frame thickness on Belle Isle

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FFRCOBRA
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frame thickness on Belle Isle

Post by FFRCOBRA » Wed Oct 10, 2012 9:33 am

Just got my Belle Isle plans from UPS yesterday and looked them over last night. The frames on the plans call for 1" net material. (with a note that up to 1 1/16" is acceptable).

I found some white oak for sale that states S2S, rough surfaced to 15/16".

Since white oak should be roughed up before gluing anyways, would this work? 1/16" undersized is a very small amount .

Or...do I get the 5/4 thick stuff (higher board-foot price) and plane it down? (read: tons of planing work)

Thanks guys- getting excited, but also a little overwhelmed by looking at the plans last night.

Craig

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billy c
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Re: frame thickness on Belle Isle

Post by billy c » Wed Oct 10, 2012 11:14 am

i would not want to leave the frames in the rough state. am sure they vary in thickness without going thru the planer. you will eat up tons more epoxy trying to encapsulate them too.
spending :shock: 25000 to build this. lumber cost is a drop in the bucket
get the right lumber and you will be a much happier camper.
-Billy
(insert Witty phrase here)
Billy's Belle Isle website

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jprice
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Re: frame thickness on Belle Isle

Post by jprice » Wed Oct 10, 2012 11:43 am

S2S should not be like rough sawn lumber. Both faces should be smooth planed. Granted, they will still have the planer marks, but they should still be smooth faces.

FFRCOBRA
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Re: frame thickness on Belle Isle

Post by FFRCOBRA » Wed Oct 10, 2012 1:07 pm

jprice wrote:S2S should not be like rough sawn lumber. Both faces should be smooth planed. Granted, they will still have the planer marks, but they should still be smooth faces.

Exactly- that was the reason for my question. S2S should be pretty smooth on both sides. The end product being 15/16 is the concern.

sands35
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Re: frame thickness on Belle Isle

Post by sands35 » Tue Oct 16, 2012 5:33 am

Basic engineering says that the strength of a beam is defined by:

I = ( B * H^3 ) / 12

B = base width of member
H = height of member

So loosing a 1/16" off the width won't do much. Just increase the height of the member by 1/16 and you are stronger then when you started.

(1st post - Hi!)

grumpyoldman
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Re: frame thickness on Belle Isle

Post by grumpyoldman » Tue Oct 16, 2012 8:29 am

Or laminate a 1/4" ply onto the side of the frame and accomplish the same for less than 5/4 stock and save waste.

MarkSent
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Re: frame thickness on Belle Isle

Post by MarkSent » Sun Sep 01, 2019 1:34 pm

What did you decide to do? I'm at the same junction. I have a ton of 3/4" mahogany...enough to make all the frames, but they are only 3/4" thick. I'm debating on:
A) just use the 3/4 as is
B) glue two 3/4" pieces together and then plane down to 1"ish
C) laminate some 1/4" plywood to the 3/4" frames.

Any suggestions?

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Bill Edmundson
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Re: frame thickness on Belle Isle

Post by Bill Edmundson » Sun Sep 01, 2019 2:10 pm

3/4 is good.

Bill
Mini -Tug, KH Tahoe 19 & Bartender 24 - There can be no miracle recoveries without first screwing up.
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