The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

OMTech Laser: It Was The Focus Pen Wire

,

Because the focus pen worked on the bench, I was certain this had to be true:

OMTech focus pen - failed 24V wire
OMTech focus pen – failed 24V wire

There is a break somewhere along the blue wire carrying 24 V to the focus pen. The signal and 0 V wires are fine.

I updated the original post, because I’m going to use that picture a lot whenever the subject of laser machine wiring comes up.

Comments

2 responses to “OMTech Laser: It Was The Focus Pen Wire”

  1. RCPete Avatar
    RCPete

    This brings back fond(?) memories of college days. The apartment for four of us had one telephone (circa 1973, so that was the limit), so for *those* phone calls, we had a 50′ extension cable for the phone. Not terribly expensive, though compared to our budgets, expensive enough.

    When it failed, we had a minor quandry, until the roommate who was headed for RF work mentioned he had access to the college TDR (time domain reflectometer, milspeek Cable Radar). He hooked up the cable, ran his finger along it to change the point impedence, until the spikes coincided. A few minutes with solder and tape, and we had a working cable. Cost, effectively zero, since at least two of us had the tools and supplies.

    1. Ed Avatar
      Ed

      Ya gotta have tools and a TDR is definitely high class.