Announcement

Collapse
No announcement yet.

Cutting Welds

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Frank R
    started a topic Cutting Welds

    Cutting Welds

    Click image for larger version

Name:	IMG_2252.jpg
Views:	1
Size:	50.0 KB
ID:	532133

    I need to cut several stitch welds to remove some casters off the bottom of a cart. I used an angle grinder to cut some of them. I then switched to a mini die grinder to get in some tighter spots; that grinder was very weak. But I still need to remove some more.

    The picture shows the tight spot they are in. I cannot get a grinding disc in there and I cannot get a sawzall blade under the caster base.

    Can I bust them out with a cold chisel?

    I did some reading on arc gouging and plasma cutting but I don't want to buy that kind of equipment just yet.

    One post I researched mentioned using a stick welder turned up high and using a conventional rod to melt the weld, and letting gravity do the rest. I have a Thunderbolt AC/DC. Can I do this with the supply of rods I have on hand (I do not know what they are; they came with a welder)? Or do I have to buy some special kind of rod?

    Please provide instructions on how I should do this, or point me in the right direction.

  • Frank R
    replied
    Originally posted by Forger View Post
    BTW Frank I cant imagine there is not a welding shop in your area that would not be more than happy to replace those casters for you,but I could be wrong.Just make sure you are not using a left hand cutter on a right hand die grinder.Good Luck!
    And deny me the opportunity to fill my tanks and use a cutting torch for the first time in thirty two years?

    Its been fun learning all the different ways of doing things, and I get to buy new toys.

    Leave a comment:


  • Forger
    replied
    Hey Jim (sorry Frank)If you are from Hypertherm just wanted to let you know I bought one of your plazma machines awhile back (powermate 45)I could not be more pleased with it.I'm not a yardart guy but I do a fair number of signs 3" - 18" letters and this works great,Im pretty much old school and am probably one of the last hold outs,Yes you can cut 20ga with a torch ,but this sure beats it.BTW Frank I cant imagine there is not a welding shop in your area that would not be more than happy to replace those casters for you,but I could be wrong.Just make sure you are not using a left hand cutter on a right hand die grinder.Good Luck!

    Leave a comment:


  • kevhead63
    replied
    Originally posted by shovelon View Post
    As a matter of fact, I found his suggestion very informative. We should be appreciative of Jim's participation on this forum.
    I agree.

    Leave a comment:


  • shovelon
    replied
    Originally posted by big mike View Post
    I believe we all know Jim works for Hypertherm so I don't see where he is trying to "hide" anything.Jim gave an honest answer to your question and then you snip back like he is trying to sell you equipment......I don't read a sales pitch in his post.
    As a matter of fact, I found his suggestion very informative. We should be appreciative of Jim's participation on this forum.

    Leave a comment:


  • Frank R
    replied
    Originally posted by big mike View Post
    I believe we all know Jim works for Hypertherm so I don't see where he is trying to "hide" anything.Jim gave an honest answer to your question and then you snip back like he is trying to sell you equipment......I don't read a sales pitch in his post.
    Noty my intent. I saw that he had an avatar, actually a signature, that was not showing. His intent was full disclosure, it just was not happening. Trying to help there.

    I understood his post but he missed the point about my not wanting to go that route yet.

    Of course Jim is doing a good service by educating people about the use of plasma cutters. I just thought it was a little odd to be doing it on a competitor's forum.

    Leave a comment:


  • big mike
    replied
    Originally posted by Frank R View Post
    Pretty expensive equipment to cut a few welds, don't you think?

    Jim, your avatar is not showing up. I know you from postings on other forums. I think you need to have some more disclosure on who you represent. And really, posting on a Miller forum?
    I believe we all know Jim works for Hypertherm so I don't see where he is trying to "hide" anything.Jim gave an honest answer to your question and then you snip back like he is trying to sell you equipment......I don't read a sales pitch in his post.

