Ideally the best place to drill through a floor joist is the middle 3rd- the part that is doing the least. The top of that joist is under compression and the bottom is under tension. The middle just sits there (this is why I joists work)
Now with a door I'm not sure how relevant that is, but I think that if you put a hole in the middle like that you could maybe route out the bottom and stick a piece of aluminum in there with some longer screws. I think the biggest problem would be any pressure from the panel if it wants warp. Either naturally of from moving the door.
Now with a door I'm not sure how relevant that is, but I think that if you put a hole in the middle like that you could maybe route out the bottom and stick a piece of aluminum in there with some longer screws. I think the biggest problem would be any pressure from the panel if it wants warp. Either naturally of from moving the door.
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