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Floating Breadboard Ends on a Workbench??

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Forum topic by David White posted 706 days ago 2334 views 0 times favorited 7 replies Add to Favorites Watch
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David White

112 posts in 1884 days


706 days ago

Topic tags/keywords: workbench breadboard ends humidity

Hi All

I am starting to design a cabinet makers workbench. The top will be 85mm thick (3.5”), laminated from 1500×85 x 50mm boards (that’s roughly 60×3.5×2”). Given that this means that the cross grain direction will now be vertical rather than horizontal, will it be necessary to have floating breadboard ends or can I just glue them across their entire length?

Other relevant information: The primary wood used will be New Zealand Beech – this is a relatively stable hardwood. The breadboard ends will be Jarrah. Where I live (near Auckland) the humidity levels are relatively constant (between 70 to 85%) throughout the year. We’re basically warm and humid in the summer and cool and humid in the winter.

Thanks in advance.

David

-- http://thecraftsmanstudio.com


7 replies so far

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lysdexic

4779 posts in 1226 days


#1 posted 705 days ago

If your question is do you NEED end caps, then I say no. Remember when you face laminate your boards the cross grain direction will now be vertical. So theoretcially the expansion will be vertical.

Alot of benches are made without endcaps (breadboard) ends. Alot have them. My bench, that is nearing completion, actually has both. It is based on te TWW/Benchcrafted split Roubo plans. The end cap serves an important function for the wagon vise in this case. Otherwise, they are decorative. That said, I prefer the end cap and will probably put an end cap on the back slab. But I am purely superficial and only care about looks.

-- It isn't the mountains ahead to climb that wear you out; it's the pebble in your shoe. - Muhammad Ali

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David White

112 posts in 1884 days


#2 posted 705 days ago

Hi lysdexic,
Thanks for the comments. My question is not so much about the need for endcaps (which I want) but their attachment. Generally I would not glue a breadboard end accross its entire length in order to allow for wood movement, but in this case I wonder if it would be ok to do that give the grain direction?

To explain things a different way, I want to use endcaps, but I don’t want to bolt them on.

-- http://thecraftsmanstudio.com

View Loren's profile

Loren

7265 posts in 2251 days


#3 posted 705 days ago

Drawings, photos and comments about my skirted bench design
here: http://lumberjocks.com/Loren/blog/27597

-- http://lawoodworking.com

View Mauricio's profile

Mauricio

6749 posts in 1754 days


#4 posted 705 days ago

David I get what your saying, if you have the grain of the top running vertically and you attach a flat sawn board on the ends grain also running vertically, your wondering if you can just glue it on without using bolts? Is that right.

If so I think you still need some kind of mechanical fastener because the end grain joint will be weak. I’m using a spline with bolts. (My top is quartersawn red oak), the end caps are flat sawn so the grain is also vertical.


You could just do what Roy Underhill did on his splayed leg Roubo and cut a tongue on the end that matched a groove on the end cap. It would be easier than a full blown breadboard end.

-- Mauricio - Woodstock, GA - "Confusion is the Womb of Learning, with utter conviction being it's Tomb" Prof. T.O. Nitsch

View lysdexic's profile

lysdexic

4779 posts in 1226 days


#5 posted 705 days ago

David, sorry I misunderstood you. I’ve always seen end caps attachted with bolts/ screws through oblong holes to allow movement. However, my experience is limited.

-- It isn't the mountains ahead to climb that wear you out; it's the pebble in your shoe. - Muhammad Ali

View dbray45's profile

dbray45

2482 posts in 1380 days


#6 posted 705 days ago

When I build mine, the plan is use a large dovetail the entire length (for strength) on the end and a single bolt in the middle to keep it from sliding – no glue.

This will allow the the wood to move but still keep things together.

-- David in Damascus, MD

View Bertha's profile

Bertha

12951 posts in 1296 days


#7 posted 705 days ago

^I’m planning the same as David. Big sliding dovetail. .
But I am purely superficial and only care about looks.
=-lysdexic
.
Me too.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

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