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I'm a spamming numpty who posts in the wrong section of the forum.
Marc, I completely agree with this.The problems arise from, quite simply- poor engineering, lazy assemblies (glue to hold essentail alignment optics) and alot of times, just plain and simple silly manufacturing processes.
From experience, I've found that some of the corners cut are to 'spite the face' (so to speak). As someone who wants a cheap laser, but also one that has some longevity beyond the warranty period, certain things like having adjustable optics mounts that allow them to be sorted at some non-specific time in the future when they 'do' go out of alignment is something that would be worth the few extra $/£ in the purchase price.
I'd like to hope that the manufacturers learn something from both user feedback and that which they receive from the distributors/service aganets, because it does leave users feeling like they may be buying into a product that has a 1 year lifespan, and after that its difficult to do anything with it unless you pay for someone with the right skills to deal with it. Lets face it, a moderate power non-dpss laser isn't all that complex these days.