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All you need is a CD case, and you get a perfect circular aiming dot :)
Have fun making!

Step 1: Tools and Material

All you need is:

- small saw

- glue

- dremel tool (a hot nail can poke a hole in that too)

- old CD case (maybe 2)

- 3V button cell

- LED (blue LEDs run on 3V, so no other parts needed!)

- pair of pliers or something 90°angled to bend the main part, plus lighter

Step 2: Step by Step Video

THE STEPS:

1. Print and cut out the template (cardboard will work best, paper is too thin)

2. Place it on the clear CD cover, and grab a marker

3. Works best with a small saw: Cutting it out

4. Mark a stripe of 4cm in the center

5. Use a pair of pliers and a lighter to bend it by 90° on each side

6. Cut out 2 L-shaped edges (from another clear CD case lid)

7. Glue them onto the first part.

8. Make the 4 cm wide, 9 cm long centerplate (same clear plastic) and glue it on the L-pieces

9. Grab the black disc-holding part cut out a piece as shown in the video and glue it to the rear

10. Make 2 side plates, and glue them on

11. Glue in a tiny L-plate to make sure, the battery is held in place, same for the LED

12. Glue on a stripe of the clear stuff to cover the LED and battery

13. Time for paint, tape off the exit hole and rear section...then cover it in black, 2-3 layers.

14. Glue in the display and done :)

What's the measurement on the template
Mine was around 35-40mm wide...print it and enlarge. Or enlarge and then print :p
<p>please can you send me the plans by email please i cant dowload it </p><p>email : makucho02@hotmail.com</p>
All you need is the Video.
<p>tanks</p>
Awesome idea, works great!
<p>*brofist*</p>
Is there any way to magnify this sight?
<p>If you have lenses and the knowledge on how to space them to magnify stuff, then sure. i would recommend just using it mounted in front of a preexisting scope. if anything, use google cardboard lenses, or you can break open an old telescope or monocular and use those lenses and just mount one lens directly in front of or on the plastic where the dot is located. now move the second lens around ahead of or behind it until it focusses. if there are more lenses, repeat. this should magnify it. not the best way to do it. Like i said, use it as is and use an existing scope</p>
<p>If you have lenses and the knowledge on how to space them to magnify stuff, then sure. i would recommend just using it mounted in front of a preexisting scope. if anything, use google cardboard lenses, or you can break open an old telescope or monocular and use those lenses and just mount one lens directly in front of or on the plastic where the dot is located. now move the second lens around ahead of or behind it until it focusses. if there are more lenses, repeat. this should magnify it. not the best way to do it. Like i said, use it as is and use an existing scope</p>
Dont think its that easy, but not impossible either.
<p>Clever! Love it.</p><p>Good job.</p><p>:D</p>
Thanks.<br>Keep an eye on my channel, simple but unconventional bow next.
How in the the heck do I watch videos?<br>
<p>If you are using the app this sometimes doesn't work with videos. Desktop version they work fine...</p>
You click NEXT STEP and just watch it?
<p>I have a green led I might try this with</p>
Go for it. Dont forge: It might need a resistor.
<p>NI\ice job! what exactly are you using it for?</p>
Follow me and youll see :) probably some selfmade weapon Im gonna make soon, including a simple rail for the lil buddy here.
This isn't a true reflex sight but it still looks like one. True reflex sights use a curved clear material that reflects the led so you don't need your head in a specific position to live up with a target
Sigh
<p>This is a great reflex sight for a cosplay but I think I'd use a red LED and maybe wire in a off switch but as for simple goes it's great might try to fit it into a prop gun I make sometime. </p>
Go for it. You will need a resistor then, and in case its a regular LED, it will not be as bright. But regular LEDs will do the job also I guess.
Yeah I figured I'd need a resister but a super bright LED is cheap so that's not an issue.
<p>I had to read the comments before I could understand what this is actually for.. Duh! Anyway, nice work. Got me wondering if I could use a variant of this to &quot;target&quot; a drill on a stand without the light having to shine on the work-piece? </p>
<p>Interesting idea for an instructable. Maybe you could use two slot laser pointer thingies to make a cross.</p>
<p>Yep.</p>
Thanks, but I dont think this will work for you ^^
