End cut strength - Woodworking Talk - Woodworkers Forum
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post #1 of 9 Old 04-03-2020, 10:37 AM Thread Starter
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End cut strength

I'd like to make a panel of end cut 3"x 3"x 1/4" octagons. It will be reinforced on the bottom but will not have a full back panel. IOW, the little squares will be open.

I know that all end cuts are weak, but is there any wood that is particularly stronger for this?

I'm thinking about using a mahogany. I will need @ 15 board feet for the entire project, but will need at least 18" of 4"x4".

I'd rather not spend $$ on a foreign exotic.

Thanks for any suggestions, questions I should consider, sources I should explore, etc.
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post #2 of 9 Old 04-03-2020, 11:24 AM
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If you're talking about Genuine Honduras Mahogany then that was pretty pricey the last time I checked.

That aside, will there be any lateral force on this or does it just need to support its own weight? The advantage is that the glue joints will all be edge or face grain and that will be fairly strong. Will the octagons be open, as well, or just the squares remaining where the octagons touch one another?

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post #3 of 9 Old 04-03-2020, 11:31 AM
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I do not understand what you mean about end cuts being weak? In what way do you need them to be strong. Glue joints involving end grain are not strong. If you are gluing these pieces together you are not gluing end grain.


More information needed.


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post #4 of 9 Old 04-03-2020, 11:45 AM
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Am I visualizing this correctly?

End cut strength-octagons-wwt-don-niederfrank.jpg

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post #5 of 9 Old 04-03-2020, 12:02 PM
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Quote:
Originally Posted by Don Niederfrank View Post
I'd like to make a panel of end cut 3"x 3"x 1/4" octagons. It will be reinforced on the bottom but will not have a full back panel. IOW, the little squares will be open.

I know that all end cuts are weak, but is there any wood that is particularly stronger for this?

I'm thinking about using a mahogany. I will need @ 15 board feet for the entire project, but will need at least 18" of 4"x4".

I'd rather not spend $$ on a foreign exotic.

Thanks for any suggestions, questions I should consider, sources I should explore, etc.

How large or what size is the finished panel?
Are you cutting the 3" octagons from a 4" X 4"?
Why not use the full 4"?
A mahogany 4" X 4" may be hard to obtain?
In fact any "exotic" hardwood species, unless it's for turning may be hard to find.
I would look for pieces/blanks for turning:
https://www.cookwoods.com/collections/vessel-blanks

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by difalkner; 04-03-2020 at 02:35 PM. Reason: fixed quote
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post #6 of 9 Old 04-03-2020, 12:14 PM
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many pallets are made from exotic woods and have rough sawn 3x3 stringers
you'll need a full frame or back to keep it from falling apart
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post #7 of 9 Old 04-04-2020, 04:35 PM Thread Starter
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David, et al.

Thanks for all you insights and questions.

David, that's exactly what I'm thinking about except 4x6. It will be a lower shelf for an end table. I will reinforce it with six short pieces crossing four of the octagons and glued to the underside of the frame to which the panel will be glued via a 1/4"x1/4" rabbet. My concern was that the exposed edges of the octagons would be prone to chipping off.

I've decided two things. 1) Not to worry. 2) Hickory.

Now I just have to wait until the hardwoods place opens up again. :-)
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post #8 of 9 Old 04-04-2020, 05:09 PM
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Quote:
Originally Posted by Don Niederfrank View Post
David, et al.

Thanks for all you insights and questions.

David, that's exactly what I'm thinking about except 4x6. It will be a lower shelf for an end table. I will reinforce it with six short pieces crossing four of the octagons and glued to the underside of the frame to which the panel will be glued via a 1/4"x1/4" rabbet. My concern was that the exposed edges of the octagons would be prone to chipping off.

I've decided two things. 1) Not to worry. 2) Hickory.

Now I just have to wait until the hardwoods place opens up again. :-)

Try www.walllumber.com. They are primarily a mail order dealer and may be open.


George
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post #9 of 9 Old 04-04-2020, 06:54 PM
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4 x 6 ...?`

Quote:
Originally Posted by Don Niederfrank View Post
David, et al.

Thanks for all you insights and questions.

David, that's exactly what I'm thinking about except 4x6. It will be a lower shelf for an end table. I will reinforce it with six short pieces crossing four of the octagons and glued to the underside of the frame to which the panel will be glued via a 1/4"x1/4" rabbet. My concern was that the exposed edges of the octagons would be prone to chipping off.

I've decided two things. 1) Not to worry. 2) Hickory.

Now I just have to wait until the hardwoods place opens up again. :-)



OK, 4 X 6 what? inches or feet? On what part, the shelf or the workpiece?

Why use a 4 X 6 rectangle if that's what you want to make your end cuts from?

A 4" square would be more ecpnomical/practical use of the material. Why pay for the extra 2" and not use it all?



If you leave the small squares open, small stuff can fall through and they will collect dust and be difficult to clean. If you fill the squares with small square stock of a contrasting color it will look great and you won't have the above issue and it will be stronger since you are not using a backer ..... but now you could since it won't show but add a whole lot more strength.

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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