Fume extractor / Hotte

Here's a nice little clone of an RSComponents [fume extractor](https://fr.rs-online.com/web/p/extracteurs-de-fumee-de-soudure/1234905).
=> Pictures below
It is noisy but it works very well.

#Checklist
- [A fan](https://fr.rs-online.com/web/p/ventilateurs-axiaux/6196961/) !!! Be careful it's 230VAC !!!
- [A fume extractor filter](https://fr.rs-online.com/web/p/accessoires-d-extracteur-de-fumee-de-soudure/1234906/)
- 4 M4*80mm screws (with bolts and washers)
- [A 120*120mm fan grill cover](https://www.thingiverse.com/thing:2802474)
- A 3DPrinter

#Be careful !
You must use a fan grill cover at the front and back of the fan, the fan is quite dangerous.
I decided to use a 230V AC fan so that I don't have to buy a power supply as well. 230V AC is very dangerous even at this low current, you must ground the fan chassis and protect every exposed 230V lines. Also, make sure the 230V is mechanically resistant (an accident can happend with wearing of the cable insulation).

#As