Promethean ActivPanel AP9 Crayon - Compatible Replacement Pen

“Can I have a new pen for my Promethean board, I've lost my old one”.

Ah, the usual weekly service ticket; another lost pen which needs to be replaced.

Why not replace it with something relatively quick to print, cheaper than the original, and rather fun at the same time?

Introducing the AP9-Compatible Crayon, complete with matching paper label:

Printing

I printed mine in PETG as that's what I had to hand, but PLA is a perfect material for this sort of print (it will be softer on the panels too).

I'm going to experiment with adding a teeny dob of hot-glue to the top of mine, as this may further reduce the risk of scratching your shiny panels.

After printing, you may need to trim off any excess plastic from the top of the print; I just use a pair of flush-cuts, and sand down any sharp edges. 

The crayon is fully pen-compatible with the screens, just use it as you would a first party stylus. The rear of the pen is also usable as an eraser on compatible boards.

Labels!

Of course, your crayon wouldn't be complete without a matching label!

1. Print off one of the attached templates, and cut out the label.
   1. If you're not printing on Prusa Orange material, use one of the mono/transparent templates and print on a coloured paper of your choosing.
2. Once cut out, apply clear tape across the full length of the top edge, then align and stick this onto the printed crayon, trimming off any excess.
3. Finally, stick down another layer of tape across the remaining length of the label, trimming to size.
4. All done! You got yourself a crayon!