Created by Mike Losh
Post from the 67-72 Chevy Truck forum
Available for 60-66, 67-72, and 73-87 Chevy GMC Trucks
Get yours from Rob on the 67-72 Chevy Truck forum
These things are awesome! Can’t wait to get to the stage on my build where I can mock these in place to get a first glance.
Rob is a great guy who thoroughly researched and delivered an exceptional product much needed for us truck nuts.
How to Grind Metal
This information is provided here as a re-post from this article on the 67-72 Chevy Truck Forums.
there seems to be allot of confusion on how to grind metal, I am gonna try my best at helping everyone out some, I still have more to add, but this will be a start.
FIRST: THE TOOLS NEEDED.
6″ Dynabrade for my finish work, this does finer swirl marks in the metal, creating a more uniform appearance.
6″ Dual Action sander, AKA,”THE KNUCKLE BUSTER” if you know the meaning of this, you have used one. used for medium sanding
8″ Mac sander/grinder, used for initial knockdown and leveling.
“Don’t be afraid to dive in and tackle these tough jobs, the right tools and techniques will see you through!.”
:Grinders, there are several, this is what I use
Bosch 4.5″ electic grinder with either a flap disc or grinding stone, or cut off wheel. This is my favorite.
El Cheapo air grinder for all of my Carbide bits, these are used for corners and any place I can not grind with a stone
Air tool for my cut-off discs and 3″ grinding stones
Mac 90 degree grinder for my ROLOC discs, ranging from 36 to 80 grit, also comes with abrasive pads and surface pads.
:Safety Equipment, A MUST HAVE!!!!!!
proper gloves, I use tig welding gloves
3M particle mask
heated the metal along the way, NOPE. stop right there.
you never want to heat the metal when grinding, especially when it starts turning blue, bad, very bad, you just warped your metal and
now have more work to deal with.
The first thing to do is grab a 3″ hard grinding stone, or one on the electric grinder and slowly, I mean slowly, grid down that weld, get
it close to the surface of the original metal, without touching the original metal. It takes practice, I know.
Once you have it close to the bottom, switch over to your ROLOC disc and start smoothing it out, never put too much pressure on the
metal itself, just let the grinder do the work for you, nice and easy does it. This will take some getting used to but once it is mastered,
you will have won half the battle.
Now you have some marks either in 36, 50, or 80 grit leftover from the grinder, what now? Leave them? nope, depending on how bad
you have cleaned up that weld, you can now use your sanders and smooth them out.
I always use 80 grit on my pads to do this. Sand it for a bit and you are done, 8 out of 10 ten times, no “mudwork” is needed.
You have just mastered spot weld grinding.
do these types of welds, Patience will prevail.
Depends on what you have and how you feel. Now remember to go slow and let the stone do the work for you, nice and easy,
Do not to rush into things! otherwise it just gets messy.
caused more work for yourself.
allows me to remove material quickly without pressure and does a nice smooth job. I never go to hard with this one either.
uniform surface. If you still feel wearily about getting too close with an electric grinder, then just finish it up with you ROLOC disc and
smooth it out.
done, I use my D/A sanders and finish the job, nicely ground down and sanded, nothing looks better than this.
seams, stitch welds, frames……
area to smoothing out that corner that nothing else can get to, to creating a nice radius in a transition area.
next, but it could be the right diameter for a job that you are trying to get a smooth grind in or transition.
a radius or doing a corner, they hardly bite and more pressure can be put on them.
that old used one works better for edges> You can just trim it down some on the edge and you have a brand new, but smaller flap disc!
Porterbuilt Fabrication 67-72 Truck Hood Hinges
There are some good reference articles for installation out there, here is one by another talented guy.
Additionally, I am pleased to know another very talented and great guy to deal with (Rob). He was trying to come up with a better mouse trap related to the PB Hinges, his brain power and ultimate creation are some slick gems in the form of mounting brackets.
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Here’s a few shots from one of Rob’s projects. along with a thread he has on the 67-72 Truck Forum
Total bed mods thanks to Rob!
Post is from the 67-72 Chevy Truck forum