

⚡ Solder smarter, not harder — the silver standard in every project!
Solder-It SP-7 Silver Solder Paste is a premium, lead-free silver solder flux designed for electronics, jewelry, and home repairs. Featuring a no-mess syringe for easy application, it delivers exceptional electrical conductivity and corrosion resistance. With tensile strength up to 25,000 PSI and a low melting point for smooth flow, it sets instantly to ensure durable, reliable joints without toxic metals.






| ASIN | B000OVI0IY |
| Batteries required | No |
| Best Sellers Rank | #6,756 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Soldering Flux |
| Brand | Solder-It |
| Customer Reviews | 4.0 4.0 out of 5 stars (671) |
| Item Weight | 0.64 ounces |
| Item dimensions L x W x H | 6.4 x 1.8 x 0.5 inches |
| Item model number | MSW-IS-SP-7 |
| Manufacturer | Solder-It |
| Material | Silver |
| Number of Items | 1 |
| Product Dimensions | 6.4 x 1.8 x 0.5 inches |
| UPC | 384920590606 |
P**5
Easy, fast, and cost effective way to repair a broken rear defroster connection.
Normally I don't leave reviews, but this product worked awesome. I have a 2014 Jeep Wrangler and the rear defrost cable is attached to the back window by a small metal button. The button can become detached breaking the rear defrost. It can't just be glued back because the button is conductive. I tried a silver impregnated epoxy, but it has to be mixed a certain ratio or it won't stick and it has to be heated to a certain temperature for a certain time. It held for about a year and came off. I asked at different glass places, but they only replace the entire nine hundred dollar window, they don't just fix the button. Someone suggested Solder-It as it is a metal solder and has silver in it so is conductive. I cleaned the attachment point and button, put enough Solder-it to cover the back of the button, stuck it to the glass. Then took my small pencil torch, and while holding against the glass with the drill bit so I didn't burn my fingers and heated up the button to melt the solder. It took a matter of seconds and it was melted all the way around. I held it with the drill bit while the glass cooled. I'm happy to say it is stuck tight. I was also able to test it in last nights snow storm and the rear defrost worked like normal. Didn't have to futz with mixing or heating at a certain temp for a certain time. I'm all repaired for the cost of the Solder-it. Which beats a $900 rear glass replacement. Hopefully it will last. There was enough left over to do it again or if the other side comes off. Super happy with the purchase.
T**S
Perfect application!
This worked perfect for soldering Jewelry!
D**D
A++++
A++++ Excellent product. Of course, good soldering skills will help. I am a very seasoned and capable electronics tech and this product nails it. I used it, also, to resolder a broken spit valve on my bass trombone. Worked perfectly. One note - the paste is fairly thick - so, once it starts coming out of the tube, back off the plunger so it doesn't continue flowing.
F**L
Practically an empty tube of product
A waste of money. Virtually no product at all inside the tube. Glad, I kept the packaging cause it's going back!
J**W
there is nothing else like it
Solder it is amazing stuff, easy to use and works great. A little spendy for the amount you get but fantastic solder and holds very well- a strong joint.
M**1
Not enough product in the tube to be helpful
I first want to say, I really like using this product. It’s a great way to solder and it’s rock solid without using traditional solder. CONS: the tube is about 4” long. You would expect the entire cylinder to be filled with the product. I’ve purchased 2 of these and both have very little product inside the tube. When opened, you have to compress the plunger almost all the way down, to get a small amount of solder/material to come out. I would expect to receive a full tube of product and the product to come out with a slight press of the plunger. With the small amount that is actually in the tube, the value of this product is fair at best. It’s much more economical to buy a spool of regular solder than to use this. If you have bigger soldering projects, you probably should pass on this product. Great idea, it works well but not enough to be helpful for any medium soldering needs.
I**�
Excellent value
Very easy to use
R**.
Good stuff
Good stuff
K**.
Almost impossible to use with a lighter. Using a butane torch is more feasible. Cannot control exact spot where the solder ends up because it tends to move around when it melts. After a few attempts my skills got better. The solder polishes well with jewellers rouge. Nice shiny surface. Good bond. Overall a very good product but be prepared to waste a lot practicing. Good luck.
A**R
Does the job
G**Y
Exactly as stated. Quick delivery
T**N
The syringe came empty, kept trying to push some Solder out but all that came out was a few drops of clear jell, pulled the plunger out and was able to use a screwdriver to scrape up a small amount of gray paste that I used to repair a broken temple Hinge on a pair of eye glass’s, (THE SOLDER PASTE WORKED GREAT) the repair was easy and held solid.’’ THE PROBLEM IS THAT THE SYRINGE COMES BASICALLY EMTY ‘’ just a few drops of paste not even enough to come out of the nozzle of the syringe.
S**R
good stuff
Trustpilot
1 month ago
2 weeks ago