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PostPosted: Sat Feb 07, 2015 11:03 am 
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848cc
848cc

Joined: Sun Jun 08, 2014 1:09 am
Posts: 7
i've done a welding course and have a pretty good MIG. I'm just not good enough to do the welding on thin metal, and want it done right.

I'm studying atm as well as fulltime work so unfortunately don't have time to do more courses


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PostPosted: Sat Feb 07, 2015 11:35 am 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39754
Location: near Baulkham Hills, NSW
Before I retired I was welding engineer at Rheem. I was responsible for welder training.... and TAFE ran us a specific course.
The trouble with many short MIG courses at TAFE etc is they don't teach how to weld really thin stuff, like body panels. Their idea of `thin' is 1.6mm. Fine to do a trailer with.
The welding content of a panelbeating course is far more applicable.

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PostPosted: Sat Feb 07, 2015 1:53 pm 
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998cc
998cc

Joined: Fri Aug 30, 2013 8:59 pm
Posts: 1045
Location: Western Sydney
I'm a boilermaker by trade and welded nothing under 3mm and only with a stick welder.
Bought a mig for my mini project and started blowing holes in 0.7mm sheet. Played with Amps and feed speed until it started to become controllable.
Still not brilliant but the grinder fixes that.

Buy a MIG and have a go, it's really satisfying.

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PostPosted: Sun Feb 08, 2015 8:41 pm 
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1275cc
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Joined: Sat Feb 09, 2013 5:44 pm
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Location: Camden
simon k,
I made the drip rails at TAFE. (You can see why they are closing these luxuries down!!) using a guilotine, brake and a swagging jenny to put a slight rib to fit against the gutter, and a shrinker to curve the front few inches.
New ones weren't available a few years ago.
I think I have read, in the past year or so, that they are being remade.


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PostPosted: Mon Feb 09, 2015 7:15 am 
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1098cc
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Joined: Sat Jul 23, 2011 8:17 am
Posts: 1964
Location: san remo nsw
They're still available new, about $20 a side.+ post (they might need to cut in half to post.)
$350 for a new spot welder (fleebay)


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PostPosted: Mon Feb 09, 2015 8:19 am 
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Joined: Wed Sep 08, 2004 9:27 pm
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Location: Wodonga - Vic/NSW border
ahh, so they are.... the ends look weird though

Image

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PostPosted: Mon Feb 09, 2015 10:23 am 
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1360cc
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Joined: Wed Oct 03, 2007 9:04 pm
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Location: Melbourne, VIC
peterb wrote:
They're still available new, about $20 a side.+ post (they might need to cut in half to post.)
$350 for a new spot welder (fleebay)

Those are the UK ones. Australian drip rails have a different profile and also a slight curve at the end. I'm pretty sure no-one makes them in quantity lots for retail sale, although I know some members have made a set for themselves using the method Bill B describes.

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PostPosted: Mon Feb 09, 2015 1:10 pm 
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998cc
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Joined: Mon Apr 05, 2004 11:23 am
Posts: 581
Location: Eastern Melbourne
Mig with 0.6 wire and keep the amps down. I use the mig wire to set my panel gap as the minimum (I cant cut that accurately normally). Magnets to set them flat and spot together every 3 inches working at diagonals across the panel like you're torquing up a head. As said a grinder with a flap disc will clean it up nicely.


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PostPosted: Mon Feb 09, 2015 5:35 pm 
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848cc
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Joined: Fri Jan 21, 2005 10:59 am
Posts: 141
Location: Brisbane
The OP was asking about adhesives.

The Lotus Elise chassis is not welded or bolted together, it's glued! It's supposed to be stronger than weld.


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PostPosted: Mon Feb 09, 2015 5:50 pm 
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SooperDooperMiniCooper ExpertEngineering
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Joined: Fri Apr 29, 2005 9:46 am
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Location: Under the bonnet son!
GtiMini wrote:
The OP was asking about adhesives.

The Lotus Elise chassis is not welded or bolted together, it's glued! It's supposed to be stronger than weld.


So are the majority of commercial aircraft these days as well, at least in a lot of the skin construction. The modern adhesives are amazing.

Gotta have the car certified by an engineer however with a significant change of construction which might be tricky as the engineer won't have the details on the structural results of using adhesives. For every well thought out, well resourced and clever home engineer out there, there will be five shaky car repairers who would stoop to gluing AU Falcon crumple zone panels on with gutter silicone.

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