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Thread: Measurements
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8th September 2010, 07:59 PM #1
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Measurements
Ok - I have a very simple and basic question.
If I needed an internal dimension of a box to be say 200x80x10mm thick and I was using through dovetails would this mean the overall length would be
200mm+20mm (10mm each side for the dovetails)+2mm (1mm each side to sand flush) = 222mm x 102mm (same allowance used for the above example) ?
Andy
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8th September 2010, 10:40 PM #2
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Personally I'd go for 220 x 100, and plane a bit of each side, if necessary, to get the joint flush.
If the internal dimension must be at least 200 x 80, I'd shoot for internal dimensions of 201 x 81 just to be sure.regards from Alberta, Canada
ian
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8th September 2010, 11:11 PM #3
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Ok - so I am right in saying you need to add the thickness of the timber x 2 to each length?
Originally Posted by ian
Andy
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8th September 2010, 11:22 PM #4
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Yes Andy, with through dovetails the timber on both sides goes through the adjoining pieces so the total length of each side has to have the sides (both) added as you say. 200 + 10 + 10 and as Ian said .5 mm to each side or even 1mm (you can always plane/sand some off) so 200 + 11 + 11 and then your other side would be 80 + 11 + 11.
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8th September 2010, 11:29 PM #5
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yep. internal measurements + two thicknesses of stock, but I wouldn't add anything. Maybe 1/2 a mm on each side (if you have to at all), otherwise you'll just cause yourself more work for no reason..
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8th September 2010, 11:30 PM #6
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Sorry Claw i didn't see your well sufficient answer, I clicked reply then went to grab a beer
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8th September 2010, 11:41 PM #7
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It happens
, I went the extra 1mm, it's sometimes hard to get .5mm depending on the persons skill level.
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8th September 2010, 11:57 PM #8
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Excellent, thanks Gents
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9th September 2010, 12:00 AM #9
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Our pleasure Andy, good luck with the box.
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