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View Dave Rutan's profile

Need help from metric woodworkers

by Dave Rutan
posted 08-26-2016 09:37 PM


7 replies so far

View JeffP's profile

JeffP

573 posts in 1900 days


#1 posted 08-27-2016 12:03 PM

I’m bumping this, as it is deep into the second page and in jeopardy of falling off the radar with no answers. I’m curious to see answers!

-- Last week I finally got my $*i# together. Unfortunately, it was in my shop, so I will probably never find it again.

View ksSlim's profile

ksSlim

1302 posts in 3398 days


#2 posted 08-27-2016 01:29 PM

I have noticed that sheet goods who’s country of mfgr. are off coast, seem to measure odd mm thickness.
ie. 3/4 ply is actually 19 mm.
I too will be dropping by to see the answers.
Thanks for asking the questions.

-- Sawdust and shavings are therapeutic

View Texcaster's profile

Texcaster

1286 posts in 2182 days


#3 posted 08-27-2016 01:48 PM

In Australia cabinetmakers work in millimetres and metres. Centimetres aren’t used at all.

When buying rough timber by the m3, you pay for nominal dimensions ex: 38mm (1 1/2 in) expect around 32mm dressed. 50mm (2 in) expect 45mm dressed. Sold in bound packs, depending on your order.

Two prices, broken pack, you select, more expensive. Or buy an unbroken pack. Unbroken packs can be 1m3 but usually 2 to 3 cubes.

Cabinet timber from the big box stores is sold dressed and by the lineal metre. The dressed dimensions are close to the advertised dimensions.
ex: 18mm x 180mm x 2.1m is 18mm x 180mm x 2.1m. or very close.

Lengths graduate by 100mm ex: 1m, 1.1m, 1.2m etc.

-- Mama calls me Texcaster but my real name is Mr. Earl.

View shipwright's profile

shipwright

8380 posts in 3306 days


#4 posted 08-27-2016 02:06 PM

In Canada a 2×4 is still a 1 1/2” x 3 1/2” (on a good day) and plywood is still 4’x8’ but sometimes it is sold a 18mm or 12mm instead of 3/4” or 1/2”. The thickness hasn’t changed, just the numbers. I think it is because of the massive amount of cross border trade. The American market is much bigger so it dictates the standards.

-- Paul M ..............the early bird may get the worm but it’s the second mouse that gets the cheese! http://thecanadianschooloffrenchmarquetry.com/

View miketheknife's profile

miketheknife

2 posts in 1147 days


#5 posted 08-27-2016 02:15 PM

I’m from & live in the UK. & boards are priced & sold in metric Metres by cubic metres (m3) , the thickness is of planks is always in mm.

View Texcaster's profile

Texcaster

1286 posts in 2182 days


#6 posted 08-27-2016 02:58 PM

Texcaster wrote

“When buying rough timber by the m3, you pay for nominal dimensions ex: 38mm (1 1/2 in) expect around 32mm dressed. 50mm (2 in) expect 45mm dressed. Sold in bound packs, depending on your order.”

Correction

“When buying rough timber by the m3, you pay for the ROUGH dimensions ex: 38mm (1 1/2 in) expect around 32mm dressed. 50mm (2 in) expect 45mm dressed. Sold in bound packs, depending on your order.

-- Mama calls me Texcaster but my real name is Mr. Earl.

View Dave Rutan's profile

Dave Rutan

1778 posts in 2696 days


#7 posted 08-27-2016 06:56 PM

Thanks for the replies thus far!

It’s interesting that so far the ‘metrification’ of lumber dimensions is simply a new measurement of the imperial standard. I wish I could find that chart I saw from the lumber company in Germany where the ‘standard’ sizes were in even centimeters.

-- Ni faru ion el ligno!

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