CoolLaserUser
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- Joined
- Jul 31, 2024
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My Sanwu pocket laser pointer is a small blue powerful laser pointer that I have had since the beginning of this year.
It's one of the best and my favorite smallest powerful laser that I currently have.
The only thing I don't like about it is it's front focusing head due to many reasons
At the same time, I have come up with an idea of a project where I should make the front focusing head better in many ways.
To begin with, there is a problem with it's original front head.
When the blue beam shoots out of the aperture, it reflects inside of the front hole.
Due to the reflection of the hole, it creates these ugly wings that I really hate, and they are annoying since you can see them from a point even when your eyes are in line horizontally with the aperture.
When you look at the dot, it unfortunately has wings that look terrible.
However, I got an idea of making the hole of the focusing head bigger so the laser beam can only reflect inside of the lens instead of the hole that creates these ugly wings.
This would also help me to adjust and change the laser lens easier.
To do the project, tools that were needed are a file, pipe cutter, drill, and a round file.
First, I fit a cheap plastic lens to prevent the metal particles from reaching the diode.
Next, I took a look inside of the focusing head to determine where I should cut the metal.
So I used the pipe cutter as a marking to see where I could file/cut the deepest, this to prevent messing up the threads of the laser lens. I couldn't cut the steel metal of the focusing head, but I used the metal line as a reference. Basically I couldn't use pliers to increase the cutting wheel tension, otherwise the laser host would have marks and dents from the pliers.
Instead, I unscrewed and removed the focusing head from the Sanwu laser, the lens was also removed.
I used a rough file and I would file the focusing head back and forth until it would reach the "metal limit". This took altogether an hour to do and I also literally exercised my right forearm at the same time!
My hand became tired and felt ached after that.
When I reached the limit, I used a drill and fit a 10 mm barrel to push the metal further inside. Then I used the round file to pile out and remove the metal layer. It almost looked like a dented washer. I used fine file to make the focusing head smooth and the round file to file it from the inside, without filing the threads of the laser lens.
After that, I washed the focusing head carefully with soap and water to remove any remaining metal particles, this to prevent ruining the laser lens and/or the diode.
After that, I was done and now I could fit a lens easier from the outside instead of inside of the focusing head which was super difficult back during the old days.
Finally when I tested the laser beam, it didn't reflect inside the hole; only the laser lens.
So these ugly wings finally disappeared and the dot looks so much better and cleaner nowadays!
When I fit the original lens, it did sit deep enough inside the focusing head and that meant I couldn't have a focusing ring. I had also planned to make the sanwu laser look aggressive, cooler and sharper. So I took a spare metal lens without glass, I fit it and glued it centered above the original lens. Since the remaining was outside the focusing head when the laser was focused (smallest dot) I was then able to fit a focus ring!
The new amazing appearance looked absolutely stunning and incredible of the Sanwu pocket laser pointer compared to before!
This concludes my DIY Sanwu laser project
Happy lasing!
It's one of the best and my favorite smallest powerful laser that I currently have.
The only thing I don't like about it is it's front focusing head due to many reasons
At the same time, I have come up with an idea of a project where I should make the front focusing head better in many ways.
To begin with, there is a problem with it's original front head.
When the blue beam shoots out of the aperture, it reflects inside of the front hole.
Due to the reflection of the hole, it creates these ugly wings that I really hate, and they are annoying since you can see them from a point even when your eyes are in line horizontally with the aperture.
When you look at the dot, it unfortunately has wings that look terrible.
However, I got an idea of making the hole of the focusing head bigger so the laser beam can only reflect inside of the lens instead of the hole that creates these ugly wings.
This would also help me to adjust and change the laser lens easier.
To do the project, tools that were needed are a file, pipe cutter, drill, and a round file.
First, I fit a cheap plastic lens to prevent the metal particles from reaching the diode.
Next, I took a look inside of the focusing head to determine where I should cut the metal.
So I used the pipe cutter as a marking to see where I could file/cut the deepest, this to prevent messing up the threads of the laser lens. I couldn't cut the steel metal of the focusing head, but I used the metal line as a reference. Basically I couldn't use pliers to increase the cutting wheel tension, otherwise the laser host would have marks and dents from the pliers.
Instead, I unscrewed and removed the focusing head from the Sanwu laser, the lens was also removed.
I used a rough file and I would file the focusing head back and forth until it would reach the "metal limit". This took altogether an hour to do and I also literally exercised my right forearm at the same time!
My hand became tired and felt ached after that.
When I reached the limit, I used a drill and fit a 10 mm barrel to push the metal further inside. Then I used the round file to pile out and remove the metal layer. It almost looked like a dented washer. I used fine file to make the focusing head smooth and the round file to file it from the inside, without filing the threads of the laser lens.
After that, I washed the focusing head carefully with soap and water to remove any remaining metal particles, this to prevent ruining the laser lens and/or the diode.
After that, I was done and now I could fit a lens easier from the outside instead of inside of the focusing head which was super difficult back during the old days.
Finally when I tested the laser beam, it didn't reflect inside the hole; only the laser lens.
So these ugly wings finally disappeared and the dot looks so much better and cleaner nowadays!
When I fit the original lens, it did sit deep enough inside the focusing head and that meant I couldn't have a focusing ring. I had also planned to make the sanwu laser look aggressive, cooler and sharper. So I took a spare metal lens without glass, I fit it and glued it centered above the original lens. Since the remaining was outside the focusing head when the laser was focused (smallest dot) I was then able to fit a focus ring!
The new amazing appearance looked absolutely stunning and incredible of the Sanwu pocket laser pointer compared to before!
This concludes my DIY Sanwu laser project
Happy lasing!
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