------------------- UPDATE: 15-07-19------------------------
Found out that my sedan has pre-cut holes for the original blower, so I will be measuring and editting the drawings to be fitted for the original holes.
Might need to re-print the whole thing, but it won't need new holes ;)
The measuring has to wait for a little while though because sadly I won't be near the car for the upcoming two weeks.

UPDATE: 18-06-19
Added a narrower for the blower part(Blower_narrower.stl) which should increase the airflow. Not sure if needed though, just a part in advance.
In my opinion the slit of 10mm was far to wide, this has been decreased to 1.5mm with the added part.

For a while now I've owned a Oldtimer Opel Kadett B.

When driving in rainy weather or in freezing conditions the rear windshield likes to fog up and thus limiting my line of sight.
Normally you'd be able to use the rear window heating element but unfortunally mine has broken traces, so it won't be working.

In search to fix this I've encountered a solution on the dutch Kadett B forum, which looked very promising: http://www.kadett-b20.nl/smf/index.php/topic,12255.0.html

After asking the howabouts of the projects there were no more updates, so after a little while I've decided to draw one myself. After designing the parts i have printed and assembled them. I haven't mounted them into the car yet, but when testing I can notice a warm breeze coming out of the blowers

The demister makes use of the following components:

• two 80mm Fans
• a ceramic heating element. I salvaged mine from a Dunlop car heater like the one shown here: https://www.action.com/nl-nl/p/dunlop-keramische-kachel-/ (I've got mine in the dutch store called Action) (for some reason the link doesn't get completely recognized so you might have to copy + paste it)
• 2x M4x15 screws(for mounting the top)
• 2x M4 threaded inserts(for mounting the top)
• 8x M4x40 screws(For mounting the fan)
• 8x M4 nuts(For mounting the fan)
• 2x M3x15 screws(For mounting the ceramic heater)
• 2x M3 nuts(For mounting the ceramic heater)
• two pieces 50mm Hose with a length of +/- 500mm(depending on the car and mounting options) for this I went to a local petshop, who had 50mm spiral hose(meant for ponds) which does the job perfectly

This project will be updated as soon when it's mounted and I have test results, but at the moment that might take a little while. For dutch readers, the project is also updated at the following forum post: http://www.kadett-b20.nl/smf/index.php/topic,13285.0.html