How to Grind With the Norton Die Grinder

Hi, my name is Gregg I’m a welding
instructor here at Worcester Technical High School in Worcester, Mass and today
we’re going to discuss where we’re gonna use the die grinder and when we know to
move on to our next stages, stay tuned. so now that we’ve gone over this with
our mini angle sander we’re going to hit it with the die grinder we’re going to get in
all those nooks and crannies with a mini angle sander we did all the flat spots
we got all like the slag off and all that and flattened off the welds, but now
we want to get into the nooks and crannies with a die grinder. I’m gonna
start out using this mounted point right here and it’s gonna get into the edges
here really nice kind of like painting so I’m gonna want to do like the long
areas first and then get into the corners with the cartridge rolls.
Alright so with the die grinder you want to have some finesse with this you don’t have to
like really work on it really hard to let the tool do the work this thing
spins at 25,000 rpm so it can do plenty of the work so have some finesse. Come in
here really slow, and it’s variable speed so you can put it start slow and kind of
work your way up as you go so I if I came into this I know that this space is
kind of gonna be close to this size so it kind of have some finesse and kind of
come in here nice and slow and work that straight edge then I would grab the
cartridge rolls and hit the edges right here and then when I wanted to take the
welds out like bigger stock removal I would grab the carbide burr and put that
on and then go up here and kind of hit where all these welds are. Alright so
let’s get started and we’ll start out with the mounted point So now that we’re done with the mounted
point I’m going to finish the rest of the job with the cartridge roll So now that I’m done with the cartridge
role I was able to get into all the nooks and crannies with it. I also
noticed while I was using the cartridge roll, while they had the mounted point
there was some spots where I was afraid to go flat with it so I thought I was
gonna have to spin this roof rack around to flatten all these edges off because
they’d be sharp if you had that angle on one side but where this thing was kind
of skinny I was able to go in here really lightly with some finesse and
kind of just go nice and soft so I was able to flatten out all those edges so I
don’t have to spin this thing around so I could save some time and again I use
this same cartridge roll for this all the letters on this roof rack so don’t
think just because you use this once it’s junk you could still use these over
and over again. So for the next step and probably hopefully the final step
is I’m going to take the carbide burr, rotary file as I like to call it, and I’m gonna
get into the areas where I have a lot of material I want to take out this weld so
I’m gonna use this that could kind of get in there and take out the weld
lightly. This has like a point on it so I’m gonna come in here on an angle
and kind of just wash my way through this really softly because this tool
take a lot out and if you see any sparks you’re not doing it correctly you should
be able to do it nice and light and just kind of remove that material So now that I’ve removed most of this
stock with the carbide burr I noticed a few things. I’ve used these before so I
kind of knew this beforehand but this one really had a lot of bite to it
so I barely needed to do any work on my own I just kind of put the carbide burr
near where I needed to go and I let it do the work and I’d just kind of traveled
along where I wanted it to go and I actually when I gave it too much force I
could feel it kind of like vibrate and hop and up and here was a little bit
easier it was less of an angle so I could hold it a little bit more and give
a little bit more force. I just like to point out something that if you see my
shirt it’s all shiny from the parts that came off from taking off all that stock.
This shows the importance of wearing PPE. I have some on my gloves while I was
using this I could hear them hitting my face so you need to have your face
shield and earplugs are also great because this things are really loud because
this thing spins at 25,000 RPM but also those little metal
shavings could have fallen into my ear and right now that I like kind of like
nice like I’m bedazzled but they’re also hot so that’s why also long sleeves
earplugs face shield and gloves. So our final video of the series we’re gonna
finish up with a cartridge roll where I’ve already worked with a carbide burr just
to smooth out these edges, so stay tuned. you

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