For starters, let me say that I have had absolutely zero issue installing other MT3 sets (LoTR, Serika, Susu/many of the different ABS sets) on my Topre boards (HHKB) with MX sliders.
I received these almost two months ago and finally sat down to install them today. Of the 60 keys installed on the HHKB, 11 keys bind (become stuck on the bottom) when pressed. That's 18% of the installed keys. Doing a random sampling of the keys I'm not using also found additional keys that bind.
To confirm that this is a key issue as opposed to a switch/slider issue, I tested the binding keys on multiple sliders. Keys that bind always bound regardless of which slider/switch it was installed on. Keys that did not bind worked fine on the sliders that bound on the bad keys.
Again, this same exact keyboard/setup typically has MT3 keycaps installed without issue (in the past 4 months, it has had Dwarvish, Elvish, and Serika).
I highly recommend skipping this set if you're planning to use these on Topre.
TopreLoveJust got my set in hand today and just tried out the 6u spacebar on hhkb with deskey spacebar stabs installed. it binds like hell and stuck to the stem of the stab like crazy. On the other hand 6u spacebars from MT3 Godspeed R1 and 6u SA Oblivion works without issue. So disappointed since I'm also strictly building Topre boards. Have you found any solution to this? Or try the set on different boards like Realforces or Leopold ones?
eapdangI've tried it on a few different boards / setups...ultimately, some keys always bind.
For my spacebar though, while it is a super snug fit (probably fear-of-stems-eventually-cracking snug), it doesn't bind. I tried it on novatouch (Heavy Grail) and pbb (stock HHKB Pro 2 case) sliders/stabilizers.
It sounds like the tolerances are all over the place for this set. I was debating on exchanging, but I imagine it would be darn near impossible to get a perfect set (especially since drop requires that the original set be returned first).
TopreLoveNow I remember having similar issues with KAT Refined WoB as well on the same hhkb, but the set works fine on non-hhkb topre boards (Realforce, Leopold). Guess it's what we have to deal with the nature of reverse-dyesub PBT, tolerances just can't be guarantee and everything is a crap shoot. I'll try this set on some other custom builds using Topre housings later on and report back.
kei_1I believe the pictured keyboard uses Novatouch sliders, which you can't really buy easily anymore.
The gold standard is basically Des Sliders. There are other ones nowadays like KLC/Densus or PBB (don't really recommend). If there are KBDFan sliders still floating around out there, definitely avoid those.
TopreLoveThank you. I have Deskey sliders in stock right now but I'm not sure If I will have same issue like you mentioned or not.
But I did have pretty similar issue with Deskey and the spacebar of the Extended 2048 White keycap set. To be more detail, if I push the spacebar down 100% to the stab, it's not be stuck to bottom but it is not able to bound back. So I only push the spacebar to like 80% of the stab height.
This keycap set look awesome but I don't want to waste ~200$ for the keycap which I can't use anyway.
This is my keyboard specs:
Sho S60v3
Stock Housing with Deskey slider
Cipulot PCB
kei_1The sliders themselves are not the issue, but the housing. On a MX switch, the top half gets more narrow as you get to the top. With Topre/EC housing, it doesn't really get more narrow - at least compared to MX. This is why while MT3 / other high profile keycaps work fairly well on Topre, many others have collision issues.
The issue with this specific set is that the dyeing process likely shrinks the keycaps enough such that the tolerances as super tight for Topre/EC. While most keycaps work, a handful will shrink enough collide with the housing.
If you're planning on buy these for Topre/EC, I would not recommend it. It would likely take multiple sets to put together something usable.
Extended 2048 White shouldn't have the same issues in the sense that this set has, which we suspect is a result of the reverse dye-sub process. But what is likely is there is some level of warping and it's causing weird tensions/forces within the stablizer.