Which welder
in [Car Maintenance]
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From: Duncan Wood on 24 Jul 2010 21:42 On Sat, 24 Jul 2010 22:08:11 +0100, Cicero <sheldrake(a)hellfire.co.uk> wrote: > On Sat, 24 Jul 2010 16:49:39 +0000, Adrian wrote: > >> "Sla#s" <phil(a)knot-slatts.net> gurgled happily, sounding much like they >> were saying: >> >>> However the main problem could be your home insurance - welding >>> cylinders within a certain distance will invalidate it! >> >> Presumably MIG cylinders are perfectly acceptable? > > ============================================================================== > > I was never really aware of this danger, probably because home welding > (gas) was rare in the 1970s. I did most of my welding outside or in a > rented workshop. Storing and using CO2 is a different matter especially > as CO2 is far less hazardous and is actually used in fire extinguishers. > > Cic. > > > Well it depends on your insurance company. Mine doesn't mention it, I'veno idea how many do..
From: Rob on 25 Jul 2010 04:00 On 25/07/2010 6:37 AM, Harry Bloomfield wrote: > Cicero formulated the question : >> On Sat, 24 Jul 2010 20:51:00 +0100, Harry Bloomfield wrote: >> >>> Jim K brought next idea : >>>> On 24 July, 19:57, Harry Bloomfield <harry.m1...(a)NOSPAM.tiscali.co.uk> >>>> wrote: >>>>> on 23/07/2010, Fredxx supposed : >>>>> >>>>> >>>>> >>>>>> "Dave Plowman (News)" <d...(a)davenoise.co.uk> wrote in message >>>>>> news:513b3f1ab8dave(a)davenoise.co.uk... >>>>>>> In article <i2bjsq$p9...(a)news.eternal-september.org>, >>>>>>> Fredxx <fre...(a)spam.com> wrote: >>>>>>>> "Andy Dingley" <ding...(a)codesmiths.com> wrote in message >>>>>>>> news:de442991- >>>>>>>> ca06-4e13-8e58-5fbd1a7367fa(a)d37g2000yqm.googlegroups.com... >>>>>>>>> On 22 July, 20:43, "steve robinson" >>>>>>>>> <st...(a)colevalleyinteriors.co.uk> wrote: >>>>>>>>>> Its not that easy to use on car bodywork though as it tends to >>>>>>>>>> cut through . >>>>> >>>>>>>>> Are you using the right welder polarity? >>>>>>>> I've read an number of articles which suggest it doesn't make much >>>>>>>> difference and that its more the current/voltage characteristics >>>>>>>> which are more important. >>>>> >>>>>>>> My MIG is wired for gas, and my understanding the ideal polarity is >>>>>>>> the reverse for gasless wire, yet I can make satisfactory welds. >>>>>>>> If you have an alternative experience I would like to hear them. >>>>>>> That's interesting - I have a SIP Migmate for gas only, and would >>>>>>> like the option of gasless. Do you need any other parts other than >>>>>>> the wire? >>>>>> I could only get gasless wire at 0.8mm, whereas with gas I only ever >>>>>> used 0.6mm. I felt the feed rate ended up being nearly the same. >>>>>> There is a lot more spatter than using gas. I have bought gasless >>>>>> wire of eBay and found it ok. I think machine >>>>>> mart do smaller reels which perhaps you can try out. If I was using >>>>>> reels of wire I would go for gas in hired bottles, but as I use a >>>>>> reel every year or 2, gasless is the cheaper option. >>>>> >>>>> That is interesting, I have a mig which is designed for gas and the >>>>> reason I don't make much use of it is the gas. Gasless would be handy >>>>> if it would be able to use it - how do the gasless ones make contact >>>>> with the wire though the coating? >>>>> >>>>> >>>> what coating? :>) >>>> >>>> Jim K >>> >>> I assumed the gas was produced from some sort of coating on the wire, >>> which I further assumed would not be conductive. Have I misunderstood >>> how it works, I have never seen any? >> >> ============================================================================== >> >> >> It's flux *cored* like electrical solder. >> >> Cic. > > Thanks. Next time I see some, I buy it and see how it goes. > > I had thought of the 'flux core', but discounted it as impossible to > produce with steel. > You still have to have a MIG that will run the gasless wire. The results are not so good but still work. Some welders have the option gas/gasless. another point is the duty cycle and amps output. small welders (110amp) don't do a good job through rust, even a little bit, things have to be clean shiny metal for best results. I use an argon mix suitable for light metal.
