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Thread: Workbench Top Construction
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13th April 2008, 03:18 PM #1
Workbench Top Construction
I have a large quantity of recycled celery top pine size 2.25 x 7.50 inches (about 57 x 190 mm) and am thinking of using some of it for a classic work bench. The wood used to be a kids adventure castle where it air-dried for 10 years or so until the pc-mafia forced the council to replace it with plastic junk. Its now been in my shed for another ten+ years. Thus it should be thoroughly dry and dimensionally stable.
Although a pine, celery top is fairly heavy with density of 0.65 and is stronger than oregon. It also looks good.
Whilst I was exploring different means of joining the planks - dowelling, through bolting, loose tongue, etc - a friend suggested that it would be simpler, stronger, and put more mass into the table if I simply glued (preferably with epoxy) the 2.25" planks to an MDF base board.
Another friend says that such a bench top would probably split.
Who is right? And what would be the best way of making a bench top?
Cheers
Graeme
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13th April 2008, 03:30 PM #2
Graeme,
I'm not familiar with celery top pine, but if it is like most other timbers, I'd just joint it square and straight and glue it together. I don't see any need for dowels etc., unless you need them to maintain alignment while gluing.
I'd be very cautious of the idea of laminating it to MDF. It sounds like a recipe for trouble - either splitting or bending/cupping with seasonal moisture changes.
Chris
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13th April 2008, 05:38 PM #3SENIOR MEMBER
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If it's celery top pine, Graeme, it's valuable.
Perhaps too soft to use as a workbench top, but if it's all you have... ... ...
Cheers,
eddie
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14th April 2008, 01:41 PM #4
I would suggest ripping the planks down to about 40mm strips and re-gluing them together to the required width for your work top slab (are you going to build your bench with a tool well at the back?). This will give a more stable top than if you keep the timber at 7-8" wide planks. Not a huge issue, but worth considering.
Young kids cancels shed time
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15th April 2008, 06:58 PM #5
Thanks guys.
I bought 500 super feet the wood 10-12 years ago for a princely $1 per su ft and have subsequently used about three quarters of it. For those who don't know the species celery top pine is a Tasmanian rain forest pine that is generally considered second only to huon pine. It looks somewhat similar, works as well, takes glue better but does not have that intoxicating huon pine smell. Some even argue that its a better pine than huon.
My original attitude was that I have the wood, its thick and strong, so use it for the bench. Noting Eddie's comments on value I rang around a few suppliers: the cheapest quoted $32 per super foot. Seems celery top and huon pine still come in imperial sizes! Do I want to put timber with a replacement cost over $3,000 into a work bench?
Perhaps I should keep the celery top for more appropriate projects.
If so, then I need to think about other suitable timbers at a reasonable price. Last time I bought any timber the best value timbers in Hobart were myrtle and white sassafras (ie without any black heart which substantially increases the value). But all prices have increased exponentially since then as so much gets chipped.
Graeme
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