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Inches to milimeters - 12/23/2003 10:14:06 PM   
serendpt


 

Posts: 9
Joined: 12/5/2003
From: Petaling Jaya, MALAYSIA
Status: offline 		Was about to try my hand at building from a plan, but immediately ran into a problem. So far, all of the balsa sheets I have found in the local (bear in mind, 'local' to me means Malaysia) hobby shops are measured in millimeters, and aren't really as close to the specified thicknesses as I'd like them to be (eg 1/16" is 1.5875mm, but I can only find 1.5mm) and was wondering whether it was still safe to substitute the thicknesses.
       Post #: 1

RE: Inches to milimeters - 12/23/2003 10:54:27 PM   
parabellum



Posts: 227
Joined: 10/30/2003
From: La Habra, CO, USA
Status: offline 		probably safe.

or mail order from American source.
balsa is light, so shipping shouldn't be a huge problem.

(in reply to serendpt)
       Post #: 2

RE: Inches to milimeters - 1/3/2004 10:12:12 AM   
Willdo


 

Posts: 500
Joined: 7/31/2003
From: Auckland, NEW ZEALAND
Status: offline 		I don't think that 0.1mm is going to make much difference, you could hardly even see that measurement! and I'm sure that the quality control people would have trouble keeping it inside that tolerance. ( forget about the third and fourth digits past the decimal point).
Also you could easily get different quality and strength between sheets of balsa which would probably be much more significant, but is usually overlooked, I say go for the stuff you can get easily.

< Message edited by Willdo -- 1/3/2004 10:14:16 AM >

(in reply to serendpt)
       Post #: 3

RE: Inches to milimeters - 1/3/2004 3:53:38 PM   
CafeenMan



Posts: 3907
Joined: 1/19/2003
From: Spring Hill, FL, USA
Status: offline 		You can substitute the closest size wood with no problems. I was stationed in Germany for a few years and ended up with a large stack of metric wood. I keep it separate from my other wood, but I use some of it in most models I build. I just make sure I make symmetrical parts from the same wood.

In other words, if I sheet one aileron with 1.5 mm then I do the same to the other.

_____________________________

Work is what I do for the love of it. A job is how I pay for it. :)
Please visit AirfieldModels.com

(in reply to Willdo)
       Post #: 4

RE: Inches to milimeters - 1/6/2004 6:43:06 AM   
serendpt


 

Posts: 9
Joined: 12/5/2003
From: Petaling Jaya, MALAYSIA
Status: offline 		Thanks, everyone. I guessed as much it would be ok, but it gives me peace of mind to get the go ahead from experienced builders such as yourselves.

(in reply to serendpt)
       Post #: 5

RE: Inches to milimeters - 1/6/2004 10:57:49 PM   
Gaui



Posts: 41
Joined: 7/11/2002
From: Akureyri, ICELAND
Status: offline 		Here in Iceland we usually get balsa in millimetres and most of our plans come in inches, so here are the substitutions we make:

1/32" = 0.8 mm
1/16" = 1.5 mm
3/32" = 2.0 mm
1/8" = 3 mm
1/4" = 6 mm
1/2" = 12 mm

As you see these are very rough approximations, but since I have built models along these lines for many years, I can assure you this works. Most of the times the millimetres are smaller than the inches (3/32 is actually 2.38 mm) so there may be some saving of weight, but sometimes we substutute a thicker sheet, like we may sheet a wing or a fuz with 3 mm balsa instead of 3/32" and then feel free to sand as much as we like.

gaui

(in reply to serendpt)
       Post #: 6

RE: Inches to milimeters - 1/7/2004 1:49:06 AM   
Grumpy Monkey



Posts: 439
Joined: 2/12/2002
From: manville, NJ, USA
Status: offline 		Here is great utility to DL. It does all the conversions you would need and then some.
The program is called convert....http://www.joshmadison.com/software/convert/

Warren

(in reply to Gaui)
       Post #: 7

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