I have a LN #4 1/2 HAF that is a favorite plane for difficult wood.
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I love the plane but I also really like the tote (on the right) from the LN #8. Slightly taller and and different horn.
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LN generously investigated whether the two totes were a direct swap, but they're not. They do have replacement totes available though so I'm going to try converting mine to the #8 tote.
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The LN #4 1/2 has a boss where the screw joins the body. I'd tell you what the LN #8 body looks like but I don't have one.
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Looks like modifying the LN #8 tote to a #4 1/2 style tote is possible. An 11/16" forstner bit is a perfect fit. I just need to drill a relief on the #8 tote for the boss on the #4 1/2 body.