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Welding Table Retrofit

kf4zht

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Joined
Mar 20, 2008
Messages
712
Location
Calhoun, GA
Back in college I built a welding table. Frame was angle and 2x2 square tubing, put a shelf on the bottom, clamped a vise on it and was happy.






Except the top, it was made from a double layer 1/8" that was a scrap flatbed from a truck my roommate bought. I don't know if it was already bowed, if we did it torching the top off, or if I did it stitch welding the sheets together. At one point I tried pulling it together with bolts , that didn't work

You can see the bowing here with a chunk of rect tubing, and it shows badly on the failed bolt holes





Worked fine for drunken college welding and most of the time it was more of an assembly bench than a precision welding table. I have looked for a new top but always cheaped out on buying a plate. Then I saw AMCGuys slat welding table and realized it was the ticket. I can get bar and tube stock for decent prices through some connections so it was cheaper, easier to move the material into the basement and around and no issues with clamping with normal C and F clamps

Now that I am moving toward machining and tig welding the not flat surface was really creating a headache.

Ordered stick of 2x4x1/8 square tube and a stick of 6x1/2 HR. The first step was cutting everything to length. I like the size it is now, works well in the space. I have to check the exact dimensions but I think it was 34" each, 7 slats. after measuring my clamps and keeping in mind I use a decent amount of 1-1/2 tube I settled on 1" spacing between sections. Everything was cut on my Northern 4x6 bandsaw. The plate is slow but it was easy to setup and run while I worked on other stuff



Next was disassembly. Vise was unbolted first



Then the top was cutoff. When I attached it I only used 8 ~2" long stich welds along the sides. A cutoff wheel in an angle grinder easily handled those.





Then I marked up the hole locations by hand. At first I was going to drill pilots with an extra long drill bit on the mill. I only have 3.5" of quill travel and cranking the column up and down was too slow. I got about half the pilots done and set the drill press up before I had to call it quits for the night.



Next Steps -
Finish drilling pilots
Expand top holes to 1/2
Holesaw bottom holes
Cap ends of tube

Bolts are ordered. Like AMCGuy I am using 1/2-20. I have plenty of 1/12-13 bolts but getting it level would be a pain with bigger movements. I will also know that 1 turn equals 1/20" or 0.05" vs a number useless for calculations

Still need to decide how to handle the feet. Right now its on casters which do get used. I want to be able to lock it down in one place and get it level.
 
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kf4zht

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Joined
Mar 20, 2008
Messages
712
Location
Calhoun, GA
Sorry for completely dropping the thread. Work got busy and the wife is pregnant - when she is sleeping loud noises are not tolerated.

The holes took forever to drill. In hindsight I should have grabbed an annular cutter and skipped the holesaw.

Started by drilling a pass through hole at each mark. Started on the mill but the quill travel wasn't enough to not have to raise and lower the head on every hole. Quickly switched to the drill press



Next I drilled one side to 1/2 and the other to a 1-1/4 holesaw. This was big enough to fit any 3/4" socket I had



one down



This took several nights of 5-6 holes before the saw was too hot and I was out of time. Finally got it all drilled and ready on both pieces
 
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kf4zht

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Joined
Mar 20, 2008
Messages
712
Location
Calhoun, GA
Next I capped the ends. I have some 4" flat stock so it was easy. To avoid having to grind as much I tried my hand at fillerless welding. Turned out pretty decent for a noob





Here is the welder that I did it all with - Miller 330 a/bp. Big heavy son-of-a. Draws 120amps at 240v if I gave it enough. Torch is an air cooled 17 prostar. I have a water cooled but it's old school and heavy duty. The handle is at least 1.5" in diameter and it gets old quick.



Here are the sides welded on. Got one side level with the cart, the put the other side, chunk of tube on the top and an electric level to sort it out





Finally the top goes on. The first was the hardest, after that a couple 1" spacers and a flat edge made it quick. Tacked all the bolts from below, then pulled and finish welded.



Welds on the bolts look like ****, guessing I didnt remove enough of the zinc plating. They will hold but I ain't proud of them.



Leveled it up with a straight edge for each piece



So I have a welding table again. A couple things left that can be done later
- Adjustable leveling feet
- May paint all but the top
- Find/make set of adjustment wrenches and make a holder

Next upgrade will probably be a welding lead boom, right now the floor is covered in leads every time I break the torch out.
 
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tarbellb

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Joined
Apr 17, 2011
Messages
5,779
Location
Oregon
Heck yeah, nice upgrade. I think you are going to like the slate top. I love mine.

I bought a couple sheets of MDF to throw on top when I need a solid surface.
 

Boost Creep

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Joined
Feb 17, 2010
Messages
1,407
Location
michigan
nice retrofit. i've really liking these slat design tables. still deciding on what type of top i want to do when i get around to building my table.
 

McLean

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Joined
Jul 24, 2013
Messages
218
Location
Seattle, WA
Awesome fab work and welding. A table like this is definitely on my to-do list. Thanks for sharing!
 
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kf4zht

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Joined
Mar 20, 2008
Messages
712
Location
Calhoun, GA
I did the slat top after shopping for a decent chunk of steel for a couple years. I have a connection for some decent pricing on tube and bar stock and was able to get the top for under $100, even have about 1.5ft left. Bolts were all from bolt depot, I wish they had plain or black oxide finish fine thread looking back.

Forgot till I looked at the pictures that I need to make a stand for the vise. I've got a flywheel off my F-250 and some 4" pipe that should make a decent stand.
 

ndnchf

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Joined
Jan 9, 2012
Messages
1,556
Location
Fredericksburg, Virginia


What kind of lights do you have on your mill? It looks like a ring of LEDs, is that something you added? It seems to work well. I have a similar mill and could use lights like that.
 
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