What I learned today.

[Robinhood4x4]

Cutting a 1/2" diameter hardened steel end mill bit takes a long time with a cut off wheel on an angle grinder. :laugh:

I first tried a dremel cut off but it just bounces off the surface. Then I went to the angle grinder cut off and it basically just polishes a line into the steel, kinda neat actually. I got about 1/16" into it and then I got to thinking about my old job where I had to cut extremely high density ceramic bricks for the semiconductor industry with a diamond cut off wheel on a dremel. Luckily, the costco dremel accessory pack had 1 diamond wheel. I chucked it up, got a wet paper towel to drip water onto the surface. After about 15 minutes I finally made it all the way through, but I think I used up all the diamonds.

[slosurfer]

What were you cutting an end mill bit for?

[4x4mike]

A half inch one at that.

Sounds a bit like my bed frame material. I think it was a mix of all the crap metal at the bottom of the bucket. Pretty damn hard.

[CJM]

Cutting wheels in good grinders go far and you can even get diamond tipped ones iirc.

A cut off saw with a diamond blade woulda done you good dude.

[Robinhood4x4]

Let's just say I need to fill a hole in something and it needs to be tamper resistant.

Last night I remembered my grinder came with a diamond tile blade. Doh!

[slosurfer]

Let's just say I need to fill a hole in something and it needs to be tamper resistant.

Last night I remembered my grinder came with a diamond tile blade. Doh!


Anal plug? Must be mad at your BF :laugh: :flipoff:

I was about to say, I use diamond blades all the time. :flipoff:

[Robinhood4x4]

Dude, I know all of us asians look the same, but I'm not Bob! :flipoff:

By the way, when you use the diamond blade on the angle grinder, do you use water for coolant or just run it dry?

[paddlenbike]

I do everything the hard way. :roll:

[Robinhood4x4]

But it's ok when you do it Ken, because everything you touch comes out looking :bling:

[CJM]

I would use water, but then again the internals of the grinder could become wet. I always took my time cutting stuff tbh. Ladt big thing I cut was some bed frame angle iron the my plain jane grinder with cutting wheel zipped thru it and thats some hard damn steel.

[slosurfer]

Dude, I know all of us asians look the same, but I'm not Bob! :flipoff:

By the way, when you use the diamond blade on the angle grinder, do you use water for coolant or just run it dry?


I don't use it much to cut metal, but I imagine a little water would help. Most the time, I switch to a cutting disc for that, but it's good to know that I could if I run into some really hard metal.
I usually use it to cut block, stone, stucco, concrete, etc... and I usually just do it dry. Most the time, I just wish for water so as to keep the dust down. Those diamond blades are pretty good though, I also use it to trim up door trim and cases so that tile will fit under it. Cuts through hardwood pretty good, but smells like it's about to catch the wood on fire. I've set off quite a few smoke alarms when I've done a bunch of doors at once. :laugh: