I reckon this topic could be a forum in its own right.
I bought a Redsail laser (90W RECI W2 CO2) from an eBay site in China, knowing full well that I’d get what I paid for and some mucking around would be necessary. That said, I’ve been very happy with what turned up. A couple of little “huh?” observations, but in general I’m stoked.
Now for the mucking around. After a week of pottering around doing material tests and a couple of little projects I realised the power was fading. Pretty quickly.
The eBay vendor was adamant it was a mirror problem and I couldn’t convince her otherwise. Finally I sent a video of the machine not burning a hole in a piece of paper stuck right at the end of the tube. At last she was convinced.
Now the story became “Smash the tube, send me a picture and I’ll send you a refund for the tube”. How much of a refund, I asked? “Oh, sorry, didn’t I say? $120 (USD)”. ($120 was what I paid for the 80W noname tube to be upgraded to a 90W RECI). I let her know that the price of a RECI W2 in Australia is $1100 (AUD) - I haven’t heard back.
Now, if the tube is knackered I’m happy to smash it, but it seems to me that I’ve gone from “definitely a mirror problem” to “definitely a tube problem” with no consideration of other possibilities. Could it be a PSU problem? “No no, smash the tube”.
Now, my suspicious mind can see all sorts of problems with this. It’s in her interest to do a warranty claim if what she gets from RECI is more than what she’s prepared to refund me. Also, how do I enforce the refund? She can’t make a claim until I’ve demonstrated that the tube is ruined.
Any suggestions, kind folks?
(EDIT) I should also say that I’ve been pretty happy with both the machine and the service from this vendor - up until the $120 refund offer that is, that’s clearly dishonest.