I bought 50W laser cutter / engraver. I believe it's either a Shenhui brand or a copy. It is no where near as powerful as I was led to believe. So I bought a Mahoney power meter and found the output is about 35W.

After using it for a year now, I have only just noticed on the power supply unit a sticker it says its for a 40W laser.

Should I have a 50W PSU? Maybe I bought a 40W laser which was claimed to be a 50W laser?

I am in discussions at the moment with Shenhui about buying a couple of 60W tubes and a 60W PSU but they never say the PSU is 60W they deflect all the time and just call it a PSU or compatible PSU..

I can't find any definitive answers on this forum about the size of the PSU c/w the wattage of the tube.

Can someone please clarify?

(PS they are quoting, $110 USD ea for the tubes, $90 USD for the PSU and $430 USD to deliver the 2 tubes + 1 PSU via DHL to Melbourne Australia in 3-5 days - is this a good price?)