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geekhack Projects => Making Stuff Together! => Topic started by: NeoNoeN on Fri, 17 October 2014, 17:31:33

Title: Custom Cherry MX Stems
Post by: NeoNoeN on Fri, 17 October 2014, 17:31:33
I was thinking that it should be possible to make custom stems for MX compatible switches, but that it would require scale 3d models for the stems. Has anyone scanned the stems in with a 3d scanner or have a scale model of a switch? It should be relatively cheap to 3d print for prototyping.
Title: Re: Custom Cherry MX Stems
Post by: Melvang on Fri, 17 October 2014, 21:48:45
I was thinking that it should be possible to make custom stems for MX compatible switches, but that it would require scale 3d models for the stems. Has anyone scanned the stems in with a 3d scanner or have a scale model of a switch? It should be relatively cheap to 3d print for prototyping.

Fair warning proper prototyping for MX stems would still be best served with still doing injection molding.  The biggest reason is manufacturing tolerances are extremely tight with injection molding compared to 3d printing.  I am not trying to rain on your parade and hope the best but I don't see 3d printing having the tolerances tight enough for anything us hobbiests can afford.  At least not in this application.
Title: Re: Custom Cherry MX Stems
Post by: berserkfan on Fri, 17 October 2014, 22:14:11
I was thinking that it should be possible to make custom stems for MX compatible switches, but that it would require scale 3d models for the stems. Has anyone scanned the stems in with a 3d scanner or have a scale model of a switch? It should be relatively cheap to 3d print for prototyping.

If you just want to change the color of the stems, all you need is dye.

If you want a different level of tactility... heh... heh...
Title: Re: Custom Cherry MX Stems
Post by: Melvang on Fri, 17 October 2014, 22:15:51
I was thinking that it should be possible to make custom stems for MX compatible switches, but that it would require scale 3d models for the stems. Has anyone scanned the stems in with a 3d scanner or have a scale model of a switch? It should be relatively cheap to 3d print for prototyping.

If you just want to change the color of the stems, all you need is dye.

If you want a different level of tactility... heh... heh...

Yup.  My sentiments.   If you want more tactility than MX has to offer I hear Alps and Topre are more tactile and buckling springs are much more tactile than MX.  The one issue here is any of those other options have much less to offer in the terms of customization than MX.
Title: Re: Custom Cherry MX Stems
Post by: NeoNoeN on Fri, 17 October 2014, 23:47:05
Damn, I thought it would be pretty awesome to have personalized switches but I guess that doesn't really seem too possible. I thought that it would have been awesome to make super tactile switches and bumpy linears and stuff.
Title: Re: Custom Cherry MX Stems
Post by: nubbinator on Sat, 18 October 2014, 00:02:22
Damn, I thought it would be pretty awesome to have personalized switches but I guess that doesn't really seem too possible. I thought that it would have been awesome to make super tactile switches and bumpy linears and stuff.

So Browns?

Kidding aside, there have been some done.  There were some recently done in China.  My one problem with them is I don't think they made the legs long enough, so they can get a bit sticky.
Title: Re: Custom Cherry MX Stems
Post by: dorkvader on Sat, 18 October 2014, 07:46:11
I was thinking that it should be possible to make custom stems for MX compatible switches, but that it would require scale 3d models for the stems. Has anyone scanned the stems in with a 3d scanner or have a scale model of a switch? It should be relatively cheap to 3d print for prototyping.

Fair warning proper prototyping for MX stems would still be best served with still doing injection molding.  The biggest reason is manufacturing tolerances are extremely tight with injection molding compared to 3d printing.  I am not trying to rain on your parade and hope the best but I don't see 3d printing having the tolerances tight enough for anything us hobbiests can afford.  At least not in this application.

Could you machine some POM precise enough?

Damn, I thought it would be pretty awesome to have personalized switches but I guess that doesn't really seem too possible. I thought that it would have been awesome to make super tactile switches and bumpy linears and stuff.

So Browns?

Kidding aside, there have been some done.  There were some recently done in China.  My one problem with them is I don't think they made the legs long enough, so they can get a bit sticky.
Look for "pink stem" mx.
Title: Re: Custom Cherry MX Stems
Post by: nubbinator on Sat, 18 October 2014, 10:58:12
They're also done in Orange.
Title: Re: Custom Cherry MX Stems
Post by: OverKill on Sat, 18 October 2014, 11:24:03
If you have access to a mill, you could make a few molds and then use http://www.injectionmolder.net/ (http://www.injectionmolder.net/) to prototype with. It is a pretty neat machine but I have never actually used one before. There are other machines like it out there, google "table top injection mold machine"
Title: Re: Custom Cherry MX Stems
Post by: Findecanor on Sat, 18 October 2014, 17:38:01
I thought that it would have been awesome to make super tactile switches and bumpy linears and stuff.
Have you tried Clears (http://deskthority.net/wiki/Cherry_MX_Clear)? It is quite tactile. By changing the spring, it can be made less stiff. It needs lubrication to feel as smooth as the less tactile switches, though.

The Chinese "orange" switch slider is supposedly a middle-ground between Clear and Brown.
Title: Re: Custom Cherry MX Stems
Post by: nubbinator on Sat, 18 October 2014, 20:13:56
The Chinese "orange" switch slider is supposedly a middle-ground between Clear and Brown.

They were originally pink but were done in orange for a recent Chinese GB.  I have a set.  They are between Browns and Clears.  I haven't tried them with an ergo weight yet, but at 67g they feel like marginally bumpier Browns.  Some run into the issue of grabby legs though.  I don't think the legs were made long enough, so they sometimes catch a little.  I expect them to have a bigger bump closer to Brown weighting, just waiting on my sprit springs.