    Leave a comment:


  • Bistineau
    replied
    Next time bolt the casters on and avoid this problem again in the future. I see these casters have the holes in them so they can be bolted, but some genius decided to weld them on, thus causing the problem you now have.

    Leave a comment:


  • Frank R
    replied
    Originally posted by walker View Post
    Use an abrasive wheel on a 4 1/2" angle grinder, cut straight down. It will cut the leg on the side as well, then just weld up the part that was cut on the side if you are trying to save it.
    I guess I could do this.

    Leave a comment:


  • walker
    replied
    Use an abrasive wheel on a 4 1/2" angle grinder, cut straight down. It will cut the leg on the side as well, then just weld up the part that was cut on the side if you are trying to save it. Once one side of the caster is cut you should be able to pry up on it and likely break the weld on the other side fairly easily. As an alternative you could use a grinding stone perpendicular to teh weld and gouge down on the caster. This will leave a bevel where the weld was, but will not cut through the side of whatever it is on. You can weld up the bevel when you weld it on the next project

    Leave a comment:


  • OldSparks
    replied
    Can't you just angle grind/zip disk through the stitch and base's lip and then weld the lip back up. Lot cleaner then trying to pick it out with a torch.

    Leave a comment:


  • Frank R
    replied
    Well, I found some burrs but they turned out to be made from high speed steel; did not work too well.

    Beat the daylights out of a weld with a cold chisel. Very, very slow progress.

    Today I called my LWS to see about filling my little tanks. I also ordered a scarfing tip. They had to special order it for the size 3 torch. They gave me a nice break on the retail price too. Plan to pick it up on Saturday.

    I will have to keep looking for the 1 inch wheels. The smallest that the LWS carried were 3 inch.

    Leave a comment:


  • Frank R
    replied
    Originally posted by Frank R View Post
    I don't want to buy that kind of equipment just yet.
    Pretty expensive equipment to cut a few welds, don't you think?

    Jim, your avatar is not showing up. I know you from postings on other forums. I think you need to have some more disclosure on who you represent. And really, posting on a Miller forum?
    Last edited by Frank R; 03-04-2013, 10:44 AM.

    Leave a comment:


  • jimcolt
    replied
    Plasma arc gouging works extrmely well for blowing out welds. It is easy to control the depth and width, very easy and fast. Many newer technology air plasma torchs have special gouging nozzle that create a softer arc....made specifically for gouging.
    Jim Colt





    Originally posted by Frank R View Post
    [ATTACH]31699[/ATTACH]

    I need to cut several stitch welds to remove some casters off the bottom of a cart. I used an angle grinder to cut some of them. I then switched to a mini die grinder to get in some tighter spots; that grinder was very weak. But I still need to remove some more.

    The picture shows the tight spot they are in. I cannot get a grinding disc in there and I cannot get a sawzall blade under the caster base.

    Can I bust them out with a cold chisel?

    I did some reading on arc gouging and plasma cutting but I don't want to buy that kind of equipment just yet.

    One post I researched mentioned using a stick welder turned up high and using a conventional rod to melt the weld, and letting gravity do the rest. I have a Thunderbolt AC/DC. Can I do this with the supply of rods I have on hand (I do not know what they are; they came with a welder)? Or do I have to buy some special kind of rod?

    Please provide instructions on how I should do this, or point me in the right direction.

    Leave a comment:


  • Bistineau
    replied
    [QUOTE=Frank R;303103]Thanks for the answers.

    I have one of those Port-A-Torch outfits but I have not had the tanks filled yet. .



    Originally posted by clint738 View Post
    If you have an oxy/acet torch setup I would just use a scarfing tip on the torch to remove it.
    It looks like you now have a good reason to get those tanks filled. This method will probably be the easiest way out of this situation^^^^. And you can pick up the scarfing tip while getting the tanks filled. What good is having the torch out fit and empty tanks anyway?

    Leave a comment:

Working...
X