Author: 00c12f

Hello welding professionals, the following task is short for me: At a car. new sheet metal parts are to be welded. Partially bluntly welded, but also overlappingly welded points. I want to do both by means of TIG; MMA is also available. Since in particular overlapping spot-welded sheets in the overlap area can hardly be provided with corrosive protection, I wanted to treat these overlap areas beforehand with so-called welding primers. Does this work as I thought, or how do you solve the problem better? However, I don’t have a MIG/MAG welding machine. In the case of TIG welding, the sheet metal parts to be welded must be meticulously clean. How does welding primers or any other corrosion protection work? Is there something suitable? Look forward to numerous contributions to your experience on this topic. Best regards – Reinhard

Evening, I recently made the following unpleasant observation under the car on the outside (see pictures). Car is an A3 8P. Is exactly the place where I always put the jack on. I suppose that’s the underbody protection that dissolves there? And that under there rust? What kind of strut is that part of the frame at all? Does that have to be removed in the workshop first or could an absolute layman get there? Thanks for tips in advance.

Hello! A vehicle has fallen by the HU due to damage in the wheelhouse at the rear right. At the place is usually a metal sheet attached to the body, on which the pipe from the tank filler nozzle to the tank is additionally attached. When I had changed the shock absorbers 1.5 years ago, around the place was much wet dirt. Unfortunately there is no plastic covering there. I removed the dirt then, so that by the accumulated moisture and the It was too late and the rust was already there. Actually I wanted to take care of the place, but then completely forgot it. Now I was at the HU and was very surprised when the examiner suddenly stabbed around with a screwdriver in the back of the wheelhouse. The examiner dropped the vehicle (aside from a slightly adjusted headlight) because of it. I can only understand this very conditionally. The metal part in itself ha from my point of view, no relevance to the statics of the self-supporting body. The tank tube is sufficiently fastened above and below, so that there is no problem here either. Only the hole – thanks to the examiner – now created could be relevant. If I had thought of the place before, I would have done something in front of the HU that you do not see it. Probably not every examiner would have looked there either. That is at least my experience. Now he has unfortunately seen it. So it is repaired. Then: Weld metal sheet over it? Welding points or along the complete edges? Are there special requirements? Must there be welding points on all 4 sides or would it be enough on 2 sides? Full surface glued with body glue is not allowed, is it? It also has to be in some way tight so that no water comes into the small hole. The tank tube nearby can stay on to weld, right? Inn I’m thinking about whether I should give it to a body builder (what could cost such a thing?) or whether I try it myself. I don’t have much experience with bodywork. I’ve never welded anything like this before. I’d then go to a rental workshop where there should be a corresponding welding machine. With photos. Thank you very much for your advice.

Hello. I’m not sure if I’m right in the section of the forum, if not postpone it. I want to refurbish my Audi 80 B4 Avant. Now it’s about the underbody. At one point there’s good rust. So far I’ve done: extensively scraped everything with screwdriver, brush and fertan pinned on it (for first protection) currently it looks like on the picture. But I’m not really satisfied with it. How do I best do that? Please leads etc ignorant On tools I have: Handbrushes Brush for cordless screwdrivers Scharber For flex disks (unfortunately because of sparks in the tank) Sandblast gun Admittedly, I have never rusted a bottom. My procedure would have been now: Remove rust as far as possible, Fertan on it, underbody protection. By the way, when “pulling” with the screwdriver I didn’t get through anywhere Or are there other / better ways? Thank you already