Help needed: calculating area of side walls

[Larry C]

I am using Mike's Ultralight profile for my build. The walls will be sandwich construction. The inner and outer skins will be wood strips.

Would someone please help me calculate the actual square footage area of the Ultralight profile. I need to figure the lineal footage of 3/4" wide strips to mill.

Here's the link to the PDF:

http://www.mikenchell.com/TheUltralight.pdf

Any help greatly appreciated...

Larry C

[Miriam C.]

Just to be sure I have this right, you want the area to get linear feet? I would think a guess would come pretty close but If you figure at 4'x8' you can probably use the extra to do the inside of the galley or cabinet doors.....

Better idea. If you look on page 4 you will see a grid. It is iin 3" blocks. So add the number of 3" blocks to leave out and subtract from the area of 4x8.... That will get you even closer....

[bobhenry]

On the 3" grid, if you add up all the verticals and the recipricals of the nose and tail dimensions you get 1163 linial inches of 3" board or 3489 sq inches of area if you divide that by .75 (your strip width) that is 4653 running inches or 388 feet of 3/4 strips per side


Ouch my head hurts

[Miriam C.]

On the 3" grid, if you add up all the verticals and the recipricals of the nose and tail dimensions you get 1163 linial inches of 3" board or 3489 sq inches of area if you divide that by .75 (your strip width) that is 4653 running inches or 388 feet of 3/4 strips per side


Ouch my head hurts

That is why you add up the cut away......

[bobhenry]

:o Just to be sure I have this right, you want the area to get linear feet? I would think a guess would come pretty close but If you figure at 4'x8' you can probably use the extra to do the inside of the galley or cabinet doors.....

Better idea. If you look on page 4 you will see a grid. It is iin 3" blocks. So add the number of 3" blocks to leave out and subtract from the area of 4x8.... That will get you even closer....

24.2291666666 sq ft needed per side if you are interested

[bobhenry]

You figured the 7.7708 sq ft that wasn't there and I figured what was there. He wanted to know what was needed not what was being thrown away

Girls are so backwards !!




Just kidding Auntie M

proves there really is more than 1 way to skin a cat

[NathanL]

Just out of curiousity I laid it out in AutoCad real quick and came up with 26.4301 square feet or 3805.93 square inches for one side, so you would need to double it.

[bobhenry]

Just out of curiousity I laid it out in AutoCad real quick and came up with 26.4301 square feet or 3805.93 square inches for one side, so you would need to double it.

or 423 l/f of 3/4 strips....

388 vs 423 l/f

ya mean I was short by over 8%

I want a second opinion

[Larry C]

Thanks everyone.....
I knew I would get a quick answer. Actually I will need 4 times the figure(s) you arrived at as I will be stripping both the inside and outside.
It looks like I will need approx 110 sq ft if I figure 10% waste.

Now that I have you attention, here's another problem to solve:

My strips will be milled to a final thickness of 1/8", the saw blade is 1/16",
and to allow for final planing, I should add another 1/32" to each strip.
If I mill my strips from 1x6X8 lumber (3/4" x 5-1/2" X 8') how many boards will I need to get approx 1800 ft. of strips.

Do you feel like your being used

Larry C

[NathanL]

While not doing a lot of math and basically ignoring your numbers....

I know when cutting strips from cedar for cedar strip boats etc...the rule of thumb is you loose about 30%.

[sdakotadoug]

It also depends on the width of the curf of the saw blade. I used a thin kerf when I cut the strips for my cedarstrip canoe. A Frued Diablo 7.5 inch worked great in my 10 inch table saw. Doug

[doug hodder]

Now that I have you attention, here's another problem to solve:

My strips will be milled to a final thickness of 1/8", the saw blade is 1/16",
and to allow for final planing, I should add another 1/32" to each strip.
If I mill my strips from 1x6X8 lumber (3/4" x 5-1/2" X 8') how many boards will I need to get approx 1800 ft. of strips.

Do you feel like your being used

Larry C

So your total thickness required, including kerf, per strip is 7/32" rounded to .22" divided into 5.5" wide= 25 strips per board x 8'= 200'/board. x9 boards =1800'. I'd do up a bunch of extras if'n it were me...who knows what they will do once they all decide to dry....Just sayin'. 9 boards is under ideal conditions....no knots, voids, pitch pockets, yada yada yada....and everything is usable and perfect. Doug

[Juneaudave]

I'm not positive that my thickness planer would reliably go to 1/8 inch even though it's spec'd to plane to 3/32. Let us know how that goes...

[doug hodder]

Dave...what I do is that I have a piece of melamine like 10 x 18"x 1/2" with an edge on it's bottom so that it hangs up on the front of the input side of the planer tray and runs full length under the knives. That takes up a lot of the extra space so you can dial it down to really close tolerances. Doug

[Larry C]

I'm not positive that my thickness planer would reliably go to 1/8 inch even though it's spec'd to plane to 3/32. Let us know how that goes...

Dave, I regularly plane strips to 1/8", but I think that's the limit unless I use Doug's great idea.

This is the planer I have:

http://www.amazon.com/Makita-2012NB-12- ... 006&sr=8-2