I spent the last hour searching for a pantograph for the dremel, but didn't have much luck. There were a few examples but nothing I would waste my time on. I have a full size pantograph from Milescraft and the thought ran through my head, "why not use the Milescraft as an example and downsize it by 50% or so and adapt it for the Dremel?" All it consists of is metal tubing and hardware to hold it together. Actually no heavier than the Dremel is 3/4 or 1 inch dowel rod could be used. The base plate to hold the Dremel could be made from 1/4" acrylic by cutting the hole the same size as the dremel nose without the screw on attachment and then use the screw on attachment to fasten the tool to the base plate. Just to clarify, I have the 4000 model Dremel so I am not sure if all Dremel's have a removable nose piece and if not another way to fasten the tool to the base plate would be in order. If you don't have a Milescraft Pantograph there are several pictures of it online that could be used as an example. In fact, later on today I will take a picture of mine and layout the measurements of each part on the picture to post in this thread.
When something is advertised as being foolproof there is always a better class of fool that comes along to prove them wrong.