How I Make Straight Accurate Cuts With The Angle Grinder

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hey there I'm making this video to show

how I make straight cuts with the

grinder and steel I've had people

comment on that before first thing I

need to talk about is some realities of

this and the first and foremost and most

important is that I have a lot of

experience using a grinder and

experience is something that you simply

can't discount a lot of people seem to

think that you know they should be able

to pick up a tool and it immediately

it'll work for them the same way as

someone else who's been using it for

years does and it's it's not like that

I've often made the comparison because

it's something a lot more people do you

know to driving and they're good drivers

and there are bad drivers and there are

experienced drivers and they're

inexperienced drivers and the same thing

holds for any other skill that you

develop through experience so the other

reality I want to talk about is guards

now I'm going to be using a grinder in

this video without a guard because

that's the way I use the grinder I

normally wouldn't use a grinder with a

guard because the guard too often the

guard gets in the way and the fact is I

don't really need it a lot of people get

confused about what the guard is

therefore they think primarily it's

there to keep things from flying at you

when in fact it's mainly there to keep

you from touching the plate you know

you're holding the tool back here and

the blade is spinning out here your

fingers are close to that that's what

the guard is supposed to be there for as

a side benefit it also will keep debris

flying back at you but any cutting

operation with any circular disk

we'll throw the majority of the cutting

like straight off the disk where it's a

tangent to where it exits the material

so if you're cutting through a thin

piece of steel it's going to be throwing

the majority of that steel down through

the bottom reality number three I'm

going to be using a zip cut blade that's

what these are called this is a thin

cutting blade for steel and this thing

here is about one thirty seconds of an

inch thick probably a little bit thicker

than that but the key to this cutting

blade is that it's fiber reinforced I'll

put a picture on the screen showing the

mesh that's in there and that holds this

disc together and the only way that it

can break apart is if you severely

damage it or wear into those fibers so

that you you know where those way they

let go and then parts can break off but

for the most part these things and this

is another myth that you know going

around these will not explode like a lot

of people say unless you misuse them

drop the thing on the on the ground it

breaks the disc a piece may come off if

you wear it to the side of them while

you're cutting because these are only

for cutting straight they're not for

grinding well I see a lot of people

grinding with them when you shouldn't be

grinding with these at all they are not

for that they're just for cutting that

can cause following with the disc it'll

undermine the structure of the disc and

cause pieces of it to break off but if

you don't do any of that and you're

fairly careful with it then you'll be

okay I'm not suggesting here and please

do not take this as this that anybody

use the grinder without the guard that's

not what I'm saying

I'm saying I use the grinder without the

guard because I'm comfortable doing it

like that I'm confident that the disc

will not shatter and I'm also confident

that I won't touch the disc I've touched

this a few times while making cuts

and it's not fun and it leaves a memory

with you so you don't want to do that

again so I'm very careful we're using

the tool not to touch the disk next

reality a reality number four is that

I'm not using a side handle with the

grinder side handles and cutting

straight don't go together unless it's

something that you can get used to with

a lot of practice

it's like anything else you can get good

at something using it in the less

optimal way and still get good results I

don't have a side handle on my grinder I

never have a side handle side handle in

my opinion is only handy if you're

grinding a surface like if you've got a

big Cup wheel on here that has a lot of

mass and you're grinding the surface of

a piece of steel or a concrete floor or

something like that then you can hold

your grinder like this and a handle like

this and you're fine but it's not in my

opinion it's not good for making

straight cuts so I've got my grinder

here it's a plug in one when you want to

make a long cut it's not worth it to use

a battery-powered grinder first of all

they they turn a lot slower then the

plug-in type ones or record it and the

faster that this spins the more

efficiently it will cut so I've got my

line drawn for the length of the piece

and I'm gonna flip it over and I'm going

to support one of my table here and I'll

talk about say reality number 5 and

that's clamping things down you don't

always have to clad things down if it's

small yes it should be clamped down but

something like this that has this much

mass this is a heavy piece of steel it's

very unlikely that this piece of that

this cutting disc can grab it with

enough force to move it to you know

flinging at you type thing so just

holding it with your other hand while

you're cutting should be sufficient now

in the meantime it doesn't hurt to clamp

it down but again I'm not going to be

doing that here okay I'm all set up and

ready to cut I'm gonna be holding the

grinder like this I'm gonna be using one

hand to hold it I'm holding it tight but

I'm not holding a too tight that it's

you know I can't let the cut guide the

blade that's half of what it is to cut

straight letting the grinder follow the

line that you're making and not pushing

it over to one side or the other and

holding or two hands to rigidly better

to start a cut and then let the blade

follow it it's also very helpful to keep

the blade moving and that increases the

cutting efficiency and it'll make the

blade wear more easily so it doesn't get

jammed up in the cut I've noticed that

if you keep the blade in one position

without rocking it like I'm doing here

it can bind up in the Tuck

then after the cut is started the blade

will follow that curve and keep the line

going straight as long as you're not

wrenching it to one side or the other

just let it make the cut at its own pace

without forcing it or pushing it too


all right I finished that first cut

which is the long one I gotta check out

how straight it is even though this

doesn't have to be perfectly straight

for this it helps and this looks pretty

darn good

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