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From: crn on 12 Jun 2010 09:23 In uk.rec.motorcycles Grimly Curmudgeon <grimly4REMOVE(a)removegmail.com> wrote: > <beavis.original(a)ntlwoxorld.com> saying something like: > > >With MIG brazing now being the most common method. It's also used on day to > >day repairs on cars such as new Fords, and VW's. Nothing else is allowed, as > >normal welding (gas, arc, MIG or TIG) causes changes in the high boron > >content steel used in these cars now, so although any good weld will *look* > >good and actually *be* good, the problem is just "north and south" of the > >weld which has now been seriously weakened by the welding process. Mig > >brazing is the only way to retain the same levels of safety (think of the > >children) that were present at manufacture and produce a good joint. > > Now that's interesting. Thanks for that info. Which explains the weld repaired items (often exhausts) which always seem to crack again close to the weld. Stainless mig welds seem especially prone to this. -- 03 GS500K2 76 Honda 400/4 project 78 Honda 400/4 in black 06 Sukida SK50QT (Slanty eyed shopping trolley)
From: crn on 12 Jun 2010 09:31 In uk.rec.motorcycles The Older Gentleman <totallydeadmailbox(a)yahoo.co.uk> wrote: > > Wasn't the original E-Type one of the last so-called mass-produced cars > that actually had molten lead used to seal seams and joints? ISTR you may be correct. Even today top notch car restorers use lead rather that Isopon/Bondo for filling dents. Plumbers lead is much easier to shape properly once you have the knack but is frowned upon by elfin safe tea because of the poisonous fumes. -- 03 GS500K2 76 Honda 400/4 project 78 Honda 400/4 in black 06 Sukida SK50QT (Slanty eyed shopping trolley)
From: Beav on 12 Jun 2010 15:50 "Grimly Curmudgeon" <grimly4REMOVE(a)REMOVEgmail.com> wrote in message news:4vp6161jn957vliverd36akq2qtrsdog0e(a)4ax.com... > We were somewhere around Barstow, on the edge of the desert, when the > drugs began to take hold. I remember "Beav" > <beavis.original(a)ntlwoxorld.com> saying something like: > >>With MIG brazing now being the most common method. It's also used on day >>to >>day repairs on cars such as new Fords, and VW's. Nothing else is allowed, >>as >>normal welding (gas, arc, MIG or TIG) causes changes in the high boron >>content steel used in these cars now, so although any good weld will >>*look* >>good and actually *be* good, the problem is just "north and south" of the >>weld which has now been seriously weakened by the welding process. Mig >>brazing is the only way to retain the same levels of safety (think of the >>children) that were present at manufacture and produce a good joint. > > Now that's interesting. Thanks for that info. You're welcome. -- Beav
From: Beav on 12 Jun 2010 16:00 <crn(a)NOSPAM.netunix.com> wrote in message news:hv01pd$gr$1(a)news.albasani.net... > In uk.rec.motorcycles Grimly Curmudgeon <grimly4REMOVE(a)removegmail.com> > wrote: >> <beavis.original(a)ntlwoxorld.com> saying something like: >> >> >With MIG brazing now being the most common method. It's also used on day >> >to >> >day repairs on cars such as new Fords, and VW's. Nothing else is >> >allowed, as >> >normal welding (gas, arc, MIG or TIG) causes changes in the high boron >> >content steel used in these cars now, so although any good weld will >> >*look* >> >good and actually *be* good, the problem is just "north and south" of >> >the >> >weld which has now been seriously weakened by the welding process. Mig >> >brazing is the only way to retain the same levels of safety (think of >> >the >> >children) that were present at manufacture and produce a good joint. >> >> Now that's interesting. Thanks for that info. > > Which explains the weld repaired items (often exhausts) which always > seem to crack again close to the weld. Stainless mig welds seem > especially prone to this. Well welding always produces stress risers close to the job, but with the high boron content of newer cars, the problem is aggravated because the steel was less flexible from the outset. Fortunately, Mig brazing is easier than Mig or Tig welding as there's VERY little chance of blowing holes so I see it becoming used more and more. -- Beav
From: sweller on 13 Jun 2010 08:04
Beav wrote: > I was under the impression it was for the usual bullshit H&S, but > seemingly, I'm wrong. (Not an unheard of experience, I have to say). <snip> > It appears to be just another bullshit restriction and a way to create > a job for some government "inspector" and to stop the likes of you and > me getting repairs done at reasonable prices. It also removes choice > from us. IME of working in a highly regulated and safety critical industry very little of the regulations/restrictions are "bullshit". A lot of things that get branded "elf n safety" in a derisory manner are less about actual H&S but more about a fear of litigation. Unfortunately I fear this Daily Mailesque attitude is going to be exploited by the current Gov't to dilute, expensive, regulations designed to protect vulnerable workers. -- Simon |