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<!DOCTYPE html>
<html lang="en">
<head>
<title>IIDX Button Mod</title>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<meta name="description" content="" />
<link rel="stylesheet" type="text/css" href="assets/css/style.css" />
<link rel="icon" href="assets/img/favicon-32x32.png">
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<div id="page">
<div id="container">
<h1>IIDX Chinese Pushbutton Sanwa Mod (Chanwa)</h1>
<hr>
<p>
Don't have enough money to buy yourself a set of Sanwas? Can't be bothered to order a set of Samducks? Then this little guide may help you get by with Chinese generic pushbuttons! Obviously these don't feel or sound as good as the real deal (OBSA-45UK), but this simple mod gives generic buttons a similar linear action to Sanwa. The sound of the buttons is still totally different, but that wasn't really in scope for this modification. I should mention that these are the generic button that Yuan ships with his controllers, but I'm pretty sure they're all the same. There's a video near the bottom showing the end result of the mod if you want to skip ahead!
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<p>According to a Discord user, this mod also works for SDVX (60x60mm) generic pushbuttons. I will also try this soon and add a couple of bonus SDVX mod pics at the end of this page.</p>
<p>The main differences in the feel between Sanwa and generic pushbuttons is the height the keys sit at when not actuated, and the distance the button travels before it even comes into contact with the microswitch. This also why Samduck buttons feel very close to Sanwa - because of the linear travel distance. Below you can see a generic button on the left, compared to an OBSA-45UK on the right:</p>
<div class="image-container">
<div><img src="assets/img/10.jpg"></div>
<div><img src="assets/img/9.jpg"></div>
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<p>The generic button sits a lot closer to the microswitch than the Sanwa. This is even an example of a generic button with a gap at all - most generic buttons I have seen are always in direct contact with the switch. This means Sanwa pushbuttons have a little bit more linear travel before they come into contact with the microswitch, which gives them their signature feel and satisfying sound.</p>
<p>So the idea of this mod is extremely simple - file the small gap where the plunger feet rest to allow the button to travel further, increase the gap between that and the switch, and enable the buttons to sit slightly higher to match that of Sanwa. Pictures below show a before and after of filing this little gap down. I used a tiny round file and it came out a little shoddy, so probably best to use a flat file instead... Also, be careful not to over-file or the buttons will sit too high.</p>
<div class="image-container">
<div><img src="assets/img/1.jpg"></div>
<div><img src="assets/img/4.jpg"></div>
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<p>Here's a side by side of the Generic after the mod and a stock Sanwa:</p>
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<div><img src="assets/img/6.jpg"></div>
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<p>... and also an after photo of the buttons from the top, showing the height of the new modified button:</p>
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<div><img src="assets/img/3.jpg"></div>
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<p>That's basically it! You can see the video below for an end result (and also probably explains the mod better than all the guff above). In the video, button 1 is modified Chinese generic with silent mod, button 3 is modified Chinese generic without silent mod, and button 5 is Sanwa OBSA-45UK. I didn't have the keypanel screwed down so annoyingly the quiet-modded button sounds super loud...</p>
<div class="video-container">
<iframe width="560" height="315" src="https://www.youtube.com/embed/h4YGpbp8wt4" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
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<br />
<p>Finally, if you want to make your buttons even quieter, you can just pop a couple of bits of material under each plunger. The material only has to be thin and makes all the difference!</p>
<div class="image-container">
<div><img src="assets/img/7.jpg"></div>
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<p>Have fun! :)</p>
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