In fact, to make solder paste for the needs of radio amateurs, it does not take much effort, time and ingredients.
To make solder paste we need:
- Tin-lead solder rod;
- Medical Vaseline. Used as a thickener;
- Flux LTI-120 or other liquid.
I will make from these components. Ideally, it’s better to take:
- Tin-lead solder rod;
- Soldering fat. And if you find “active fat,” it’s absolutely beautiful.
How to make solder paste?
The whole process is incredibly simple.
We start by grinding the solder. I took a thick tubular piece and began to chop it up with a file, a needle file and a mechanical drill attachment. What you use is up to you. But I am for mechanics, since manual labor is too long and painstaking.
The smaller the crumb, the better.Small quantity required.
Then add Vaseline in a 1:1 ratio and a little LTI flux (these two ingredients can be replaced with solder fat).
Mix everything thoroughly.
For better stirring, the mixture can be heated in a water bath or with a regular soldering iron, reducing its heat to 90 degrees Celsius.
Next, for storage, transfer the resulting paste into a syringe with a thick specialized needle. Or no needle at all.
At this point the paste is ready for use.
Soldering paste test
Apply a little paste to the soldering area and solder with a soldering iron.
Everything is soldered very neatly and practically without streaks.
What kind of fluxes and solders do you make? Write in the comments, I will be very interested. Thank you!