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Workbench Plans

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Delta KJ
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Does anyone have any plans for a heavy duty workbench? The plans I find online are not what I consider "heavy duty". I want to build two 7'x3' workbenches but I am flexible regarding size.
Thanks.
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Mon, Mar 26, 2007 11:11 PM
SJ
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I don,t have any plans for a HD one but at the dealer shop ours were made with 4"X4" legs with 2" planks for the top & also 2"X 8" or you could use 10" for around the sides below the top for support.Also a shelf could be installed toward the floor up about a ft. off the floor. Also a low backing board was installed across the back so nothing would roll behind the bench when your working on it. Also some of ours had a sheet metal top installed on the top for HD work on them to protect the boards but thats optional.
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Tue, Mar 27, 2007 12:00 AM
ccjersey
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Reply to SJ:
I don,t have any plans for a HD one but at the dealer shop ours were made with 4"X4" legs with 2" planks for the top & also 2"X 8" or you could use 10" for around the sides below the top for support.Also a shelf could be installed toward the floor up about a ft. off the floor. Also a low backing board was installed across the back so nothing would roll behind the bench when your working on it. Also some of ours had a sheet metal top installed on the top for HD work on them to protect the boards but thats optional.
I have seen 26 ga sheetmetal on top of wood workbench top, and it never stays flat long when you drop heavy castings on it etc. I would spring for a piece of 10ga plate especailly if you want to weld or cut on them. It makes a reinforced place to fasten a vise too.


Will these be freestanding or fastened along a wall? I like the proportions ok, but if you put a vise on it, it won't be as steady as you would want unless it's attached to the floor or building posts. (Bottom shelf full of junk helps that too)
D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄
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Tue, Mar 27, 2007 12:39 AM
SJ
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CC yes you don,t want thin metal put on the top as it would not take the abuse. The ones at the dealer shop that we had were heavy metal over the planks but don,t know how thick it was as they were made up when I started there & they wouldn,t warp or anything else no matter what you did on top of them.I had two in my engine rebuilding bay & the one was about 10 ft. long with just a plank top & then there was a heavy smaller all metal one to do smaller jobs on & it had wheels on one end & handles on the other side so you could move it around.This one had a vice on it & then the big HD vice in the bay had a heavy steel base it was mounted on & the base was welded to a support beam in the shop building construction.
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Tue, Mar 27, 2007 1:29 AM
BITJAM
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Reply to SJ:
CC yes you don,t want thin metal put on the top as it would not take the abuse. The ones at the dealer shop that we had were heavy metal over the planks but don,t know how thick it was as they were made up when I started there & they wouldn,t warp or anything else no matter what you did on top of them.I had two in my engine rebuilding bay & the one was about 10 ft. long with just a plank top & then there was a heavy smaller all metal one to do smaller jobs on & it had wheels on one end & handles on the other side so you could move it around.This one had a vice on it & then the big HD vice in the bay had a heavy steel base it was mounted on & the base was welded to a support beam in the shop building construction.
4' x 8' x 1'' Steel drop a D 2 on it will still be flat . Frend made one good table
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Tue, Mar 27, 2007 9:14 AM
Philip
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Reply to BITJAM:
4' x 8' x 1'' Steel drop a D 2 on it will still be flat . Frend made one good table
A good question to put on the Shop floor talk forum. A piece of 1/4"plate over planks with the vise bolted to it works for me. The shelf below and the backing board are a great idea. Phil
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Tue, Mar 27, 2007 6:51 PM
biggastractor
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I have seen a couple of very nice sturdy benches built from stainless steel. Used restaurant equipment is 10 cents on the dollar. It's cheap. Just find some long pieces such as ones near a dishwasher and build away. You can beef it up and weld it if necessary. Good Luck
Biggastractor
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Tue, Mar 27, 2007 7:45 PM
Walt66A
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Reply to biggastractor:
I have seen a couple of very nice sturdy benches built from stainless steel. Used restaurant equipment is 10 cents on the dollar. It's cheap. Just find some long pieces such as ones near a dishwasher and build away. You can beef it up and weld it if necessary. Good Luck
Biggastractor
The ones we have in our shop are 4' X 8' X 1/2" tops with 4X4, 1/4" wall legs,and 2X2" braces, all steel. You can darn near park a 9 on them!
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Tue, Mar 27, 2007 8:04 PM
Delta KJ
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Reply to Walt66A:
The ones we have in our shop are 4' X 8' X 1/2" tops with 4X4, 1/4" wall legs,and 2X2" braces, all steel. You can darn near park a 9 on them!
Thanks for your responses. If I don't get any specific plans, I plan to use a solid core door (1.75" thick) for the top with 10 guage galvanized rolled steel on top of the door. 4"x6" for the legs and 4"x4" for all supports using lap joints at all joints. I hope that I don't have to draw the plans myself... plans would be great.
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Tue, Mar 27, 2007 9:58 PM
Delta KJ
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Reply to Delta KJ:
Thanks for your responses. If I don't get any specific plans, I plan to use a solid core door (1.75" thick) for the top with 10 guage galvanized rolled steel on top of the door. 4"x6" for the legs and 4"x4" for all supports using lap joints at all joints. I hope that I don't have to draw the plans myself... plans would be great.
The benches will be free standing and other than the 10 gauge galvanized rolled steel top, will be made of wood.
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Tue, Mar 27, 2007 10:03 PM
dpendzic
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Reply to Delta KJ:
The benches will be free standing and other than the 10 gauge galvanized rolled steel top, will be made of wood.
Delta KJ--if you are going to have a 3 x 7 bench i would suggest a leg at midspan---the bending moment on your 4x4 supports is pl/4--so at a 7 ft span for say a 1000# load the bending moment would be 7' x 12" x 1000/4=21000" lbs. The section modulus of a 4 x 4--assuming dressed lumber would be 3.5 x 3.5 x 3.5/6=7.14 in cube

the bending stress would then be 21000/7.14=2941 psi- 😮 --you really don't want to go higher than about 1500 psi for bending stress on timber.
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Wed, Mar 28, 2007 3:10 AM
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