T Jones
I'll Lock Up
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I think I sized up a couple of 6 5/8. One was a stiff and thick felted Longhair Biltmore Western. I blocked this one in three stages, three different block sizes.Terry @T Jones took a 6 5/8 western to 7 1/4. I’ve taken a couple of 6 7/8 or even 6 3/4 wide brim black Borsalinos up to 7 3/4 without any issue, other than brim width loss. I was shocked at how easily those Borsalinos slipped over a 7 3/4 block.
Ask Terry, but I suspect that sizing it up in stages would be the best way to go.
Here's the Biltmore:
Before
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After : tall crowned mid ribbon
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...and this '50s era No. 1 Quality Stetson. The felt on this one was so nice that it stretched easily over my 7 1/4 block with no issues.
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After:
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I also sized up a 6 5/8 Resistol and a few 6 7/8 hats, 7, and 7 1/8 hats.