- Joined
- Nov 10, 2008
- Messages
- 4,186
- Points
- 63
So I decide it is time I begin my 2 W 445nm build. I had this spare cpu heatsink ( 1336 socket ) laying around, so I thought, why not turn this into a massive heatsink for a 445 diode? I then sent the hs to Pontiac5 for the cost of shipping both ways and he drilled it for no cost. Just letting you know how kind the guy is Yes it might be easy for some to make a simple hole but I heard copper is difficult to work with, so, thumbs up for this guy Here's how it was before and after it was machined.
Today, with the help of some friend and my dad, we worked on something to hold the heatsink in place and is quite steady. I got a lot of pics since it was something I came up with and found it quite strange to do, but it turned out to be very efficient. My dad had a workshop in our basement years ago, with lots of tools, so it was a piece of cake for him to cut me a fine block of wood to mount everything on it. We used 2 mounts to hold the HS so it wont move forth and back and 2 other plates which fit between 2 of the heatsink fins ( that keeps the heatsink from moving up and down. In fact, the heatsink ended up staying on air ). Finally, with the use of some random sandpaper, here's what the setup looks like.
videos:
Since my machining skills are not that good, I let my friend drill the wood and plates so we could attach the screws. Now the tricky part is on me, to find an efficient way to feed the diode ~1.8 amps with an input of 12 V.Since this laser will have no duty cycle, batteries won't be efficient and will drain very fast. The psu I will use can deliver up to 5 A and has an output voltage of 12 V as I said. I need to drop that voltage to ~6 V so I can use some kind of driver with fixed current. Now this is where I need some help with. I would prefer to do with this cheap components that I can get at a locale store ( lm317, resistors etc ). Please let me know what you guys would do accomplish the aforementioned. If you have a good idea on a driver as well, that is more than welcome too. But for a start, I need to get rid of those 6 Volts :evil:
Today, with the help of some friend and my dad, we worked on something to hold the heatsink in place and is quite steady. I got a lot of pics since it was something I came up with and found it quite strange to do, but it turned out to be very efficient. My dad had a workshop in our basement years ago, with lots of tools, so it was a piece of cake for him to cut me a fine block of wood to mount everything on it. We used 2 mounts to hold the HS so it wont move forth and back and 2 other plates which fit between 2 of the heatsink fins ( that keeps the heatsink from moving up and down. In fact, the heatsink ended up staying on air ). Finally, with the use of some random sandpaper, here's what the setup looks like.
videos:
Since my machining skills are not that good, I let my friend drill the wood and plates so we could attach the screws. Now the tricky part is on me, to find an efficient way to feed the diode ~1.8 amps with an input of 12 V.Since this laser will have no duty cycle, batteries won't be efficient and will drain very fast. The psu I will use can deliver up to 5 A and has an output voltage of 12 V as I said. I need to drop that voltage to ~6 V so I can use some kind of driver with fixed current. Now this is where I need some help with. I would prefer to do with this cheap components that I can get at a locale store ( lm317, resistors etc ). Please let me know what you guys would do accomplish the aforementioned. If you have a good idea on a driver as well, that is more than welcome too. But for a start, I need to get rid of those 6 Volts :evil:
Last edited: