Howto determine the difference between ABS, PBT and POM

ripster wrote:so I guess that means I can't move images from here to WikiMedia?

?

No.

I do it the other way round: I upload them to the wiki and then post them here.

See:

Image
Guaranteed 100% POM-free!
7bit
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Unread post02 Jun 2012, 17:28

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AH, THANKS FOR THE TIP!

Did you guys ever figure out the size of pic you wanted????
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Unread post02 Jun 2012, 17:29

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ripster wrote:AH, THANKS FOR THE TIP!

Did you guys ever figure out the size of pic you wanted????

I think it is restricted to 724px.

Or do you mean the size of images in the wiki?

Just make them as large as you like.
:evilgeek:
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Unread post02 Jun 2012, 17:31

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724px it is then!
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Unread post02 Jun 2012, 17:57

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ripster wrote:724px it is then!

Just checked. It's 749px.

It would be much better if there would not be a fixed size on that, but webwit ignores me when it comes to improvements.
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Unread post02 Jun 2012, 18:07

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I am still wondering if the ABS awesome key sunk like a brick when you put it into clear tap water......
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Unread post02 Jun 2012, 18:09

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To boldly go where no innovator has gone before : always engage at full trust.
7bit wrote:
ripster wrote:724px it is then!

Just checked. It's 749px.

It would be much better if there would not be a fixed size on that, but webwit ignores me when it comes to improvements.

Hah, I know a TRAP when I see one. You take the lead on making forum improvement suggestions. It rarely ends well. Especially when half the moderators are from OCN!

And be nice, Reddit is watching.
Last edited by ripster on 02 Jun 2012, 18:38, edited 1 time in total.
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Unread post02 Jun 2012, 18:33

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Mrinterface wrote:I am still wondering if the ABS awesome key sunk like a brick when you put it into clear tap water......

Got any distilled water and RinseAid? And ROCK might have been an exaggeration. But once you get into comparing speeds you get into RipOmeter precision arguments.

Float or do not, there is no try!

The salt avoids false positives for PBT.
Last edited by ripster on 02 Jun 2012, 18:58, edited 4 times in total.
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Unread post02 Jun 2012, 18:36

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I respectfully disagree.

The difference between a rock and a feather is very pronounced.

It's good to know that when in doubt, you can always add salt to the mix.
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Unread post02 Jun 2012, 18:52

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To boldly go where no innovator has gone before : always engage at full trust.
Well, each scientist has their favourite test. Look at RipOmeter vs WitOmeter vs LimmyOmeter! Just don't do a CERN on Einstein is what I say!

Tried boiling POM yet? My guitar pic did not get the rough edges but my Kinesis Keypad did so I suspect softening/colouring/uv plastic additives.

The finger slide test is still the best for that one. It's like sex. Eewwww....
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Unread post02 Jun 2012, 18:56

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Well, you could always compare the breakdown potentials of PBT and POM. The breakdown potential of PBT is more than twice as high as the POM's.

http://www.matbase.com/material/polymers/engineering/pom.hom/properties
http://www.matbase.com/material/polymers/engineering/pbt/properties

Spoiler:

Image
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Unread post03 Jun 2012, 00:22

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I just breakitdown with a hammer.

PBT keys shatter.

Abs does not.
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Unread post03 Jun 2012, 04:47

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7bit wrote:
ripster wrote:724px it is then!

Just checked. It's 749px.

It would be much better if there would not be a fixed size on that, but webwit ignores me when it comes to improvements.

That's because I have no idea what you're talking about. What fixed size?
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Unread post03 Jun 2012, 12:09

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I was wondering that too.

The image resizer works fine for <2M pics AFAIK.

At GH even the site admin can't answer a simple question so I had to figure it out myself.

http://geekhack.org/showthread.php?3116 ... oad-limits
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Unread post03 Jun 2012, 15:15

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Speaking of images...

It's HAMMER TIME!
Image

I assume memes are a no/no.

Bummer.

Spoiler:
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Unread post03 Jun 2012, 16:19

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Ah but how many nickles in a tap? :)
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Unread post03 Jun 2012, 17:08

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.. he's just a poor kid from the stupid ages.
I'd hit my scale to find out but I'd rather not.

Think finish nails.

My Hero And Inspiration For Many Of My Modifications/Tools/Jigs/MeasurementDevices
Image

For KEYBOARD SCIENCE NORM. FOR SCIENCE!

This guy too:
http://www.theonion.com/articles/scienc ... rbaki,288/

Remember kids, eye protection.

Eye protection.
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Unread post03 Jun 2012, 17:14

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ripster wrote:Speaking of images...

It's HAMMER TIME!

I assume memes are a no/no.

Bummer.
I wiki'd it anyway:

wiki/Keycap_construction#Testing

Mind that this test isn't truly scientific: it doesn't take the keycap construction into account. If one of the two is better reinforced, it might have a better resistance for smashing. I marked it as "improvised" in the wiki.
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Unread post04 Jun 2012, 14:27

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Try it, it IS fun!

Acetone and paint brush on underside of key is a tad less destructive but results in loss of brain cells which I have a surfeit of.
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Unread post04 Jun 2012, 14:28

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I used a hammer... Smashed them all to smithereens.

Then I used a pincer :



Notice the watch.... :ugeek:
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Unread post04 Jun 2012, 20:05

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To boldly go where no innovator has gone before : always engage at full trust.
Hah,great video!

I have a basement concrete floor so your GF is probably glad you didn't use the hammer on your dining room table!

Pom versus PBT isn't an easy one with chem/physical testing but once you've tried them the feel is unmistakeable.
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Unread post04 Jun 2012, 20:20

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BTW I took my Cherry Corp RicerCar SPOS keyboard with POM keys outside and it indeed has SLIGHT dimples on the Numpad Enter and spacebar.

But in this case since PBT and POM keys have dimples it doesn't help us much.

These keys remain the FAVORITE of my lasered White on Black keys.
Image


I still mean to write the technology up into a Wiki sometime. I THINK it is low wavelength lasers with Titanium Dioxide additives to the POM.

Anybody know for sure? This has been bugging me for YEARS!
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Unread post07 Jun 2012, 16:07

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OK, I give up.

What's a krankenveir...

Whoa, SICK pic dude!
Image
Last edited by ripster on 08 Jun 2012, 17:46, edited 1 time in total.
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Unread post08 Jun 2012, 17:44

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"Ill-Insurance-Owner-Card"

That's what you get when you watch german kid television shows when you are young :-)
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Unread post08 Jun 2012, 17:46

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To boldly go where no innovator has gone before : always engage at full trust.
Oh, first time I googled it I got this:
einen Kranken aufpäppeln
to cocker an invalid
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Unread post08 Jun 2012, 17:47

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What googler location are you using?

I google ranked first get this : http://de.wikipedia.org/wiki/Krankenversicherungskarte

Never really understood how google does that.....
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Unread post08 Jun 2012, 17:55

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To boldly go where no innovator has gone before : always engage at full trust.
Ah, a better translation : "Health Insurance Card"
Obvious, once you see it....
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Unread post08 Jun 2012, 17:57

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To boldly go where no innovator has gone before : always engage at full trust.
Nothing about German is obvious.



I'm still figuring out why their health care system allows the cocker of invalids.

http://www.dict.cc/german-english/Kranken.html
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Unread post08 Jun 2012, 18:39

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