Originally Posted by FlyDave
This is a tool i have built yesterday, because i needed something to draw a precise line around a round shape (nose cowl) to obtain a reference line for a dremel cut.
I don't know how to call it, maybe someone can suggest a name for this tool eheh.
It can be used for example to draw panel lines, using the drawing as reference and then scale the measure. You set the position of the pen and you draw the line.
The base is a piece of wood i had in the shop. Drilled an hole and put a 10mm diameter x 1 meter lenght aluminium tube. Fixed with PU glue.
The mobile piece is another piece of wood, with one hole for the aluminium tube, one for the pen/pencil, and one for a screw so i can fix the vertical position.
Time to built : 30 minutes
(sorry for my english, pictures are better than words)
Looks good. A really simple idea for use in very simple cases: make some reverence marks, wrap with blue painter's tape, draw along the edge.