Tools, I used a Foredom rotary tool. It is pedal operated tool like a dremel.
After saving the image from Pinball browser, I scaled the image up but a factor of 3, then deleted odd rows and columns. This left an image with the pixels of the image with 1 pixel spaces between them.
For drac, I manually positioned 3x3 sqaures over the image to choose how to scale it. I thought it would not have enough strength or brightness with small holes. After Drac, I realised it could be pushed a lot further. For the amp it was just left as is.
Once printed, I used a push pin to make a hole to mark the center of every hole, then I started drilling.
The amp took about 2.5 hours of drilling. I have no idea why I enjoy creating pumpkins for one day, but the fact that it is disposable is part of the appeal.