by rswarner » 2012-Dec-Wed-12-Dec
My HBP cable failed at the KK connector. I think it happened this way: my first attempts to print had me setting the bed temp in Pronterface to 110 C as recommended. Since I hadn't yet looked at my real world offset between set temp and actual, I was unwittingly asking for a real temp somewhere above 140 C. It took a long time, but I eventually saw 110 C in Pronterface. When the print wouldn't stick, I started taking some measurements with an IR thermo. I realized the issue, and had success printing with bed set temps between 75 and 80 C. Many hours of printing later, while trying to mitigate some unevenness in the heat output of the bed, I noticed some ugliness at the connector. Thankfully, I had ordered some spare parts per the list above (thanks for that!), and was able to reterminate my cable.
Here are my questions: is it possible that the damage shown below was a progressive kind of failure, precipitated by my initial overheat?
Since the crimps shown (originals sent with my Printrbot+) are a different style from the type called out by Iwalkera, can someone clear up for me which of the two is the high current type? The single wiper type listed above is made of heavier guage material, but the originals in the picture seem to make contact over a larger surface area. Anyone?
Thanks!
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