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geekhack Community => Keyboard Keycaps => Topic started by: a Horde of Penguins on Sun, 26 October 2014, 20:33:08

Title: nub artisan keycaps
Post by: a Horde of Penguins on Sun, 26 October 2014, 20:33:08
what heat should my plastic be able to withstand without getting melty? idk if 80 degrees Celsius is good enough, might have to look at other materials
Title: Re: nub artisan keycaps
Post by: BlueNalgene on Sun, 26 October 2014, 20:40:29
The theoretical maximum will to heat without complete melting will be the glass transition temperature (https://www.sigmaaldrich.com/content/dam/sigma-aldrich/docs/Aldrich/General_Information/thermal_transitions_of_homopolymers.pdf).  This will be unique for the polymer you are using, and can vary with additives, molecular weight distribution, copolymers, etc.  I suggest looking up the Tg of your specific polymer and staying below that to avoid deformation.  If you go above Tm you are completely screwed, so don't do that.  If you bought virgin polymer from a reliable source, there will probably be Tg and Tm listed on the packaging or with the properties sheet.
Title: Re: nub artisan keycaps
Post by: Puddsy on Sun, 26 October 2014, 21:27:02
why is it gonna be at 80C?
Title: Re: nub artisan keycaps
Post by: HipsterPunks on Sun, 26 October 2014, 21:35:00
came for dolly's... disappointed
Title: Re: nub artisan keycaps
Post by: cmadrid on Sun, 26 October 2014, 22:39:09
Me too :(
Title: Re: nub artisan keycaps
Post by: a Horde of Penguins on Mon, 27 October 2014, 00:53:41
came for dolly's... disappointed

idk lol i doubt it ever would, but i was thinking how hot do peoples rigs get, and what if a random keycap was on the rig without proper cooling and melted. kinda an absurd scenario i guess
Title: Re: nub artisan keycaps
Post by: Binge on Tue, 28 October 2014, 03:05:49
I'm so entirely confused.
Title: Re: nub artisan keycaps
Post by: Krytone on Fri, 31 October 2014, 03:25:01
i think you need to update your thread title. Also got confused on the relevance of your title to your question. You might get better answers with a descriptive title  :thumb: