Initial import of kweld info

src/equipment/kweld_spot_welder/README.md

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+# KWeld spot welder
+
+The KWeld spot welder is ideal for welding up Lithium Ion Batteries (eg 18650) cells into battery packs.
+
+Makerspace has the full mains powered version (donated by David Pye).  It consists of the KWeld device, the kSupply PSU adaptor and the KCap supercapacitor bank to provide the power for spot welding.
+
+It is capable of spot welding up to 0.3mm Nickel strips.
+
+The space has a small amount of 0.2mm nickel strip, some spot-weldable battery tags as well as the paper discs to be fitted under 18650 cell ends to reduce the shorting risk when packs are assembled.
+
+## Essential Information
+
+- Location: Ground Floor Workshop
+- Responsible Person(s): David Pye
+- Induction Required: Yes
+
+## Safety information
+
+- Welding Li cells can cause fire - LiIon cells can combust if shorted or if damaged
+- If you are **not sure what you are doing**, please get supervision/advice before using
+- RTFM (read the manual) - link below in the Useful links section, before using the device
+- Device generates very strong magnetic fields when welding. Do not use if you have a cardiac pacemaker or other implanted medical devices
+- Use an appropriate pulse strength (in J) for what you are welding - be aware that LiIon batteries can explode if damaged
+- Take safety precautions - eg bucket of sand nearby in case a battery becomes damaged and causes a fire
+
+### Useful links
+
+[kWeld user manual - **PLEASE READ ME BEFORE USING DEVICE**](https://www.keenlab.de/wp-content/uploads/2018/07/kWeld-operation-manual-r3.0.pdf)
+[kCap user manual - for troubleshooting](https://www.keenlab.de/wp-content/uploads/2022/12/kCap-manual-r2.0.pdf)
+[kSupply user manual - for troubleshooting](https://www.keenlab.de/wp-content/uploads/2019/06/kSupply-manual.pdf)