Reddit mentions: The best abrasive cutoff wheels

/u/GoontenSlouch, /u/ArtemisPicks, I did this one by hand and I wouldn't recommend that because it took far too long. I just wanted to try it out at first.

I will likely start off on the rest of them by taking the edges off using these sanding disks. I also have these sanding drums on the way to reach the tighter spots.

After the rough shaping, I put the pick into my vise and used a wide strip of 320 grit sand paper to round off the shaft. I worked on one side for a while and flipped it 45 degrees and did the same for each side. After that I used 400 grit sand paper in a thinner strip to clean things up. I wanted to make sure they were nice and round and free from any pitting the sandpaper may have caused. I may have to turn back to the needle files to put the bevel on the flag.

/u/MeacK777, these are the only dimple picks that I have right now. I have another set on the way that I will detail when they arrive. If you have the time and dedication to put a lot of work into your tools, then these are a solid option. The metal is quite durable because it took more work that I expected.

Are you using a cutting wheel or the grinding wheel? This is the tool, https://www.amazon.com/DEWALT-DW8061B5-0-045-Inch-Stainless-Cutting/dp/B005B8LZ14/ It will do a much better job than a regular grinding wheel.

I would jb weld a plate, then bolt the safe to the floor with the plate against the wall. If they can take the safe home, nothing you do will stop them from getting it open, just like you are doing now.

>i have ammunition in my safe

Grinding/cutting generates heat and sparks. This worries me. I dont want you to make the front page after blowing up your safe. Please be careful.

Hello,

Professional amateur rollerskier here:

Step 1. Pick up some rollerski specific carbide steel tips such as these


Step 2. Use them and keep those tips SHARP! So many people do not sharpen their tips before they go out to their detriment.

For sharpening I reccomend buying a dremel tool such as this and then using these tips

Step 3. Sharpen often! In my opinion, it is better to sharpen a little bit every time than a lot every once in a while.

I hope this has been helpful!

This is the one I currently have, that I'm looking to replace. I thought of purchasing the same thing, but I want to try these ones because I'm broke and it's a better price-point. 😂

> I'm a mechanical engineer grad, so I know all about steel.

Sometimes studying something in school does not make you an expert on the subject. That would seem to be the case here.

> Sure, an angle grinder will cut high carbon steel, but at the expense of the wheel. Grinder wheels can be expensive, and you wouldn't want to waste them cutting HC steel.

Sorry, this is just wrong. Cutting wheels are cheap. Literally people use them daily to cut high carbon steel and hardened steel.

> Just because it'll work, doesn't mean it's the appropriate tool.

Certainly. For any given job there might be a better tool. Or there might not be.

The problem is before you explicitly said you can't use angle grinders to cut high carbon steel at all:

> Not an angle grinder. Cutting that kind of steel you would need to cool the blade. A diamond blade could cut high carbon steel but on a water cooled stationary saw.

Almost nothing in that statement is correct. I mean, yes, you can cut high carbon steel like that, but there are plenty of other ways to do it also, and many of them do not require liquid cooling.

> Grinder wheels can fail catastrophically, and trying to cut through high carbon steel really increases your chances of the thing exploding in your face.

This can happen with low carbon steel too. Angle grinders are dangerous, so always wear proper safety gear. But if you are using them properly they are not substantially more dangerous with harder materials than softer ones. If you have had problems cutting harder materials, it is probably because you are pushing too hard. Grinders cut best with a light touch.

Make sure you’re using a cut-off wheel. It’s about the thickness of a DVD disk. Then position the blade beneath the head of the bolt, and cut it off. The goal is to be able to pull the bolt out from the bottom. Top if you’re lucky.

Link to cut off wheel for angle grinder

4 1/2" Cut Off Wheels for Cutting All Ferrous Metals and Stainless Steel 10Pcs https://www.amazon.com/dp/B078GN6DR6/ref=cm_sw_r_cp_api_i_Lg6sDbPKP48TB

https://www.amazon.com/Dremel-409-Cut-off-Wheels-thick/dp/B00004UDGX/ref=sr_1_16?ie=UTF8&qid=1522925292&sr=8-16&keywords=dremel+accessories

You could

Join West Philly Tool Library http://westphillytools.org/

Borrow angle grinder.

Buy silicon carbide/aluminum oxide cutoff wheel

Make cuts

Return grinder

Or, go to any autobody shop

Walter

get a cut off wheel for angle grinder ex. http://www.amazon.com/Cut-off-Wheels-Cutting-Ferrous-Stainless/dp/B0055PMTOU

they have it at home depot

I use mine on steel all the time. Cut off wheel;http://www.amazon.com/Dremel-409-Cut-off-Wheels-thick/dp/B00004UDGX/ref=sr_1_1?ie=UTF8&qid=1381031263&sr=8-1&keywords=dremel+cut+off+wheel

This is the angle grinder I have: Porter Cable PC60TAG

And these are the cutting disks I bought for it: DeWalt DW8061B5 Cutting Wheel

Will be cutting O1, D2, 1055 High Carbon, and, eventually, Gucci shit like CPM S35VN, all prior to heat treating.


Safe?

Seriously. 50 for $33.

May not be the best wheels, but shit, they're not $20 either.

I just recently had my first run in with shitty thin wheels. two of them crumbled right in a row, It wasn't user error, they were just shitty shitty disks. I had always thought that it was pretty much always the operator doing something stupid but I was using these 100% correctly and they just shredded while still on the grinder about halfway through my cuts. These are what I was using.