Hi Robert, I have a manual operated 3D machine at home already, being a cheap hotmelt glueing pistol. So I was thinking of buying a CNC machine to be able in producing pcb electronic boards. A 3D machine is nice to build puppets and stuff but can't normally make pcb's. But there are machines from a certain firm that can do both because of the detachable Head.

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Thanks for your comment Edd. I seems that the Red and Black wires were stretched causing the broken wiring. There was no indication of poor continuity causing arcing and eventual break down. It appears more of a mechanical damage than a electrical fault. This unit has been operating for over 2 years now without any failure (I only found this article I started writing the other day) and so I feel that it is a successful repair.

He was happy to make a PCB holder for me and there is plenty of free designs out there. I personally chose this one due to its sturdy design and was there during the making process. It has turned out to be a very useful tool.
We have been using and teaching 3D printing at our college for about 4 years now. Replacement parts that have been made that are difficult to access and even a little statue of YODA! 3D printing is definitely the way of the future. You may be interested in the link below on Bioprinting.
http://www.theaustralian.com.au/news/health-science/absolutely-biofabulous-bioprinting-to-regrow-damaged-body-parts/story-e6frg8y6-1226919277874?nk=b608308261a657b438fc17067d33d2d8-1444338822
Australia is one of the world leaders in this area.
Amazing technology!
Thanks again for your comments

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But in now having viewed the wiring (the end RED and Black) their appearance, particularly the RED one suggest of overheating to melt the insulation to some degree.
Any chance that you know/knew the current/wattage being pulled by the heater unit.
And could it be on up in the HIGHER amps, such that poor connectivity to that crimp connector might have lead to progressive oxidation of the connection, with progressively less contact area such that it created enough heat to cause some melting of the insulation around it and an eventual open connection.
After some operation time with heater activated, do those wires exhibit any heating when touched with a finger ?
In a LOOOOONG time condition like this, the Delrin/nylon/plastic insulator takes on a discoloration, which yours is not showing.

That massive board holder and its solidity and its appearance seems to be a product of his using quite a bit of his time machining it from stock , and NOT being a 3-D printing task.

Edd

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Best Regards

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