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Forum topic by 3285jeff posted 03-14-2015 10:58 PM 805 views 0 times favorited 6 replies Add to Favorites Watch
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152 posts in 1687 days

03-14-2015 10:58 PM

ok,, can you please tell me,,i have did a goblet and it looks fine,,but tonight when I tried to hollow it out there was a difference in the inside diamenter ,,what am I doing wrong,,it was thick on one side and narrow on the other,,and I just kept rechecking it thinking that might be my problem,,,but no luck,,,can anyone help,,

6 replies so far

View Nubsnstubs's profile


1282 posts in 1699 days

#1 posted 03-14-2015 11:01 PM

Your wood is starting to shrink. How long has it been wood instead of a tree? What type of wood is it? ....... Jerry (in Tucson)

-- Jerry (in Tucson)

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152 posts in 1687 days

#2 posted 03-15-2015 01:10 AM

it was cherry and maple glued up,,i got both pieces from a local hardwood store

View Tennessee's profile


2862 posts in 2483 days

#3 posted 03-15-2015 01:24 AM

+1 for Jerry’s comment, plus if you bought it from a local hardwood store, I’ve seen more than one of those that only air dries, and for dubious times.
You might not only be shrinking on one side, you might be expanding on the other as it regains moisture.
In other words, check your moisture if you have a meter. You might be surprised…

-- Tsunami Guitars and Custom Woodworking, Cleveland, TN

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152 posts in 1687 days

#4 posted 03-15-2015 10:55 AM

where do I get a moisture meter and what is the right moisture reading for dry wood,,

View bondogaposis's profile


4688 posts in 2320 days

#5 posted 03-15-2015 12:43 PM

Tangential shrinkage is roughly double radial shrinkage, so anything turned round when green winds up oval when dried.

-- Bondo Gaposis

View Bill7255's profile


427 posts in 2254 days

#6 posted 03-15-2015 12:43 PM

You can get one Amazon, Rockler, woodcraft. HF has them, but not very good. Price will depend on accuracy. Around 8% is a good number. Normall you would turn to rough leaving about 2x thickness of finished, set aside in paper bag, check moisture, then finish.

-- Bill R

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