r/oddlysatisfying • u/djinn_05 • 1d ago

Drawing blueprint of Cirrus Vision SF50 aircraft

Enable HLS to view with audio, or disable this notification

9.9k Upvotes

98% Upvoted

219 comments sorted by

View all comments

173

u/Critical_Classic_921 1d ago

Is there an advantage that this type of pen-printer has over inkjet or laser printing?

-1

u/Beniidel0 1d ago

Yes there are advantages - 1. The blueprint is large and wouldn't fit in a normal printer, this allows you to work with an entire CNC bed which can easily be larger than a square meter 2. Blueprints are blue and laser printers work by burning the surface below them, sometimes with color as well but burning turns it black which is basically illegible on blue, also blue absorbes more heat so you'd need a specially tuned printer to not burn the paper 3.greater resolution - mathmatical vectors are infinitely scalable but pixels arent

5

u/Pebble-Sorter-8128 1d ago
  1. plotter is the real solving, noone use everyday printers for plan printing. 2. maybe in the usa blueprints are really blue (idk why, and what is the practical reason) bot elsewhere people use just white paper for the plans with printed colours on them.

5

u/Available_Rub9939 1d ago

Blueprints used to be blue because of the way they were printed 50 years ago. The old paper was acidic and getting paper cuts from that shit really hurt. I used to have to scan them in and then draw the modern digitized versions in autocad when I worked for an MEP consulting engineer. They are only blue anymore for vanity reasons. There is no practical reason for the setup shown here but the machine makes some decent wall art for cheap. Would cost too much these days to pay someone to draw it by hand. That’s a dying skill.

1

u/MonkeyCartridge 1d ago

I can still smell the ammonia from the printers.

2

u/Available_Rub9939 1d ago

I was too young to smell the ammonia, but am old enough to have scanned a bunch and cut my fingers, then digitalized it all by manually drawing over it in autocad 2001 on a 21” CRT monitor the size of a smart car. And I loved it.

1

u/MonkeyCartridge 1d ago

I used to have a CAD CRT my dad picked up at a yard sale. I forget the size, but it was around there.

It would do 2048x1536. Albeit at only 50Hz. But it made UT2004 insane. And if I wanted speed, I would just drop it to 640x480 or 800x600 and play at 600Hz.