I’m back with another update on the MT3 Susuwatari Keycap set.
Since my last update, we’ve created a few more rounds of samples and ran into a couple problems which made our goal of fulfillment in 2019 impossible. I’d like to share some details of the various problems and solutions we’ve been working on the past month.
We ran into an issue where the second shot of outer shell ABS caused some heat deformation to the first shot (the legends). Since both the legend and outer shell are the same material, the temperature needed for the outer shell to flow will also cause the inner shot soften and deform.
With some additional testing, we were able to address this issue by adding polycarbonate into the legend mix. This allowed the inner legend to retain its shape in the double-shot process.
Here is an example of a keycap with the initial issue - notice the legend is uneven in density.
After fixing the first problem, the polycarbonate mixed into the resin caused the earlier issue of washed out looking legend colors to resurface in an even more pronounced way.
This was a bit more difficult to overcome, but the samples we received this week seem very promising. Here are a few photos below of the new green and blue legends and I will be reviewing these with @matt3o as soon as they arrive in the office.
Our next contingency plan is to fly out to China with @matt3o so we can work on the colors in person if this latest sample run is not approved. We will update everyone on this endeavor once we have a chance to review the latest samples.
Like I mentioned above, worst case, @Matt3o and I will head out to China to finalize the legend colors, but I am hopeful this latest set of samples will be it. Once we’ve had a chance to review we will update the community again on next steps and timelines.
My apologies for not hitting our goal of getting these fulfilled before the end of the year, but I do think everyone will be very happy with the final product we are putting together.