LumberJocks

How strong is mahogany?

  • Advertise with us

« back to Wood & Lumber forum

Forum topic by wwbob posted 1398 days ago 3625 views 0 times favorited 9 replies Add to Favorites Watch
View wwbob's profile

wwbob

107 posts in 1479 days


1398 days ago

Topic tags/keywords: mahogany small bench wood strength question arts and crafts

I’m making a small bench. Design from Wood Magazine, October 2010, page 28. The design calls for 3/4 inch quartersawn oak. I ran across some mahogany that was cheaper and am planing to substitute mahogany for oak.

Any problems?

-- "I like the quiet I hear." - Channing, age 4


9 replies so far

View wseand's profile

wseand

2116 posts in 1646 days


#1 posted 1398 days ago

You can google the janka hardness for mahogany it should around 1500 to 2000 on the hardness scale pretty hard. I beliieve it is harder than oak. So I wouldn’t see a problem.

-- Bill - "Freedom flies in your heart like an Eagle" Audie Murphy

View wseand's profile

wseand

2116 posts in 1646 days


#2 posted 1398 days ago

Woodbin.com also has a wood strength calculator that can be a real help

-- Bill - "Freedom flies in your heart like an Eagle" Audie Murphy

View NBeener's profile

NBeener

4806 posts in 1778 days


#3 posted 1398 days ago

I think it depends on the species OF Mahogany, though.

For example: African Mahogany’s Janka is 830.

If you know the species, take a look at the chart, here

If you don’t know the species, maybe you can post some pics of the wood, and … people who know more than I do … can chime in :-)

-- -- Neil

View Keith Fenton's profile

Keith Fenton

310 posts in 1524 days


#4 posted 1398 days ago

I know there are lots of species that some people call mahogany, some of which aren’t mahogany at all. The only mahogany that I’ve worked with isn’t as strong as oak and is more than triple the price of quatersawn oak.

Here’s a quote i found when searching google.
“False Mahoganies
  1. The high demand for mahogany products encourages logging and manufacturing industries to create mahogany names for trees which are not true mahoganies. Lauan, a widespread tree in the Philippine forests, is marketed in the United States as Philippine mahogany. Dozens of different species are marketed under that same arbitrarily chosen name. Other variety names are either invented, like the term royal mahogany, or refer to the locale where a tree was grown.”

Read more: Types of Mahogany Wood | eHow.com http://www.ehow.com/about_5330156_types-mahogany-wood.html#ixzz11EUM0dlv

-- Scroll saw patterns @ http://www.sheilalandrydesigns.com

View wwbob's profile

wwbob

107 posts in 1479 days


#5 posted 1398 days ago

This mahogany is recycled. You can read about it via this web address:

http://lumberjocks.com/topics/20285#reply-208403

Or search lumberjocks for 100 year old 4/4 mahogany.

-- "I like the quiet I hear." - Channing, age 4

View wwbob's profile

wwbob

107 posts in 1479 days


#6 posted 1398 days ago

Wow, thanks for the quick responses. I don’t know what kind of mahogany it is. I’ll be careful with the bench once it’s done.

Thanks again,
Bob

-- "I like the quiet I hear." - Channing, age 4

View richgreer's profile

richgreer

4522 posts in 1679 days


#7 posted 1398 days ago

I don’t want to start an argument here but hardness and strength are 2 different concepts. For a bench, the primary consideration is probably strength. The Janda index tells you about hardness and it tells you nothing about strength.

From my memory, I believe the Janda Index on typical mahogany is between red oak (1400) and white oak (1600) but, as I said, that means very little with respect to strength.

It may help to know how a janda index is calculated. A standard size metal ball (don’t remember the size). The index is the number of pounds of pressure that is needed to push the ball half way into the wood.

Regardless of all of this, I would have no concern about using mahogany instead of oak.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View Mike Fritz's profile

Mike Fritz

46 posts in 1427 days


#8 posted 1398 days ago

The best and strongest mahogany I ever used is Honduras Mahogany.I’ve tried the others N G.

-- Mike Fritz, Verona, NJ

View William's profile

William

8931 posts in 1447 days


#9 posted 1398 days ago

I know not a single thing about janka, hardness, strength, or any of the other related terms to describe the different properties of wood. I will tell you what I do know from my personal experience though working with oak (red, white, pin) and mahogany (real, honduras, spanish, royal, among others).
If I had my choice between oak and mahogany for building furntiture, I’ll choose the mahogany every time. I don’t know if it is stronger than oak or not. I do know that I’ve never had a problem using it in a load bearing situation. Additionally, in my opinion, I think that mahogany is a better looking wood.

-- http://wddsrfinewoodworks.blogspot.com/

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase