]How about you read that link instead of assuming it just goes to o-like's site?[/COLOR] It happens to be a link to a thread here, and at the end of that one, a link to yet another thread, in which at least two people people have scratch built green DPSS. Something not being hard to do, and people wanting to do it, are two different things. Remember, this is a pointer forum. A DIY green is neither going to be small enough, or portable enough, to be of much interest to in general to pointer people. PL is where you'll find much more interest in this, and thus, more scratch built builds, than you will here.
Your reasoning that 532 is not DIY because most people use premade modules in itself is also flawed.. after all.. Name me someone who's manufactured their own 405nm laser diode? Your beloved laser diodes are 'modules' just like the 532's are 'modules', they just happen to be a little smaller.
I still stand behind my belief that it doesn't take a physics degree to get green, especially if your using premade and coated crystals like the o-like ones. The guy in the thread I linked got green with them just sitting on his desk... after all. No fancy mounts. No tec's. just crystals, a pump diode, an OC, and some spacers, all sitting on the desk not mounted to anything.