From: Harry Bloomfield on 25 Jul 2010 04:11 Rob laid this down on his screen : > You still have to have a MIG that will run the gasless wire. The results are > not so good but still work. Some welders have the option gas/gasless. It was bought as a gas Mig welder, to do one single job I needed done at the time. I then used it few more times on other jobs, before loosing patience with the silly little expensive gas canisters. Apart from the gas problems it worked quite well, but because of the gas got shoved in a corner and forgotten. So would I likely be able to buy a reel of gasless wire and use that? -- Regards, Harry (M1BYT) (L) http://www.ukradioamateur.co.uk
From: Jim K on 25 Jul 2010 04:13 On 25 July, 09:00, Rob <mesam...(a)gmail.com> wrote: > On 25/07/2010 6:37 AM, Harry Bloomfield wrote: > > > > > Cicero formulated the question : > >> On Sat, 24 Jul 2010 20:51:00 +0100, Harry Bloomfield wrote: > > >>> Jim K brought next idea : > >>>> On 24 July, 19:57, Harry Bloomfield <harry.m1...(a)NOSPAM.tiscali.co.uk> > >>>> wrote: > >>>>> on 23/07/2010, Fredxx supposed : > > >>>>>> "Dave Plowman (News)" <d...(a)davenoise.co.uk> wrote in message > >>>>>>news:513b3f1ab8dave(a)davenoise.co.uk... > >>>>>>> In article <i2bjsq$p9...(a)news.eternal-september.org>, > >>>>>>> Fredxx <fre...(a)spam.com> wrote: > >>>>>>>> "Andy Dingley" <ding...(a)codesmiths.com> wrote in message > >>>>>>>> news:de442991- > >>>>>>>> ca06-4e13-8e58-5fbd1a736...(a)d37g2000yqm.googlegroups.com... > >>>>>>>>> On 22 July, 20:43, "steve robinson" > >>>>>>>>> <st...(a)colevalleyinteriors.co.uk> wrote: > >>>>>>>>>> Its not that easy to use on car bodywork though as it tends to > >>>>>>>>>> cut through . > > >>>>>>>>> Are you using the right welder polarity? > >>>>>>>> I've read an number of articles which suggest it doesn't make much > >>>>>>>> difference and that its more the current/voltage characteristics > >>>>>>>> which are more important. > > >>>>>>>> My MIG is wired for gas, and my understanding the ideal polarity is > >>>>>>>> the reverse for gasless wire, yet I can make satisfactory welds. > >>>>>>>> If you have an alternative experience I would like to hear them. > >>>>>>> That's interesting - I have a SIP Migmate for gas only, and would > >>>>>>> like the option of gasless. Do you need any other parts other than > >>>>>>> the wire? > >>>>>> I could only get gasless wire at 0.8mm, whereas with gas I only ever > >>>>>> used 0.6mm. I felt the feed rate ended up being nearly the same. > >>>>>> There is a lot more spatter than using gas. I have bought gasless > >>>>>> wire of eBay and found it ok. I think machine > >>>>>> mart do smaller reels which perhaps you can try out. If I was using > >>>>>> reels of wire I would go for gas in hired bottles, but as I use a > >>>>>> reel every year or 2, gasless is the cheaper option. > > >>>>> That is interesting, I have a mig which is designed for gas and the > >>>>> reason I don't make much use of it is the gas. Gasless would be handy > >>>>> if it would be able to use it - how do the gasless ones make contact > >>>>> with the wire though the coating? > > >>>> what coating? :>) > > >>>> Jim K > > >>> I assumed the gas was produced from some sort of coating on the wire, > >>> which I further assumed would not be conductive. Have I misunderstood > >>> how it works, I have never seen any? > > >> ============================================================================== > > >> It's flux *cored* like electrical solder. > > >> Cic. > > > Thanks. Next time I see some, I buy it and see how it goes. > > > I had thought of the 'flux core', but discounted it as impossible to > > produce with steel. > > You still have to have a MIG that will run the gasless wire. <snip> AIUI as long as you can change the polarity of the torch/earth any MIG welder can run gasless (flux cored) wire? Cheers Jim K
From: Harry Bloomfield on 25 Jul 2010 04:33
Fredxx formulated on Friday : > I could only get gasless wire at 0.8mm, whereas with gas I only ever used > 0.6mm. I felt the feed rate ended up being nearly the same. There is a lot > more spatter than using gas. I suppose that is just a matter of swapping the tip over to 0.8mm? > > I have bought gasless wire of eBay and found it ok. I think machine mart do > smaller reels which perhaps you can try out. -- Regards, Harry (M1BYT) (L) http://www.ukradioamateur.co.uk |