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[sheerline]

Originally this discussion was part of Homemade Spray Booths topic, but is very interesting so it has been seperated into a topic of its own.
TT

Dave, I also have a cooker hood fitted on its end in the end wall of my moulding worksop, its been there for eight years and I always use it when spraying, moulding glass resins and sanding down. It does not have a great draught however so one tends to work closer to it in an effort to allow it to effectively pull fumes and dust away from the job. I backed it up with yet another shaded pole fan built into the same wall and at the other end of the workshop on the opposite wall I have cut another large opening and screwed a Ford Cortina radiator over it, this item being plumbed in to my central heating. All the air to the workshop passes through the radiator and when it is all running I can stand in a lovely warm flow of air which carries all the dust and fumes downwind and out through the end wall. You realise very soon just how much dust is in the air when you look at the frame work around the fan units after a while. Without the radiator, I would freeze to death in the winter as the airflow is quite good from this lot.

[salty Nscaler]

Sheerline,WOW that sounds like a great set up, how big is it ?? and I take it you use it for your boats eh?would love to see a pic of the plumbing,so the air is being pulled Thur the radiator and do you use any type of filter to help keep it ( the radiator) unplugged
Larry

[sheerline]

Hi Larry, I will try and take a pic for you but its no work of art! I dont put any filters in the out going air, nor do I have any on the incoming air through the radiator. I have to say, I don't do much spraying in there and what I have done never seems to have a problem with dust but then I am no perfectionist at spraying anyway. I reckon with an unfiltered system the best time to spray is when the ground is damp outside as this keeps any airborne dust down to a minimum. The system is mainly used to extract glassfibre resin fumes when I am moulding a hull since I am allergic to the wretched stuff and thats why I installed it in the first place. I fitted a rather crude deflector over the radiator to direct the airstream down and over the workbench so I have a fresh air barrier between me and the glassfibre job I am working on. I could get very wheezy just smelling the stuff when I first became sensetised to it but this fan system works so well that I have no problems now. If I sand glassfibre in its dry state, I can actually see the dust being carried away on the air current but I usually try to keep it wetted to prevent dust in the first place... you don't want to breath that stuff! You can see the amount of dust which has found its way onto the frame of the upper fan but this has taken quite a long time to get like this. As usual, my moulding shed is like a tip and is due a cleanup.

[tigertiger]

Ah! Now fixing the cooker hood vertically behind the workbench, that is smart.

[salty Nscaler]

Sheerline, HI and thank you for the pics  looks great in fact now that I see how you have it set up I can rig something like that at the hunting cabin not this yr to late but come next spring we could heat the place and have hot water to without having to boil a pot at a time.I to am lucky enough to have a shop away from the house and the other half I have been cleaning it up and making room for when my tug kit gets here so I can have a place to built her I think its going to be odd working in a larger scale as I work in 1:160 nowagain thank you for showing me your set up 
salty

[sheerline]

Hi Salty I'm pleased it has been of help. It certainly warms the place up ok, the boiler is in my main engineering workshop which, in the winter is always warm. When I go into the moulding room it's freezing as I usually keep the radiator shut off. If I open the valves and switch on the fans, the place is warm in around one minute. Warm air circulation is the quickest way to heat a place up.. much better than static radiators which simply heat a room from the ceiling downwards....so your feet freeze whilst your head sweats!

By way of further interest, I have a small open fan (like the ones fitted onto the cabin roof or dashboard in American trucks) in my main engineering workshop and I switch this on in the winter. It points upward at an angle and blows the warm air from the ceiling all around the workshop, heating every corner of the place. I have seven flourescent lights in the ceiling and even if the heating is switched off, the heat loss from the fittings will actually help heat the place as the heated air does not simply stay up in the top of the room. Using this method, the wall mounted boiler thermostat hardly ever kicks in.
Chris 

[salty Nscaler]

Chris, Hi this keeps on getting better and better yes we all know hot air raises the hunting shack is a large one room building so we open a window up to move the air Thur as it has no power( yet)but then I would have the noise factor,I remember when living on that side of the pond the water for the cottage was heated Thur a set of pipes running behind the fireplace thus having to have the fireplace going most of the time and then just running Thur the house and returning and picking up more water I think I got a bit off subject.My shop is 24x24 and now one after moving the layout I have a space,table,and lights set up for the boat division .I have yet to find any clubs over here so I was telling the wife ,you maybe we should go back to Scotland and visit some old friends and maybe some new ones, her reply was when after hunting season starts I said "NO" I think the summer would be nice (hint hint) she looked and me and great you going over there to said boats now  and walked away  have a good day off to work for me.
Larry

[salty Nscaler]

I was heating the shop with a pot belly stove but by the time I would get over there get it going it was not worth it,I took out the woodstove blocked off the flue and installed pic-a-watt forced air heaters so now when I go over I turn them on and in a matter of Min's the shop is about 68 degrees and I only have to use firewood for the hosue insteat of both.