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Step 3Mark and Cut Holes
An ice chest/cooler has a double lid with a cavity. This is convenient because we can cut separate holes for the fan and heater core.
On the underside of the lid, mark the outline of the heater core, then go in about a quarter inch and cut out a rectangular hole through ONLY the first layer. This will allow airflow through the core, but still make it easy to attach.
Next, you will need to mark the inside of the fans and cut out two circular holes. We originally planned to use a hole saw to cut the holes, but found that we didn't have a bit that big, so we chucked a saw blade into the Dremel Rotary tool and zipped it out, of course wearing safety glasses (hint hint).
Tada! You now have a rectangle on the inside and two circles on the outside. Now that you cut out these lovely holes, lets fill them in.
On the underside of the lid, mark the outline of the heater core, then go in about a quarter inch and cut out a rectangular hole through ONLY the first layer. This will allow airflow through the core, but still make it easy to attach.
Next, you will need to mark the inside of the fans and cut out two circular holes. We originally planned to use a hole saw to cut the holes, but found that we didn't have a bit that big, so we chucked a saw blade into the Dremel Rotary tool and zipped it out, of course wearing safety glasses (hint hint).
Tada! You now have a rectangle on the inside and two circles on the outside. Now that you cut out these lovely holes, lets fill them in.
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May 12, 2010. 12:47 PMdonfro25
says:
does the part between the fans an the heater core have to be sealed from everythin below...
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May 12, 2010. 1:29 PM
CameronSS (author)
says:
CameronSS (author)
says:
Not particularly, it just pulls air over the core better. The caulk was mostly just a clean and sturdy way to attach it.
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