I use no-name LED/CCTV PSUs bought on eBay. The photos look identical to the ones on Stepperonline, but the prices are lower.
It's hard to find a power brick with a power rating greater than about 100W. To prevent users from touching the mains terminals, my delta printer has the POSU under the (fixed) bed, see link in my signature to my blog. For the other one, I printed this cover: [www.thingiverse.com].
The PSU rating you need depends on a number of things, in particular on your bed heater power and whether you want to support dual extrusion with 2 extruder heaters.
Unless you want to print high temperature plastics such as nylon, I advise against using a 40W heater with an E3D or similar hot end. In the event of a heater malfunction, a higher powered heater will cause more damage. I use 30W heaters.
It's hard to find a power brick with a power rating greater than about 100W. To prevent users from touching the mains terminals, my delta printer has the POSU under the (fixed) bed, see link in my signature to my blog. For the other one, I printed this cover: [www.thingiverse.com].
The PSU rating you need depends on a number of things, in particular on your bed heater power and whether you want to support dual extrusion with 2 extruder heaters.
Unless you want to print high temperature plastics such as nylon, I advise against using a 40W heater with an E3D or similar hot end. In the event of a heater malfunction, a higher powered heater will cause more damage. I use 30W heaters.