Hello, I am Pleanpo. I originally posted this on Reddit but thought it would be good to post it here too! (this post is the same on found on reddit and I will update this and the reddit post the same way)
I have been browsing reddit/discord/geekhack and came across a few posts/comments claiming that Kailh Box Switches are breaking keycaps in specific, GMK sets.
About a week ago I decided that I wanted to give Kailh Box switches a try and ordered the 17 switches tester off of KBDfans to see which one would suite me the best. After hearing about the controversy surrounding the caps I decided to test each switches stem thickness individually to see how they compare to competitors in the market.
The tool I used is a 6 In. Steel Digital Caliper made by General which has a accuracy of ±0.001 in./0.02mm. This was deemed accurate enough to test my findings based on the results that were found.
Below I have created a table of my findings and have included an Imgur album with photos of all the switches and thicknesses found. The table will follow the order of the album. All measurements were done in mm with the caliper being zeroed after each switch.
|Switch||X-Axis Thickness||Y-Axis Thickness|
|Cherry Silent Black||1.27||1.09|
|Kailh Box Navy||1.36||1.22|
|Kailh Box Blue||1.39||1.16|
|Kailh Box Jade||1.39||1.21|
|Kailh Box White||1.42||1.24|
|Kailh Box Brown||1.39||1.17|
|Kailh Box Yellow||1.40||1.19|
|Kailh Box Orange||1.41||1.10|
|Kailh Box Black||1.30||1.19|
|Kailh Box Red||1.38||1.14|
|Kailh Box Royal||1.34||1.15|
|Kailh Pro Burgundy||1.27||1.10|
|Kailh Pro Purple||1.27||1.10|
|Kailh Pro Light Green||1.27||1.10|
These measurements show that the Kailh’s Box switch on average is larger than competitors by .1 mm on the x-axis and y-axis. I would like to point out that the Kailh Pro switches were not larger than competitors and fit in the threshold for size. This increase in size can be harmful and possible damaging to keysets. Finally, I would like to know what Kailh’s response to these findings will be and how they will handle this situation.
Thank you for reading, if you would like more measurements done on any of the switches show here or others leave a comments and I will be happy to post more data (if I have the switch).
EDIT: A discord user of the name mgsickler (Mike from Novelkeys) brought this file to my attention. It is the product specification for Dark Blue box switches (navies). In the document it states that for the x-axis 1.32 mm +/- .02 mm is the intended size and for the y-axis 1.10 mm +/- .02 mm is the intended size. These numbers do not match up to my findings but I only have one sample size for navies and it could be an outlier.