Kitpedia

Solder & flux

Electronics

Rosin-core solder and a bit of flux — the consumables every joint needs.

Approx. cost
$6–$25
Weight
2–6 oz
Used in
3 kits

Purpose

Supply the filler and wetting agent that make a clean electrical joint.

Used in kits

Alternatives

  • Solder paste— For surface-mount work; needs different technique.

Maintenance notes

  • Keep flux capped; it dries and gets gummy.

Buying considerations

  • A thin diameter (0.5–0.8 mm) suits small electronics.
  • A flux pen is cleaner in a field kit than a tub of paste.

⚠️ Safety notes

  • Solder fumes are irritating — ventilate, and wash hands before eating, especially with leaded solder.

Page history & editing

Revision status: approved Last edited 2026-07-01 by human editor