It's the big day. I cut the roof for the vent. No going back now! (At least not with some welding and such.)<br><br>I had already measured placement and cut away the insulation from the inside. I drilled small holes at the corners. Then I went topside to measure and mark everything, making sure it was square. One of the drilled holes was a little off, but I still had enough reference points.<br><br>
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<br><br>Introducing the implement of destruction.<br><br>
<br><br>Angle grinders make quick work of steel.<br><br>
<br><br>However, if you've already insulated, the sparks from the grinding wheel can melt the insulation.<br><br>
<br><br>And it's probably a good idea to use low-tack painter's tape instead of duct tape. I forgot about the eagerness of cargo van paint to peel off.<br><br>
<br><br>But I had some white spray paint on hand. The cut edges should probably be painted with something anyway to discourage rust.<br><br>
<br><br>But the vent fits. No further cutting needed. While it was in place, I drilled holes for the screws. After drilling two corners, I put in some screws to keep the vent from moving while I drilled the other holes.<br><br>
<br><br>It's time for a lunch break. The great sealing adventure commences this afternoon.<br><br><br>