Well its the last one you get from me dude....because you seem you dont even understand what I am trying to tell you. Nevermind. Its physics, physics is not for everyone.<br>Beside that...it says SIMPLE, how can you expect a high end sight? Spend more time MAKING stuff instead of talking about other peoples stuff...another argument you cant beat. Have fun making.
<p>Nice job, but what you have made there is a toy, or a prop, it lacks the actual function of a reflex sight, which is parallax correction.</p><p>Time spent discussing vs MAKING is well spent if it stops you wasting time making something which doesn't work. It's like &quot;measure twice, cut once&quot;.</p>
Dude.....it says SIMPLE. You are not a maker, so make a better one, same simple material...then you can give it to me :p Or is it jealousy? Because you cant be serious.
<p>I'm not knocking your making, I just don't think a reflex sight CAN be made simply. There's a difference between SIMPLE and NON FUNCTIONAL.</p><p>I don't have any ibles up, but trust me I am a maker, I'm mostly done on a cheap, simple to make, 'Hog Saddle' gun clamp. I may make that into an ible if it turns out well. I also recently made a robotic target setup controlled with an arduino, this one: <a href="http://www.youtube.com/watch?v=xU9IJjv8u4U" rel="nofollow">www.youtube.com/watch?v=xU9IJjv8u4U</a> excuse the video, but you'll get the idea.</p>
<p>Yup. this is cool. And physics IS for me. I hope to be as creative one day.</p>
<p>Great instructable!!, I just buy a chinese red dot.... I wish I saw this before. Its always better when you do it yourself.</p>
Thanks. Its really simple, so actually even the chinese sights should be better ^^
<p>Actually, it was not flat. That was the protective cover. </p>
<p>Real reflex sights have curved screen...</p>
<p>Not necessarily, I shot field target rifle for years, none of the reflex sights I ever used were curved.</p>
<p>as far as I know curved screen makes dot focus at infinity so cheap ones may have flat screens...</p>
<p>The ones I was using weren't particularly cheap I have to say.</p>
<p>This is sorta true. We had EOTech sights on our M4s in Iraq. The &quot;reflection&quot; surface was flat. It is not a reflection though. It is a hologram made specifically to put the dot at the correct position for your viewing angle. Wiki: reflex sight (lenses) and holographic sight. There's quite a price difference.</p><p>It makes quick sighting very easy since you just have to put the dot on target. Ours ran about $500 a piece, were anodized aluminum, and were fairly accurate (I wouldn't recommend shooting qualifications at a sharp viewing angle or setting the iron sights off the dot; setting the dot off the iron sights worked fine).</p><p>The holograms were lit with a solid-state laser. They have a narrow enough band to make it work (but not narrow enough to create the hologram - probably used HeNe, Ar, or ruby). Regular LEDs are nowhere close to monochromatic so a reflection surface is about as good as you will get - it should be plenty accurate for say a squirt gun, probably could be aimed for narrow angles for BBs, probably a bad option for pellets.</p>
<p>Partially true. EOTech is a whole other story so let's leave it out. laser is best because it only emits one wavelength and is easier to coat reflection surface so that it lets all other wavelengths pass through and use minimal power.</p><p>Curved glass only puts the dot at infinite distance so that it is easier to look at target and reticle without eye adaptation.</p>
I dont really think its too bad, because you have to line up with the target, eye wise. Why would it help to look at it from an angle? You cant aim that way anyways...I just wanted to show something cool but simple. I could go crazy and make a real one, but they could not copy it...no matter what you do, they nag about it :p
<p>Why would it help to look at it from an angle?</p><p>you do realize that looking from an angle is what reflex sights are made for, right? The point is that you don't have to look through scope with eyes aligned as perfectly as with iron sights a.k.a. from an angle</p>
<p>And they cost a average of 50$ for standard quality.<br><br>This probably cost you what? 5$ if you need to buy all the thing? i think for the difference in price you can live with with an uncurved screen or curve it yourself ;)</p>
not my point...<br>reflex sight / something similar<br>expensive / cheap<br>not a real reflex<br><br>funny how this comment is getting comments faster than my instructables...
I own several, and its not just curved. That would only work for the x-axis. Its a coated &quot;lens&quot;...
Nope, they have sort of e LENS as a screen, because bending it will just work for the horizontal/x axis, not for the vertikal y axis. Ok?<br>And it says SIMPLE....so come on....really.
<p>I don't agree with what you said but... ah well</p>

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