Tag Archives: disc

    • Building Bumper Brackets To Take Abuse

      I must admit that when it comes to my projects I have A.D.D, especially one as large as Pile House. Sometimes life gets in the way or we have other projects going at Eastwood (like our Project Resolution Mustang), that I can only devote small amounts of time or maybe a day here and there on the truck. When that's the case, it's tough to start or finish projects that take a big chunk of time to accomplish. One of MY resolutions for this year is to finish all the half-done and partially finished projects on Pile House.

      One project I had started a while ago was the custom front bumper build for the truck. I did what many hotrodders have done throughout the years, and hit the junkyard to find a suitable part to modify and retrofit to my truck. The result was a bumper bar that looked close to original.

      front bumper

      Since then I've done a lot to the truck and the bumper has sat under a layer of dust in the bed. The other day I had a spare afternoon to tackle the rest of the bumper project. The biggest task left was how I was going to mount the bumper to the truck. With it being winter here I decided to opt out of another junkyard trip (removing rusty bumper brackets in the snow is NOT my idea of fun). Instead, I took some flat steel and made up a set of mounts. These mounts needed to be strong enough to help support the weight of the front end of the truck when I lowered the airbags down. I didn't want the sheet metal taking the weight every time I aired the truck out, especially if someday the truck will have nice paint on it!

      So I started by cutting some 5/16" steel plate to length. I planned to make a triangulated mount that would help hold the weight when transferred across the front bumper.

      The first piece we needed to make was an "L" shape out of the flat bar stock. In order to get a nice bend in this I used the oxy-acetylene torch to heat up where I wanted the bend, then I used some leverage with some pipe to make the 90 degree bend I needed in the bar. The key is to get the metal "cherry red" hot where you want the metal to bend. With the bends made in the bars, I cut some more 5/16" plate and triangulated and braced the pieces I bent. This will add rigidity to the bracket. In order to get a better fit-up of the cross brace, I sanded an angle into the ends of the brace with the Belt/Disc Sander and finally tack welded it together with the MIG 175 welder.

      With the bracket starting to take the basic shape I wanted, I cut another piece of 5/16" flat bar that I could weld to the backside of the bumper and the bracket. In the end I want to shave the bumper and have no visible mounting holes, so the bracket must be welded to the bumper bar itself.

      Finally, I test fit the bumper and drilled my mounting holes to attach the bumper to the S10 chassis under the body. Once I was happy with the fitment of the bumper, I took it off and finished welding all of the seams on the brackets and the bumper bar with the MIG 175. I then decided to add some additional bracing to the bracket to help combat any bending or flexing of the bracket when the bumper is laid on the ground.

      This left me with a bumper bracket that resembled a jungle gym and I wanted to box it all in so it looked a little more "finished". I decided to take some 18 gauge steel and cut pieces to the shape of the sides of the brackets. Since I was covering the inside of the bracket, I decided to seal up the soon-to-be-hidden areas with some Gray Self Etching Primer. From there I used the Eastwood TIG 200 DC to weld the panels on. Once all of the seams were welded I blended them all together with a flap disc

      Now that the bumper is mounted it really makes the front end look more complete AND I'm not lowering the truck down on the front sheet metal anymore. When it comes time to disassemble for paint I'll blast the inside of the bumper with some rust encapsulator and chassis black to keep them corrosion-free for the life of the truck. With that old project finished, I can now move on to all the other loose ends I have on the truck!

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    • Patching Fender Rot

      It seems like all we talk about when working on Project Pile House is the rust and body damage it has.. but again today we're covering the repair of more rust that's on the truck. This time it's on the sides of the fenders where the cab mounts attach to the fenders. Originally they sandwiched multiple pieces of metal together and riveted the mount through them for additional support on the fenders. This spot is very prone to rusting on these trucks and should definitely be addressed. On Pile House both fenders were rusted badly and the rot was covered with a heavy coating of body filler to hide the damage. In my effort to clean up the exterior of the truck, I wanted to get rid of the rust and rivet heads when making the repair. In the end, I modified the cab-to-fender mounts so I could spot weld them to the fenders after positioning the fenders to get an even gap where the doors and fenders met. This was pretty boring, time consuming, and hard to photograph.. so I'll save you the winded post about that process in this update, and focus on repairing the rust and smoothing the fenders.

      The first thing I do when making a repair like this is to use painters tape to mark out the area I want to remove and repair. I usually tape off just a little further out than the rusted area so I can be sure that I'm into good metal when welding the patch panel in place. It's really difficult to weld thin, heavily pitted metal, so it's best to remove a little more so you can get a clean area to work with.

      The other nice thing about the painters tape is that it gives a nice straight line to follow as you cut out the area you're repairing. I chose a 4 1/2" Electric Angle Grinder with a cutting disc to make the cuts. I just put the edge of the cutting disc against the inside edge of the tape and followed that as I made the cut.

      Once I had the cancerous areas removed, I cleaned the area surrounding the hole with a flap disc. With the area prepped, I could then make a pattern of the patch panel I needed. I chose to use a manila folder as my pattern, although you can use thin cardboard, chipboard, construction paper, or any other thick paper product. Chipboard is often the best to use as it behaves the most like sheet metal, but construction paper or a manilla folder will work ok as well (and is easier to find). Once I traced and cut out the patterns for each patch panel, I transferred the pattern to the metal and cut the rough shape from 18 gauge steel with the Electric Metal Shears. Once I had the rough shape cut, I could then trim the piece to shape with a set of Eastwood Aviation Metal Snips. After I had the patch panel close to the size I needed, I used the curvature of the fender to give the patch panel a slight contour to match the fender. Alternatively you could use a pipe form, a Slip Roll, or even an English Wheel to shape the panel. But in this case, the curve needed was so slight, using some muscle and the fender as a form, gave me the shape I needed.

      On this repair, I chose to use a set of Intergrip Panel Clamps to gap and hold the patch panel in place. Then the Eastwood MIG 175 to weld it all together. The key with using the intergrips is to use the aviation snips to carefully cut the panel just a bit smaller than the opening so that the mounting plate for the intergrips can slide between the old and new metal. This allows your welds to bridge and fill the gap.

      Once the new metal is clamped in place with the Intergrips I used a flathead screwdriver to get the panel centered in the opening and began laying a few quick tack welds to attach the new metal in place. From here I like to move my intergrips around and tighten them in place after each tack weld to get the patch panel flush with the surrounding metal. On a curved panel like this it's important to make sure the curve of the seam matches. Once the patch panel is tack welded in place and lined up correctly I removed the Intergrips.

      Now that the patch panel is tack welded in place, I began stitch welding the joint closed. I like to jump around the panel making quick, hot welds. On a patch this small I had to be careful not to introduce too much heat into the panel and warp the metal. I like to keep a blow nozzle from the compressor handy to hit the welds and metal with cool, compressed air every few welds. I make sure the panel is warm or even cool to the touch before I continue laying stitch welds. If the metal is too hot to touch with your bare hands, you shouldn't introduce anymore heat into the panel until it cools. After some time I ended up with fully stitch welded patches that didn't have any major warpage.

      After I've made sure the panel is fully welded, I used the flap disc on the angle grinder to grind the proud welds down. The key is to grind across the welds so they're flush with the surrounding metal. If ground too much, the weld joint will be thin and weak. With this repair method you should be able to grind the welds pretty much flush with the surrounding metal. I then used the Eastwood Pro Hammer and Dolly Kit to bump up any low spots from welding. For now I sealed the repair area with Eastwood Self Etching Primer until I'm ready to lay body filler, primer, and top coat.

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