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Heavy Duty Welding and Cutting Table Design

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  • kraythe
    started a topic Heavy Duty Welding and Cutting Table Design

    Heavy Duty Welding and Cutting Table Design

    Greetings,

    I have been thinking of doing a heavy duty welding table that has more capabilities than my little metal table in the garage. My requirements were the following:

    * The table must be able to hold at least 2000# in addition to its weight. I work on engines sometime and if this was a general purpose table as well, it would be nice.
    * The table must have surfaces for cutting with my torch and plasma.
    * The table must have a funnel to catch sparks from cutting and channel them into a removable cleaning pit.
    * The table must have the ability to add clamps and other jigs easily.
    * The table must be able to take the heat of torch, tig and SMAW without significant warping.

    Below is a picture of some initial design ideas I whipped up in my CAD program. I created the table with 1/3 as a cutting surface and 2/3 as a welding and clamping surface.

    The cutting area is a grid of 1/4 inch by 3 inch steel bars set on the side in slots cut in the side rails. The idea is when a slat gets damaged by cutting it can be replaced. What isnt shown in the drawing is the funnel underneath. It will be a 4 sided funnel made of 12ga sheet and leading down to a collection pot.

    The welding area is composed of three 12 inch wide, 1/4 inch thick steel plate. Each plate is placed 2 inches from the previous to allow the insertion of bar clamps and so on. In addition, the plates are drilled through with 1/2 inch diameter holes every 3 inches so that stainless steel bolts can go through the surface to rig up clamps. I have thought of welding the surfaces to the frame but I think it would be better to fix them with stainless steel bolts so they can be replaced when needed.

    The top frame is .321 wall 4" by 1.721" C channel. I opted for C channel because it is provides a clamping surface as well as being less prone to corrosion than enclosed rectangular tube since air and moisture cant get trapped inside like a tube.

    The legs are currently designed as 4" x 5" x 1/4" rectangular tube though I might try to go C Channel here as well. I will have to brace them a bit more against racking other than the welds holding them. I havent put those braces in the drawing yet. The legs sit on heavy duty double locking casters from northern tool.

    The whole thing weighs, by my calculation of volume vs .35# per cubic inch of steel, 471# as currently designed which is making me wonder if I am getting too extreme in the engineering here. Perhaps I can use C channel with a shorter web (3" maybe) or thinner walls. The top surfaces do need ot be 1/4 at least for heat warping reasons since I use a torch a lot. However I am thinking the legs are perhaps too big and I could get by with C channel and a plate welded to the end of the channel to bolt the casters to.

    Comments?

    Attached Files

  • kraythe
    replied
    Originally posted by Pass-N-Gas View Post
    Glad to hear my 1" deck with 3x3x1/2 legs won't give out on me..... and yes I park more than a car on mine at times
    then you better build it wider. With all those cars parked on it you will need more space.

    Seriously, what was the point of that post?

    Leave a comment:


  • Pass-N-Gas
    replied
    Originally posted by kraythe View Post
    My welding instructor told me if I built it with 1/2 I could probably park a car on it. Although overkill is nice, I dont plan to park a car on my table.
    Glad to hear my 1" deck with 3x3x1/2 legs won't give out on me..... and yes I park more than a car on mine at times
    Last edited by Pass-N-Gas; 02-08-2010, 08:18 PM.

    Leave a comment:


  • kraythe
    replied
    Originally posted by Daniel View Post
    Kraythe man just put him on you're ignore list. Anybody that you feel is a jerk to you. Than you wont get in there and feel you have to tell then off.

    Now back on the subject. There should be no problem welding even the heavy stuff with many passes of your oxy/ ace torch, I would use the R65 welding rod " 65 000 # tensile strengh compare to R45 " 45 000 # tensile strenght. I might get killed for even mentionning that.

    But hey it's all for the fun of experimenting right
    Absolutely. Thanks.

    I am thinking I might be able to downsize to 1/4 inch wall on the top frame. 1/2 might be serious overkill for no good reason. My welding instructor told me if I built it with 1/2 I could probably park a car on it. Although overkill is nice, I dont plan to park a car on my table. The feet will still have to be thick plate though just to make sure.

    I have never used other than r45 but I will try out the r65. Does it handle differently?

    Now if I could just figure out how to fillet weld with a torch, I would be happy.

    Leave a comment:


  • Daniel
    replied
    Originally posted by kraythe View Post
    I will personally commit to not engaging in any replies or that activity myself in the future. I am just as much at fault as others.
    Kraythe man just put him on you're ignore list. Anybody that you feel is a jerk to you. Than you wont get in there and feel you have to tell then off.

