Rolf said:Just now got around to check my max iron temp setting witch I have been using. The laboratory calibrated digital thermocouple fluctuated between 348°F - 355°F. I guess that Press-N-Peel is very forgiving temperature vice, since I have been using it well above its max recommended temp with excellent results.
UPDATE. After etching the PCB (before removing the P-N-P) I noticed some very small bubbles on the surface. And sure enough the etch was not 100% perfect. I will now calibrate my iron to around 300°F and lock the temperature dial in place somehow.