The Perfect Ventilator

[system 4-50]

<dreammode>

I am moving house (if all the relevant parties can stop cocking up the arrangements).  I am moving to a place that has a MakerSpace not far away.   All MS have at least a 3D printer.  I have never played with a 3D printer.  I would like to have a go.  Yes, I know that most of the effort goes into making them work.

I need a bigger set of ventilators.  I have some UFO ones and they seem not too bad.  I am not sure whether they will continue to be available as I understand that ECS has problems.  But they have some drawbacks.  Perhaps I could 3D some better ones?

The UFO drawbacks:

• ugly as sin
• requires far too many holes in the roof
• uses screws rather than bolts
• either permanently open or openable & not both
• vent size small, with bug mesh even smaller
• only takes expensive fan
• no neat fittings for ceiling end
• too short to traverse ceiling insulation
• does not intrinsicaly prevent roof condensation from around the fitting
• the SS plate does not drain particularly well and can cause rust
• did I mention ugly as sin?

The UFO benefits:

• It ventilates
• It can be stood on by an elephant
• It does not trap ropes 
• It does not drop condensation down the back of your neck unless fitted badly
• It can take the ECS fan
• It keeps screw manufacturers in business

My ideal ventilator:

• Gives a lot of ventilation in the one fitting
• Is variable, but can be easily modified to be fixed open for BSS test day. 
• Has bug screening as standard
• Does not trap ropes
• Does not promote rust
• Has only 3 fixings (or none at all) at the standard UFO points
• Uses bolts rather than screws
• Has 2 ring seals rather than just one
• Is easily replaceable
• Can be stood on infrequently by small people
• Does not drop condensation from inside the fitting
• Does not drop condensation from the roof around the fitting
• Can take many sorts of fans, both round fitting and square, of various sizes
• Has a long duct that will pass through any length of insulation, tailorable
• Has a supplied ceiling fitting that is easy to remove for cleaning
• Can easily take a cable from the cabin to the roof for eg aerial
• Is still as ugly as sin

Comments invited.

</dreammode>

[Alan de Enfield]

It seems a strange reason to move home.

Would it not be cheaper to just buy your own 3-D printer ?

[NB Lola]

Wake up

[Onewheeler]

That's one of these that you mean?

Yes, they're horrible. When the screws failed and I couldn't find a tap to thread new holes (the remains of the old screws being corroded into their holes) it was replaced by a plastic pudding basin. That was three years ago. Still looking for a better replacement. Let me know if you go into production!

Martin/

[system 4-50]

Not exactly. The ones I'm dealing with have circular holes in a ring around the outside.

[TheBiscuits]

On 24/03/2018 at 11:03, system 4-50 said:

My ideal ventilator:

• Is variable, but can be easily modified to be fixed open for BSS test day. 

Really?  You only care about correct ventilation for one day every 4 years?

[system 4-50]

1 minute ago, TheBiscuits said:

Really?  You only care about correct ventilation for one day every 4 years?

I only care about having enough ventilation for the stove, gas fridge, 4 cooker gas rings, two gas ovens, and Morco all running flat out at the same time, one day every four years.  The rest of the time I use commonsense.  One day I may be found dead in my boat but it will be because I've decided its time to go, but currently my favoured departure strategy is hang-gliding.

[WotEver]

26 minutes ago, system 4-50 said:

currently my favoured departure strategy is hang-gliding.

There are more fun ways to go...

http://www.latimes.com/local/lanow/la-me-rocket-man-blast-20180325-story.html