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geekhack Community => Keyboards => Topic started by: xtrafrood on Sun, 03 April 2016, 07:33:41

Title: silicone spray to soften Topre domes?
Post by: xtrafrood on Sun, 03 April 2016, 07:33:41

Let's talk about rubber..

I poked around with google search to check the composition of Topre domes without much luck. My best guess is they're not silicone. I have a silicone keyboard from ten years ago, and the rubber has maintained the exact plasticity. From what I've read Topre domes stiffen after a few years.

I found a forum post on a random forum that explains how to use silicone spray to soften rubber. Has anyone tried this with Topre domes?   

Instructions mentioned: Drench the rubber with the silicone spray, and leave it in an airtight bag for 3-7 days

Source: http://www.mightyram50.net/vbulletin/showthread.php/2642-How-to-Soften-Old-Hard-Rubber (http://www.mightyram50.net/vbulletin/showthread.php/2642-How-to-Soften-Old-Hard-Rubber)

Topre Patent (ethylene-propylene-terpolymer? EPR?): http://www.google.com/patents/US4584444 (http://www.google.com/patents/US4584444)

Title: Re: silicone spray to soften Topre domes?
Post by: bocahgundul on Sun, 03 April 2016, 07:39:53

Yes I want to know how to soften Topre domes cause a member with a 10 years old topre keyboard said that it feels mushy and stiff


topre are still a rubber dome after all  :))