Two DXF files are available for Apple Exteded Keyboard layout. The difference is just spacebar part and other parts are identical.

Also check the first post of Alps64 PCB thread at geekhack.org.

Its dimensions is 95x285mm and total length of all paths is 4492mm for reference. This supports 'flipped' and Dutch AEK spacebar in addition to US. This is preferable in most cases.

Its dimensions is 95x285mm and total length of all paths is 4423mm for reference. This is plain design for US AEK.

2020/04 Removed dimension drawings from alps64_plate_aek.dxf 2018/04 AEK plate with flipped spacebar support 2016/07 AEK plate

how to launch:

python kicadpcb2dxf.py -f alps64.kicad_pcb

• https://github.com/easyw/kicadpcb2dxf
• https://forum.kicad.info/t/dxf-exporter-for-mechanical-layers-of-kicad-pcb-board/2885

This seems to work with disabling 'Plot all layers in outline (polygon) mode' of DXF options.

Image file for reference can be created by 'export as image' of LibreCAD or 'Bitmap Export' of QCAD.

https://librecad.org/

https://www.qcad.org/en/