Joe's Homecockpit
design.build.fly
laser engraved backlit korry button cap
ToC

Korry-alikes

My decision to build an A320 overhead of cours brought also the demand of having backlit push buttons which also act as annunciators to reflect statuses.

In real aviation the most known vendor for them isKorry electronics. That's also the reason why on searching for them you will sooner or later get to something like "home cockpit korry switches". Of course there are also other vendors but they ain't much cheaper.

And as I anyway decided to build my home cockpit on Pilatus PC12 size, it's simply impossible to put a real-life-sized A320 Overhead in it.

And as I scaled the overhead panel down to 75%, I also had to scale the korry-alikes down to fit well into the backlit Panel at the right positions.

The korry button

simply 3D FDM printed and consists of two parts for uncovered and three printed parts for those with button guards.Korry-swith alike FDM printed push buttons design

The tactile push button

tactile pushbutton
6x6x5mm tactile pushbutton for in-hole soldering

is a cheap 6x6x5mm tactile micro push button which I ordered in hundreds as only my overhead panel requires already 93 of them.

The korry-alike body

is designed as two part in standard. One is the button 'cage' and the second one is the inset which is pressed.

Both parts are really easy to print. I'm printing them with PETG as I can archieve a better layer adhesion and robustness then with PLA.

components of korry-alikes without button caps
components of korry-alikes without button caps
components of korry-alikes without button caps
components of korry-alikes without button caps

The backlit button caps

laser engraved caps

first I tried it with one side spray painted 2mm acrylic sheets which I laser-engraved.

Pros 

Cons 

The sticker sheets

Finally I ended up with sticker sheets I ordered ataufkleberdrucker24.de.

Cutting the button caps from 2mm acrylic plates:

cutting the acrylic sheet with a self-printed tool into 14mm stripes
cutting the acrylic sheet with a self-printed tool into 14mm stripes
cross cutting the stripes to 14x14mm
cross cutting the stripes to 14x14mm

Pros

Cons

Assembly

button cap and mounted korry-alike
The few parts needed
The inset with transparent hot-glue
The inset with transparent hot-glue
the assembled inset with applied sticker
the assembled inset with applied sticker

The stickers

the cut contour of the sticker sheets
the LED color assignments for assembly