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Work Bench Build - Attaching the Top

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Forum topic by Kurt T. Kneller posted 04-08-2017 02:02 AM 449 views 0 times favorited 3 replies Add to Favorites Watch
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Kurt T. Kneller

126 posts in 1201 days


04-08-2017 02:02 AM

Hi all,
I am beginning to breakdown my rough lumber to start milling for build my version of Matt Kenney’s Monster Workbench. Here is my rendition.

My question is what do you think the best method is for attaching the top to the base?
The top is approximately 72”L X 26”W X 3”T. The top and base are made from hard white maple.
I was thinking that all I need are (2) lag bolts in total. (1) in the center of each of the base top supports fastening to a common board in the top. This should be enough to secure the top and allow for expansion (I think).

What are you thoughts?

Thanks in advance.

-- Start with ten, end with ten.......


3 replies so far

View rwe2156's profile

rwe2156

2714 posts in 1317 days


#1 posted 04-08-2017 03:48 PM

I don’t think you will get that much expansion if you’re gluing the boards up as shown.

If you’re worried about it use an oblong hole.

-- Everything is a prototype thats why its one of a kind!!

View JBrow's profile

JBrow

1274 posts in 757 days


#2 posted 04-08-2017 07:20 PM

Kurt T. Kneller,

My natural preference would be 4 lag screws to hold the top in place on the base, but for this bench 4 lag screws may be unnecessary (the 2 screws you suggest is probably enough). It seems to me most of the forces applied to the top and that require resisting would be lateral forces, for example when hand planning. The other force would be downward, from things setting on the bench. In both cases the 2 lag screws placed as you described would probably be enough.

The workbench looks like it will be heavy so once it finds a home, I doubt it will be moved. But then if the workbench will be moved from time to time, it will likely be done so by lifting by the top. In this case, 4 lag screws in elongated holes suggested by rwe2156 would probably work better; given the weight of the base.

View JayCee123's profile

JayCee123

196 posts in 601 days


#3 posted 04-08-2017 07:40 PM

Similar workbench, slightly longer, very heavy. Top fits onto 4 – 3/4” dia dowels, 2 on each leg set. Dowels project about an inch into the table top slab.
Just a side note:
I wanted it to be very stable when on the floor (for hand planing work), but also wanted to be able to reposition the workbench when necessary. I fabricated what’s called a “stage lift,” the bench legs are attached to the lift. Normally the workbench legs sit on the floor. When I want to move the bench I press down on the lift lever and it raises up off the floor enough for me to spin it around the dance floor. When I have it where I want it I just reposition the lift lever, it goes down to the floor. Ready for another round.

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