[VINTAGE] ATTI ST-515 - Super rare keyboard with super rare switches

[zlobin356]

Hi. This is my small talk about this vintage keyboard.

ATTI is very old cherry clone that was made before exipiring of MX Patent, this is second documented keyboard with those switches.

ATTI haves old cherry design, uses Hirose style contacts, the pole on stem is less rounded than on vintage black. The molds are completely different, mine haves label "14" on stem. The bottom is completely blank






The spring here is around 62g. Super pingy, some examples are crunchy?

The push feel in stock condition was awful, due to gunk inside it was hard to press it with keycaps, it can be fixed with cleaning and lube, the switch is scratchy in stock, equivalent to late 89-early 90s vintage blacks, after lubing it with oil it reminds me lubed hirose in terms of smoothness and bottom out, i really like it. Switch haves zero wobble and doesnt require any films, switch sounds like standard mx black and probably uses classic mix of POM-NYLON-NYLON. Switch was completely dry. Hope there was more switches with contacts like this, they are really enjoyable

Lets make keyboard teardown.
The keycaps here are pad printed DCS profile keycaps, made of ABS, they are super yellowed, casting of them is awful and caps have lots of cracks, they are pretty glossy and thin, some caps have LED windows and are stepped.


The case is thick and solid, made of ABS plastic with rough texture, board haves top mount and stainless steel plate. haves some scuffs on it. lost 2 screws



PCB here is brown/green pcb with lots of lacquer on it, haves empty switch sockets, they are soldered and have traces, but there is no switches. Board uses costar stabilizers on spacebar, other keys are stabless.


The cable here is DIN 6-Pin, also haves separated grounding on case screw.


The switches here are mostly ATTI black, but bottom row haves vintage blacks (marking number is 40 on bottom housing), also on Cursor key i found one PDC black, i have 0 info about this switch

Thats all i can say about this board.

[zlobin356]

wts by the way