Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers

So after having my laserbtb order seized by customs today I've decided the DIY route might be best

Gonna start out real simple. I'm looking at getting one of these 510 threaded modules from DTR. Which is perfect for the mech mods I already having laying around.

My question is, do I still need or should I get a glass lense w/ focus ring?

The module I'm considering is the 2W M462 22mm Module W/1.8A X-Drive & 405-G-2 Glass Lens
https://sites.google.com/site/dtrlpf/home/diodes/m462-462nm-laser-diode

Edit:

I can't seem to find much about these modules. Do they need heatsinks? What kind of duty cycles might I expect?

Anyone have any experience with these modules?

I'm also considering the more powerful module
https://sites.google.com/site/dtrlpf/home/diodes/9mm-445nm