Selfie contest – we have a winner!

Congratulations to Ed Martin, who won the selfie contest with this entry:

1. This is Don Strimbu – a tricky angle on the picture, but his smile gives it away
2. He’s famous for the drawing of a nozzle – a fire hose nozzle to be precise – that he drew in 1984
3. Don used block scaling to simulate a 3D effect on the text, knurling, and fins
4. Autodesk used the drawing in its promotional material starting with an ad in the September 1984 issue of Scientific American
5. Don is now promoting products from Bricsys, notably their BricsCAD product
6. Wow, I really don’t know how long it took him, and it would be cheating to ask him … so I’ll guess. 18 hours?

Some clarifications:

1. Indeed it is Don. It was a privilege to meet him at the recent Bricsys International Conference in Munich, among other notables.

2. Correct, NOZZLE.DWG (we were all upper case 8.3 filenames at the time) which is quite possibly the most famous AutoCAD drawing of all time. It was the first complicated drawing ever done with AutoCAD, and was done in 1983 (not 1984), according to John Walker. See The Autodesk File for more information.


3. Yes, it was block scaling. In addition to the 3D effect, the thing Don came up with that amazed John Walker was using negative scale factors to achieve the equivalent of the MIRROR command. That command didn’t exist at the time, along with object snap and a bunch of other things it would be difficult to imagine life without these days.

4. Yes, it was also on Autodesk’s Task Force Tips’ letterhead for a while…

5. Yes, Don and former Autodesk Senior Vice President Dr. Malcolm Davies (also at Munich) are important figures at Techevate, enthusiastic promoters of BricsCAD in the USA.

6. 18 hours is a bit off. How about 400 40?

I remember using NOZZLE.DWG as a benchmark for comparing AutoCAD hardware back in the 80s. Open the drawing, enter REGEN and see how long it takes to get a command prompt back again. As every single zoom or pan required a regeneration back then, regen time was very important. I remember an HP Vectra taking 17 seconds and an NEC APC III taking 19. An IBM PC without math co-processor took much longer; 2 minutes 39 rings a bell, but I’m not certain. These days, it’s so fast it’s hardly measurable.

Anyway, I look forward to seeing what Ed has to say in this blog’s first ever guest posting. Could be anything!

Selfie of the day – who is this man?

I have just returned from a very interesting trip half way around the world. In addition to learning some fascinating stuff about certain things (to be discussed later), I met some interesting people. One of these people can be seen in this photo, which I took with my phone at a party at a trendy location, just like all the cool kids do these days.
20161020_203442The person who answers all (or most) of these questions correctly (or close to correctly) in the next 72 hours (ish) gets a fun but worthless prize.

  1. Who is this man? (Not the one in the corner, that’s me).
  2. Name the drawing he’s most famous for.
  3. Name the technique he developed to help create this drawing. (It still works today, but now has a much simpler equivalent).
  4. Name the CAD company which used that drawing in its promotional material.
  5. Name the CAD company whose products this man is now promoting.
  6. (Tiebreaker question) Estimate the number of hours he says it took to produce that famous drawing.

I reserve the right to make up new rules as I go along without telling anyone. Hopefully nobody will care too much. I’ll be putting all comments on this blog into the moderation queue until the end of the contest so nobody can see anybody else’s answers, so don’t panic if your comment doesn’t appear.

The prize? The right to create a guest posting on this blog with a subject of your choice. As long as it’s probably legal and not too indecent, you can write what you like. Even if it’s “Steve is a poo poo head!”

I hope I don’t regret this. Good luck!

Edit: contest is now closed, see here for the winner.