Autunite specimen from China
l.i.papadopol
Recently I’ve bought a little specimen of Autunite from China. My sample is 20mm in lenght, 15mm width and 6mm thick with nice green lamellar crystals. I’ve bought it from…
2018
NER10 X-Ray generator
I’ve bough from eBay a NER10 X-Ray generator tube. It was build in 1925-1930 I don’t know exactly when. It’s interesting to see how well made it is also, It’s…
PRT-E750W & PRT-E1500W vfd settings
How to set correctly the PRT-E750W and PRT-E1500W (are equals except for the power capability) VFD supplied with CNC 3020 and CNC 6040 chinese routers. Click to download: PRT-E1500W vfd…