About the above posts, These are some good points.
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1 – Writing the weight will make it hard to sell later.
Maybe. I use a very fine point pen, and put the numbers in a hidden spot. For example, on a jacket, I’ll write it on the underside of the tag (if I haven’t already cut it off).
Do NOT use a big fat SHARPY and scrawl (never!).
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2 – The weight changes when you modify gear.
TRUE! I have already run into this, because I find a way to compulsively modify everything! No good answer for this. The “revised & updated” number goes on the spreadsheet, the “wrong” number is on the gear. That said, the “wrong” number is usually pretty close. Maybe try to: Modify first, write after.
But, for the majority of gear, the numbers usually remain the same. A platypus, stuff sack, a tiny bic lighter, these won’t change.
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3 – Keep a tidy spreadsheet too.
I find that when I am packing, I rarely refer to my spreadsheet. If I need to decide on what to take (maybe it’s summer and the weather looks good), I can quickly get some data right on my windshirt as I compare it to my raincoat. It feels easier for me this way.
(also, I like the binder idea!)