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Go Back   PeachParts Mercedes-Benz Forum > Do It Yourself Links & Resources > Bodywork - Repair, Paint, Tools, Tips & Tricks

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  #16  
Old 07-18-2009, 08:22 AM
toomany MBZ's Avatar
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Agreed, very good work on that fender.

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  #17  
Old 07-19-2009, 10:39 PM
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Yeah, that looks pretty good. The worst part is the curved part (which is nearly impossible) and that's covered by the rubber molding anyway. The paint looks great.
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  #18  
Old 07-19-2009, 11:48 PM
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Bodhi,

Man, I feel your pain. Please read through my blog below. I haven't updated in quite awhile, but I went through the same thoughts/apprehension as you did above. Its quite a good read and was quite a journey for me in terms of learning some really good skills.

I did learn to weld from my friend and I eventually bought his welder. it was easy to pick up, just need to become familiar with the settings and what works on what gauge steel. Not to mention, always weld on clean, bare metal and watch out for those galvanized metal fumes!

I bought a Lincoln 135 MIG'r. I also did fiberglass patches here and there too. Welding takes practice. I had a lot of burn throughs. Setting is very important. On my Lincoln, I set the power to C and then the wire speed to 4. That was the ideal setting on the exterior body panels. On the floor board, I had to up it to D and 5, but I was very careful and spot welded from the outer pieces, did a spot in the middle, and then worked back and forth until he spot welds were 1 to 1.5 in apart. Then I filled in at C and 4 setting.

One thing I learned about rust is that its like roaches. There's more than you think and its just right around the corner. So my advice is to keep looking around the areas you found this bumper rust.

On the fiberglass job, good work but i got some questions. Did you grind off all the rust? If so, then i dont beleive it will bond well. I used both POR15 as well as Mercedesshop.com's POR-15 like product (I thikn they are one in the same). Both recommended to remove the flakes and surface rust, but leave some remaining for the stuff to bond to. It appears you used some grey product to cover the rust.

The other option you have is sheet metal and rivets. I didn't use a rivet gun as you will read on my car repair b/c there werent' any good places to use it. but if you do rivet, you should buy a flange air tool (I believe you have a compressor) to make flanged pieces. It's also good to put a bead of epoxy adhesive in between the flanged donor piece and the body panel you are riveting to.

Feel free to email me if you have questions, but do take a look at my blog when you get a chance.

Bob

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