swood1 Posted August 19, 2015 Report Share Posted August 19, 2015 Hi all, Has anyone had any experience of welding on the lower wing repair panels available from Moss? I assume it has a joggle/recess in it to allow for an overlap of the panels or does it assume butt weld. Regards Steven Quote Link to post Share on other sites
AlanT Posted August 19, 2015 Report Share Posted August 19, 2015 Normally such panels have extra width and you use as much of it as you need. No matter what I would not rely on a butt weld in a area of high vibration like this. Too likely to crack later on. And panels like this like to go wavy if you do a lot of welding. And also much easier to have an overlap either joddled in or use a backing strip. Quote Link to post Share on other sites
RogerH Posted August 19, 2015 Report Share Posted August 19, 2015 Hi Steve, I made my own (before finding they are available in the shops) and used a joggle/joddle to attach. If using a spotwelder or doing plug welds try and zig zag them just a little to give a better support. Roger Quote Link to post Share on other sites
stuart Posted August 19, 2015 Report Share Posted August 19, 2015 They dont come with a joddle so you will have to fit one, best to do that to the wing and then if you weld carefully with attention to heat soak and take your time its unlikely to be a problem with distortion. As Alan has stated only use the minimum that you need but there is zero chance of that area cracking again as it is held in place well. Stuart. Quote Link to post Share on other sites
swood1 Posted August 19, 2015 Author Report Share Posted August 19, 2015 Hi all, Thanks for response. Okay so next thing on my list is a set of sheer metal jogglers. Are there any recommendations on what to look for? They have lots on Ebay. Regards Steve Quote Link to post Share on other sites
RogerH Posted August 19, 2015 Report Share Posted August 19, 2015 Hi Steve, something like these. They also punch a hole for the plug weld - open this to 1/4" http://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.Xsheet+metal+jogglers.TRS0&_nkw=sheet+metal+jogglers&_sacat=0 Roger Quote Link to post Share on other sites
John Bracher Posted August 19, 2015 Report Share Posted August 19, 2015 Hi Steve. If you can, get a look at the joddler/step tool before you buy it. Some 'cheap ones' crease/wrinkle the metal at the same time as producing the step (guess how I know)...... Buy good ones, set them very light, and do the step in several 'progressive' passes. Also, if you are concerned over the heat causing issues, get something like this :- http://www.frost.co.uk/auto-bodywork-welding-metalworking-machine/automotive-welding-tools/welding-tool-accessories-welder/cold-front-414ml.html I had some I pinched borrowed from a welding contractor (in a former life, so guilt free) It was really good, and despite doing 1" long butt welds, the floorpan I was fixing showed no distortion, and the paint 'beyond' the putty was unnaffected! It is a bit mucky to clean up before paint, but worth it! Good luck! Quote Link to post Share on other sites
AlanT Posted August 19, 2015 Report Share Posted August 19, 2015 (edited) Here I am doing something similar on a bootlid. You can see the "zig-zag" Roger mentions above. Previously I have joddled the boot-lid and fitted Roger's repair panel flat. On this lid I left the boot-lid flat and joddled Roger's panel. I got less distortion on this one than usual. This may be because of the joddling but there could be other factors. Edited August 19, 2015 by AlanT Quote Link to post Share on other sites
swood1 Posted August 19, 2015 Author Report Share Posted August 19, 2015 Thanks for replies. I best get some of that heat stopper putty. So am I correct with my understanding that a joggler produces a step that allows for an over lap. The overlap obviously increases the strength of the panel once welded. But I assume when using a joggler you have two seams to weld (one inside, one outside). You mention welding in a zigzag pattern, could this be by welding one spot on the front one spot on the rear? I assume once the panels are held together weld lengths can be gradually increased till they are continuous to reduce any chance of water ingress. Have I got this all correct? Steve Quote Link to post Share on other sites
AlanT Posted August 19, 2015 Report Share Posted August 19, 2015 (edited) Here is a closer picture of a joddled joint from the outside [url=https:// and from the inside where I also fill the hole left by the M3 screw at the same time: [url=https:// Edited August 19, 2015 by AlanT Quote Link to post Share on other sites
RogerH Posted August 19, 2015 Report Share Posted August 19, 2015 Hi Alan, what welding machine do you use.? Roger Quote Link to post Share on other sites
AlanT Posted August 19, 2015 Report Share Posted August 19, 2015 (edited) SIP, over 35 year old: and a Sykes-Picavent joddler/punch Edited August 19, 2015 by AlanT Quote Link to post Share on other sites
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