Kindly Morrow
60/40 Rosin Core Solder Wire, 0.8mm, 1lb
Lay down clean, shiny joints without fighting your materials. The 1.7% rosin flux core activates on contact, displacing oxidation and pulling solder into the joint without a separate flux application. A full pound on one spool means you finish the project.
The 60/40 tin-lead alloy melts across a forgiving 183-190°C range, giving you time to reposition before the joint freezes. At 0.8mm diameter, it feeds cleanly into standard through-hole pads and larger SMD footprints without flooding. Classic formula, proven workflow.
Things to build with this
- Hand-solder a full 60-key mechanical keyboard PCB from scratch, placing every switch and diode. The 1 lb spool gives you room to dial in technique on the first rows and still finish clean. The 0.8mm diameter feeds precisely into switch footprint pads without pooling.
- Build a through-hole synthesizer voice board with discrete components, potentiometers, and DIP ICs. The wide 183-190°C melt range is forgiving when working across large ground planes and mixed pad sizes where heat soak varies significantly.
- Rework a batch of vintage audio gear or aging consumer electronics. The 60/40 formula matches original solder chemistry from that era, so blending new joints into existing ones looks and measures clean instead of creating visible cold-joint boundaries.
Key Features
- 60/40 Sn/Pb alloy: melts at 183-190°C for a wide, forgiving working window
- 0.8mm (0.031") diameter: suited for through-hole leads and larger SMD pads
- 1.7% rosin flux core: activates automatically, no separate flux needed on clean surfaces
- 1 lb (454g) spool: enough for hundreds of boards, repair sessions, and practice runs
- Produces bright, low-resistance joints with strong wettability
- Compatible with all standard soldering irons and stations
- Ships from US warehouse: no extended international transit times
Frequently Asked Questions
Is this solder RoHS compliant?
No. This is a traditional 60/40 tin-lead formula and is not RoHS compliant. It is not suitable for products intended for EU sale under the RoHS directive. For lead-free work, look for SAC305 alloy solder instead.
Do I need separate flux with this solder?
Not for most work. The 1.7% rosin core handles light oxidation on clean pads and fresh component leads. For heavily oxidized or aged parts, adding a small amount of paste flux will help considerably.
What iron temperature should I use?
315-370°C (600-700°F) works well for most joints. Large pads, thick wire, and ground planes benefit from the higher end of that range. Start at 330°C and adjust from there.
Why we stock this
Curated by Kindly Morrow. We test and vet every product before it hits the store. If we wouldn't use it in our own builds, we don't sell it.
Things to build with this
Fun projects to try once you get your hands on it.
Connect it to Home Assistant
Most hardware plays nice with Home Assistant. Add it to your dashboard, write an automation, and make your home a little smarter.
Hook it up to Claude
Wire it to an API, point it at Claude, and let AI decide what it does. The future of hardware is firmware you didn't write.
Give it to a kid and watch what happens
Half the fun of hardware is watching someone else figure it out. No instructions, just vibes.
