This thread got me thinking. Years ago I mentioned that pulling a cue in and out of a JB case could affect the finish, nobody agreed, or nobody responded, either way, there was nobody in agreement but here's my proof.
I bought my first Huebler in 1993, I then bought another identical Huebler from a pawn shop 2 years later (for half of what I paid for mine BTW). Both in perfect shape at the time. I sold the pawn shop cue to a buddy of mine. Over the next 10 years we played together 90% of the time (not exaggerating - we were on the same team), we both had Giuseppe cases. In 2004 (11 years after I bought mine, and 9 years after I bought the other one) I moved and put my cue in my closet for 14 years and rarely touched it. When I started playing again in mid 2018 he came to visit me and brought his cue. They were still very much identical, logo included. I then bought a JB case in September of 2018 but primarily played with a different cue so my original Huebler didn't get much use, I'm guessing 10%? Either way, I noticed a year ago my logo was getting worn down but didn't think too much about it. Fast forward to this thread and I had my buddy send a pic of his cue butt to see what his logo looked like. FYI - he has been playing the same cue since the 90's (on average - once or twice a week, probably less) and he's had the same Giuseppe case since then.
My cue is cue #1 in this pic and the bottom pic is his logo. I have zero doubt my logo has been worn down due to my JB case. That pic was taken years ago, it's even worse now, I'll try to get a better pic tomorrow. That being said, it probably lost its finish long ago; however, if the logo has been worn down, the finish will also get worn down and then the logo.
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And here is his logo. Disregard the broken butt, it cracked a long time ago (decades) and recently fell apart and he asked me how to fix it about a month ago. Clearly, it needs replaced. But, you'll notice his has some fairly decent marks that appear to be from being hit on something where mine is simply being worn away. Again, I'll try to get updated pictures of mine.
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Do I think JB cases are the some of the best at keeping your cues safe - yes, do I think the tight tolerances affect the finish - yes. I'm not sure I have a final opinion yet but in the meantime I will continue using my JB case.