points of existing traces, squeeze the pen firmly but not excessively while applying pressure to the ball point and use deliberate motion...
Great product!
I used it to draw a missing trace on a PCB. It won't be as pretty as a manufactured trace but it will do the job.
It can be a challenge to get the ink to flow but eventually it will.
My PCB is saved thanks to MG Chemicals.
Top reviews from other countries
Reviewed in Canada on August 18, 2022
Laid it on fairly heavily over a broken trace for the keyboard membrane. Testing conductivity a few hours later it did not look promising. Testing provided no improvement. So I put it in to the pile of disappointment and sorrow. A few days later I thought lets try it again but low and behold it was working! I guess it takes a few days to properly cure.
Phew. £140 saved!
But when I used it, soon the tip got blocked and no more ink was flowing. So I had to cut open the body and use a small stick to scoop the ink and paint.
However, ink is good, dries fast, sticks well on plastic surface.
I ordered it to repair keypad of an old spectrometer. We saved around 1-2,00,000 rupees.
Reviewed in India on December 31, 2019
But when I used it, soon the tip got blocked and no more ink was flowing. So I had to cut open the body and use a small stick to scoop the ink and paint.
However, ink is good, dries fast, sticks well on plastic surface.
I ordered it to repair keypad of an old spectrometer. We saved around 1-2,00,000 rupees.