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Forum topic by stinger141jt posted 04-25-2009 06:03 AM 852 views 0 times favorited 2 replies Add to Favorites Watch
View stinger141jt's profile


8 posts in 3784 days

04-25-2009 06:03 AM

I have plans for a jet that I got from Gatto Plans but I want to increase its size to be larger, if i increase everything by, lets say, 2 inches how do i figure the the increase in the width of the wood. IE if original plans call for 1/8 thick wings and I go two more inches in size linear how do I compisate or figure for thickness?


-- saw dust makes tree huggers happy

2 replies so far

View Karson's profile


35120 posts in 4396 days

#1 posted 04-25-2009 06:22 AM

You would want to do it in the same ratio.

If it was 6” and you increased it to 8” you increased it by 33% 1/3 of the 6”. so if the wood was 1/8 for the wings then you would do 1/3 increase of the 1/8 1/8 = 3/24 You would increase that to 4/24 or 1/6”.

It would probably to do it easier if you converted it to thousands of an inch and then make the result something that you could cut. 1/6 would be close to 5/32 of an inch.

-- I've been blessed with a father who liked to tinker in wood, and a wife who lets me tinker in wood. Southern Delaware soon moving to Virginia †

View GaryK's profile


10262 posts in 3983 days

#2 posted 04-25-2009 06:26 AM

Lets say you start with something 10 inches and you want it 12 inches.

12 divided by 10 is 1.2 inches.

Multiply all your dimensions by 1.2 and you have your sizes.

I hate fractions so that is how I would do it.

In Karsons example above 8/6 = 1.33 so multiply everything by that.

Just round everything up or down to a simple number, even fractional if that’s what you are used to.

-- Gary - Never pass up the opportunity to make a mistake look like you planned it that way - Tyler, TX

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