Home PCB Etching with Toner Transfer

For single-layer boards with 0.8mm trace spacing and larger, toner transfer still works well at home. The process: print your layout mirrored onto glossy magazine paper, iron it onto pre-sensitized copper clad at 160°C for 60 seconds, soak in warm water to release the paper, then etch in ferric chloride with constant agitation.

The single biggest improvement I found was switching to magazine paper from a cooking magazine — the clay coating releases from the toner cleanly and you get sharp 0.6mm traces reliably. Photopaper tends to soak through and tear.

For drilling, a $30 mini drill press keeps holes perpendicular, which matters for through-hole pad alignment. Etching fumes are unpleasant — do it outdoors or under a fume hood. Dispose of spent ferric chloride properly by neutralizing with baking soda and letting copper precipitate.