bucket edge / carbon arc

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I do a few of these.  Its a 24" Bobcat excavator bucket.  They got me the cutting edge.I had my way with it using 3/16" carbons at 250 amps on a V350 set to gouge.  80 psi air.The holes are the end of the weld I was cutting out.Profile of bead I cut all of the old welds out so I don't have much grinding to do.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:Here is the back side.This is the edge I was following. I cut them in half with the gouge then "tap" them off with an 8 lb sledge hammer.I burned the bolt out of that nut.I heated it with a rosebud till it was smoking then back to the V350, pulsed spray, .035 wire about 350 ipm, 92/8.Last edited by David R; 05-07-2009 at 08:42 PM.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:Backside welded in position.The whole job took about 2 hours.Thanks for watching DavidLast edited by David R; 05-07-2009 at 08:53 PM.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:It seems like bobcat buckets are famous for doing this.  The last one I did about 2 years ago for my buddy.  Lucky him, he mangaged to find the tooth and the cutting edge piece, when it broke off.   V both sides out, cranked my miller 210 all the way up, burned it in hot.  Still in use daily, hasn't broken since.  Lincoln 300 Vantage 2008300 Commander 1999SA250 1999SA200 1968Miller Syncrowave 200XMT350MPA/S-52E/xr-15Xtreme 12vs Millermatic 251 w/30A  Millermatic 251 Dialarc 250 Hypertherm 1250 GEKA & Bantom Ironwokers
Reply:Nice job.I bet the carbon arc makes the job a lot quicker.Have done a couple of bucket repairs and they usually take me longer than 2 hours.Haven't done one in a while because no one wants to pay proper money as they think i can do it for nothing because i work out of my garage at home.
Reply:David - very nice and quick repair.  It appears that you have a great deal of control with the carbon arc.  How are you able to control depth of cut?  Is this done with the settings on the machine?  By that I mean is varying the amps do you get a greater or lesser depth of penetration thereby controlling the process?  Thanks for another great post.Charlie
Reply:I can give you a tip of advice about that bucket. Tell your customer to throw it away and get some aftermarket ones. I have had personal experience with the bobcat buckets and there junk. I was replacing teeth every 5 mins when i first got my machine. Called up the dealer told them to find me some better buckets and come get these. they did
Reply:Thats nice work. I couln't tell from the pics. Did you weld a brace from the top of the bucket to the bottom ? I've done a few buckets, they were alot wider though. I had a bowwed cutting edge when I was done. The customer will proabably never be back but maybe another will come along.
Reply:Hi David:Could you post a pic of the torch, like how does the air hook up? I found a pic on google with the rod clamped in a holder like stick welding, but I don't understand how the air is 'applied'. TIA, Craig 9-11-2001......We Will Never ForgetRetired desk jockey. Hobby weldor with a little training. Craftsman O/A---Flat, Vert, Ovhd, Horz. Miller Syncrowave 250
Reply:http://www.thermadyne.com/arcair_pdfs/89_250_008.pdfEd Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:here is a pic of my setup. There you can see where the 2 leads hook up. Attached Images
Reply:SsshhhMy customer IS Bobcat. Originally Posted by landmanI can give you a tip of advice about that bucket. Tell your customer to throw it away and get some aftermarket ones. I have had personal experience with the bobcat buckets and there junk. I was replacing teeth every 5 mins when i first got my machine. Called up the dealer told them to find me some better buckets and come get these. they did
Reply:I'm surprised the cutting edge snapped. Most of those machines don't have the balls to tear off a cutting edge, and the buckets are thin and cheap. Hmm... looking at the bucket and the fact it's not bent, I'm thinking they were using it as a hammer and pounding on concrete or a rock and hit that one tooth. That would probably do it.Nice repair.
Reply:Nac, My air and electric hook up are exactly like yours except I have a cheap little regulator I put in the line set at 80 Psi.  My rod holder or torch is burnt up pretty good.I guess for the technique, Doesn't that look like a stick bead?  Forehand at about a 45* angle pushing.  Keep the rod as deep as you want it.  That 3/16 rod needed my machine to be on 250 amps.  Any less and it would not be as smooth or controllable.  350 amps and it would keep blowing the end of the rod.  When everything is right, its loud, I wear ear plugs.  It keeps the sparks out of my ears too. In that bucket, the sparks blow right back at you.  I caught my pants on fire cutting it apart.Where is Jim Colt?  I could never cut that with a plasma.  And I have a gouging tip for my HT 600.Edit:  DSW, I think they use the tooth as a prybar.  I welded a piece of cutting edge back in on another skid steer on Wednesday.  I preheated it, double beveled it and welded it both sides with 3/32 7018 @ 85 amps.  It took about an hour.  This was a different customer. Thanks for all the compliments.David Last edited by David R; 05-08-2009 at 06:16 PM.Real world weldin.  When I grow up I want to be a tig weldor.
Reply:i don't run an air regulator on mine but i have enough CFM at full psi. is that a cuting edge for that bucket or is it a double sided (2) bevel standard cutting edge that you used?
Reply:Originally Posted by Naci don't run an air regulator on mine but i have enough CFM at full psi. is that a cuting edge for that bucket or is it a double sided (2) bevel standard cutting edge that you used?
Reply:Nac:Thanks for the pic.Ed:Thanks for the link. Up to 7" stickout, automated can be accurate to +/- .025, less heat input than an O/A cut and leaves a cut clean enough to weld or braze. David said "Doesn't that look like a stick bead?"I thought it was a stick bead, even though the captions said it was gouged.  I'm smarter now.  For something like David R's project, how much stickout?9-11-2001......We Will Never ForgetRetired desk jockey. Hobby weldor with a little training. Craftsman O/A---Flat, Vert, Ovhd, Horz. Miller Syncrowave 250
Reply:I put the electrode in the middle.  Its a 14" rod, so that would be 7.  When Its burnt up pretty good, I move it out to the end.  It doesn't seem to matter as long amps and air are what they should be.David Real world weldin.  When I grow up I want to be a tig weldor.
Reply:Interesting.    The best laid schemes ... Gang oft agley ...
Reply:Originally Posted by Broccoli1http://www.thermadyne.com/arcair_pdfs/89_250_008.pdf