Results 1 to 6 of 6

Thread: Biscuit strength

  1. #1

    Biscuit strength

    A recent post discussed the strength of various joints in a cabinet. Biscuits were much maligned there. So I dug out the magazine Wood November 2008 where extensive tests were made on various joint methods. True, Mortise and Tenon joints are still king, but biscuits weren't to shabby either. A red oak butt joint made with biscuits had a pull apart strength of 1000 pounds and a shear strength of 250 pounds. So how many bottles do you want to put into your cabinet? Plus the ease of using biscuits, give those critters a break.

    DKT

  2. #2
    Quote Originally Posted by Dietrich Trenner View Post
    So I dug out the magazine Wood November 2008 where extensive tests were made on various joint methods.

    DKT
    Sorry about the wrong date, it should have read November 2006.

    DKT

  3. #3
    Join Date
    Nov 2006
    Location
    Central CA
    Posts
    797
    I don't think these will hold very much. But they sure are yummy.......



    Click image for larger version. 

Name:	150px-Runny_hunny.jpg 
Views:	7 
Size:	14.9 KB 
ID:	22723
    Thanks, Mark.

    Custom Bonehead.

    My diet is working good. I'm down to needing just one chair now.

    "Just think how stupid the average person is, and then realize that half of them are even stupider!" --George Carlin

  4. #4
    Join Date
    Jan 2007
    Posts
    810
    Quote Originally Posted by Dietrich Trenner View Post
    .......I dug out the magazine Wood November 2008 where extensive tests were made on various joint methods. True, Mortise and Tenon joints are still king, but biscuits weren't to shabby either. A red oak butt joint made with biscuits had a pull apart strength of 1000 pounds and a shear strength of 250 pounds........
    I read that test also and came to the same conclusion that you did. M&T, biscuit, pocket screw, dowel, even plain glue joints tested just fine for more than the loads that would normally be applied to them. I'm not sure why we (readers and testers) focus on the breaking point load, when the chances of the joint ever seeing that maximum load are pretty slim.

    I would be more interested in a test that shows which joint is more durable under the constant flexing and loading/unloading that some furniture is subject to.

    Biscuits .... just my opinion here, and only from a woodworking hobbyist/amateur, but it seems to me that biscuits are used mostly for alignment, and the strength mostly come from the the glue joint. I know that the biscuit assists, but I don't think it carries the most of the load.

    cheers

    John

  5. #5
    Join Date
    Mar 2008
    Location
    new york city burbs
    Posts
    10,188
    My lack of knowledge and expertise in woodworking, is not something I try to hide. I am somewhere past beginner, but nowhere near craftsman. I'm somewhere in the middle.


    What I do notice though, is that alot of projects in current wood publications are using bisuits in different applications.
    Such as construction of {cabinets} and construction of cabinet door frames, face frames, and attachment of all these frames to the cabinets.

    While its obvious a MT joint is ten times stronger for a cabinet door, I believe the biscuit cutter is just a much faster and easier way out, but I don't necessarily feel the joint is not secure enough to hold instead of using MT joints.(or lap joints, etc). These are not real weight bearing joints, and in door construction for cabinets, or face framing, I believe the biscuits are a good way to go.

    I also understand that in stating the above, many here might look at me in the same way a 80 y/o pastry baker would look at a person bringing him Dunkin Donuts for a snack.
    Last edited by allen levine; 08-07-2008 at 09:05 PM.

  6. #6
    Join Date
    Nov 2007
    Location
    Bedford, KY
    Posts
    37
    Aint nuttin wrong with usin biscuits. I think they are plenty strong enough, and what ever you build will be 100 times stronger, than the cabinets from the Borg.

Similar Threads

  1. Real Strength Training
    By Darren Wright in forum Off Topic Discussion
    Replies: 12
    Last Post: 01-31-2012, 06:16 PM
  2. Attaching legs and structure strength
    By allen levine in forum Flatwork Project Showcase
    Replies: 34
    Last Post: 02-07-2009, 02:18 AM
  3. glueing up red oak, strength concerns
    By allen levine in forum General Woodworking Q&A
    Replies: 7
    Last Post: 08-07-2008, 02:44 AM
  4. A wood strength question to ponder............
    By Mark Rios in forum General Woodworking Q&A
    Replies: 10
    Last Post: 08-17-2007, 04:00 AM
  5. Floor Strength Question
    By Bill Grumbine in forum Off Topic Discussion
    Replies: 13
    Last Post: 12-27-2006, 01:03 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •