How to show engine turning in a Presentation Drawing
The thing that frightens many designers away from engine turning, apart from a lack of knowledge about what is possible in the first place, is their perceived inability to demonstrate their ideas to their customer or employer so that the engine turning is represented on the design in a reasonably neat and acceptable way.
" To remedy this, some friends and I, working on a lecture I was giving at Goldsmiths Hall, decided at 4.45pm one afternoon in the mid 1980s, before the alcohol licencing laws were relaxed in England, to produce the following demonstaration of one way to quicky and realistically present engine turning. This was so easy that (apart from a few final brush strokes to the finished drawing which were added the next morning before shooting onto 35mm film) we did not find it necessary to waste any valuable drinking time and were in the City Pipe pouring a large jug of good English beer into our pewter tankards by 5.01pm! "
Photocopy of a pattern sample enlarged, with pound coin, similar to one euro.
First: find a reasonable sample of the pattern you want to use or an illustration of the same.
Photocopy the sample using an enlarging photocopier or a computer with a flat bed scanner. It should be obvious that use of a computer and image processing software could substantially improve upon this little excercise carried out many years ago, but I include it unmodified because of it's simplicity and the lack of any need for special skills. You can do your own upgrades!
Wrapped around a spray can...
Having enlarged the pattern to fit any suitable handy object of a similar shape to the design, in this case a can of photo-mount spray, cut out and wrap your image around the object.
A copy from the wrapped can.
Photocopy the can with a large sheet of white paper draped across the top to exclude the light. (The pound coin was put to good use in exchange for a pint of beer, 15 minutes later!)
Pasted together for another scan or copy
Cut and paste the usable area of the result onto a clean sheet of paper, then re-photocopy or scan (a few spares might come in handy) reducing the result to the size and position you want in your presentation drawing.
You could go to some length with cutting and pasting images of patterns for a sophisticated drawing for an expensive product, but in view of the imminence of opening time we just sketched in this cigarette lighter on the actual photocopy!