How do I put a fan in my welder?

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I have a new Clarke Mig 95. This model does not come with a fan. However, I have read that if I put one in there, it would give me a longer duty cycle adn keep things cooler. Mind you, this clarke does not have alot of space inside.(look one up to see) Still others have done it. Can you give me the insturctions to make this modification Or point me to a thread where the proses is explained in a walk thru kind of way.Bout forgot: where do you get these fans and prices. And what size fan would I need to do a good job on my welder? Thanks guys.Whitey
Reply:You can try using the PC fans and actually attach them either inside or outside. What is the duty cycle? Have you ever gone over the duty cycle? Most welders it's a LOOOOOOOOOOOOONG weld before you ever reach it. Google PC fans or computer fans (3"x3"), most you can find in the $1 - 3 price range. Forget it, here : http://www.pccasegear.com/category9_1.htmJohn -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:That's a question with a lot of variables.   If it's a DC machine it'll have the power semiconductors mounted to a heatsink of some type.  There will be louvers or vents somewhere, and the heatsink inside should have some kind of fins.   That heatsink is where the air needs to go.   Figure where you need the air to blow across, and provide it a place to blow out of.    If it's an AC machine, you need to blow air across the transformer.  Once again, you can't block it's exit.  It has to flow freely.   Sounds like your machine is 120V.  You can get muffin fans many places in any of the popular voltages AC and DC.   Do a Google and look for surplus electronics.   If there is no more room inside the welder's case, you'll have to mount the fan on the outside.  A 4" or 5" muffin fan lends itself well for this application.   It mounts with four #8 or #10 screws.    You can cut a hole in the welder's case and mount the fan over it, put it in a place that will direct the air at the target and again provide an exit.   Sabre-saw a proper hole and drill four screw holes, hook the power wires to the machine's switched power leads and weld away.
Reply:Or just open its door panel and set a box fan next to it