    Now back on the subject. There should be no problem welding even the heavy stuff with many passes of your oxy/ ace torch, I would use the R65 welding rod " 65 000 # tensile strengh compare to R45 " 45 000 # tensile strenght. I might get killed for even mentionning that.

    But hey it's all for the fun of experimenting right

    Leave a comment:


  • kraythe
    replied
    Originally posted by breauxtus View Post
    Kraythe,

    Here is an excellent steel scrap yard. They get drops from some of the large steel supply yards in the area. Most steel scrap goes for $.50 per pound. Great stuff. I get the majority of my stuff from their place. They have everythign from monster I-beams, to plate, to stainess, to aluminum, to you never know.

    http://www.kksurplus.com/

    Good luck. Build the table, then post pics.

    Mike
    Awesome man. Thanks

    Leave a comment:


  • breauxtus
    replied
    Kraythe,

    Here is an excellent steel scrap yard. They get drops from some of the large steel supply yards in the area. Most steel scrap goes for $.50 per pound. Great stuff. I get the majority of my stuff from their place. They have everythign from monster I-beams, to plate, to stainess, to aluminum, to you never know.

    http://www.kksurplus.com/

    Good luck. Build the table, then post pics.

    Mike

    Leave a comment:


  • kraythe
    replied
    Originally posted by ASKANDY View Post
    Had to stir the pot again didn't you.
    Until this post.....everything was fine and informative. Good pics and information.
    So what if he wants to stick weld it or oxy fuel weld it. It wouldn't be my first choice but that doesn't mean all you guys have to blast him. This is a whole different project than the trailer or do some of you just have a woodie for picking at this guy?
    I see all the pi55ing back and forth and everyone has to make a point. Not that I agree with everything that kraythe says or wants to do but it sure looks to me like some people here just lurk around and wait for the chance to start something.
    SDIII's post was the beginning of the end for this tread.

    A-
    I will personally commit to not engaging in any replies or that activity myself in the future. I am just as much at fault as others.

    Leave a comment:


  • Jim-TX
    replied
    Originally posted by kraythe View Post
    I dont know where you are located at but I have been having trouble finding much other than automotive salvage yards in the area. But then denver isnt a huge steel or metal work capital. There are 4 or 5 metal suppliers in the area that have decent prices. If I cant fidn salvage, I will go with one of them. Out of curiosity, where would you look for such a salvage yard. Hours of calling numbers in the phone book has yielded little. Lots of auto salvage areas but hardly anything else.
    Hours? I just Googled "Denver steel scrap" and got this. Here ya go http://www.superpages.com/yellowpage...S-CO/T-Denver/ Hope this helps.

    Leave a comment:


  • Bert
    replied
    Originally posted by Sonora Iron View Post
    Want to tell them that? Within arms reach?
    Nah, I"m sure they'd kick my @ss! But hmm....men with mini-speedos....hugging and carressing...
    Not my cup of tea

    Leave a comment:


  • ASKANDY
    replied
    Originally posted by SundownIII View Post
    Drilling all those holes is about as much fun as doubling the load carrying capacity of a 33' travel trailer.

    At least this "Heavy Duty Welding Table" won't kill someone when it fails due to lack of welding skill/knowledge of fabrication.
    Had to stir the pot again didn't you.
    Until this post.....everything was fine and informative. Good pics and information.
    So what if he wants to stick weld it or oxy fuel weld it. It wouldn't be my first choice but that doesn't mean all you guys have to blast him. This is a whole different project than the trailer or do some of you just have a woodie for picking at this guy?
    I see all the pi55ing back and forth and everyone has to make a point. Not that I agree with everything that kraythe says or wants to do but it sure looks to me like some people here just lurk around and wait for the chance to start something.
    SDIII's post was the beginning of the end for this tread.

    A-

    Leave a comment:


  • Sonora Iron
    replied
    Originally posted by Bert View Post
    WOW! Little too g@y for you to be posting that pic
    Want to tell them that? Within arms reach?

    Leave a comment:


  • Bert
    replied
    Originally posted by Sonora Iron View Post
    Time for a



    WOW! Little too g@y for you to be posting that pic

    Leave a comment:


  • Sonora Iron
    replied
    Originally posted by bikemonster View Post
    Anyone else feel like they're watching the Teutuls (senior and junior) on American Chopper?
    Time for a



    Leave a comment:


  • bikemonster
    replied
    Anyone else feel like they're watching the Teutuls (senior and junior) on American Chopper?

    Leave a comment:

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