High Speed Steel End Mills are Better than CARBIDE

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#CNC #Machining #Machinist

[blaynheimann]

As the young machinist mentioned in this video Barry is by far the best programmer I have ever had the pleasure of working with. I’m glad to see him doing big things now a days!

[douglaspierce]

I programmed a medical part from 17-4 the other day. The machinist came to me and said the 1/2 in endmill is running too fast. I looked at it and said its fine. I explained I was using a high speed strategy. He said he knows but, they've never run a 1/2in endmill in 17-4 over 2500 rpm even with a high speed machining.. I told him if it doesn't work, lunch is on me. He never came to claim his free lunch.

[tomb]

Machining is the epitome of “Every tool has its place”

[davidchavez]

This is great advice, so long as the programmer knows how to leave an appropriate finishing pass. I got tired of hearing programmers saying "the cutter can handle it" and not understand that due to deflection the parts had taper and were out-of-round. There is a time for hogging and a time to "kiss" it just right as Titan says.

[randywl]

I'm not a machinist, but when I watch the videos you guys produce the speed at which they move just totally freaks me out. Those machines are just incredible, its enjoyable watching them operate.

[thylacine]

Im no machinist or mechanical engineer, but I sure love watching this stuff. If I was a young man I'd be begging you for an apprenticeship. But I do have a skill that has served me well for many years. Im very good at picking the difference between BS & wisdom. I got a pleasant dose of wisdom from this vid. Thanks. Rock on.

[mobilePCreviews]

yup i work at a small company that's stuck. They have no money to buy good tooling, but they have no money because they keep wasting it on crappy tooling and having to pay machinists to sit there staring at the machines running at 1ipm. I had to make a 2x2x11 inch slot in multiple 316 stainless parts and they hand me an old 5/8 HSS roughing endmill. it took me literally days to do these parts between the broken endmills and the incredibly long time it took to machine these parts. 1ipm machining sucks. Then I needed to tap these parts, I asked for at least coated taps. Instead i'm given an hss spiral point tap to use on blind holes. I asked for spiral flute taps and they said they "break too easily" and didn't want to use them. I said I can manually program a thread mill (since cam is a "waste of money"), they said those are also a "waste of money". I keep trying to help them but they ignore me because I'm fairly new to machining. trying to help them change but it's never going to happen, they're way too stuck in their ways. sometimes all you can do is shake their hand, thank them for the opportunity and move on with your career.

On a side note i actually managed to get my hands on some 11/16 carbide spade drills and I showed my boss the drill running at 1500rpm and 8ipm into some a36 and hes "never seen the machine run that fast before". I told him that's on the low end of what's possible with modern machining techniques and tooling but they still don't want to change.

[EricCheVe]

Now a days HSS still have some good aplications due to 2 things, first as u said it deflects more, and second the edge can be thinner than carbide if u are buying high quality HSS like HSSE-PM and thats a game changer for some materials

[gerrit]

I agree so much with this story. yesterday I tried upping the speeds and feeds in off time with my own endmills and the results were pretty insane.
I ran a pretty low alloy construction steel at 300m/min(984sfm) with a feed per tooth of 0.2mm(.008") on a 10mm 4 flute endmill and was amazed how long it lasted
at a 14mm doc and 10% stepover. I am pretty much the only one at work trying to utilize modern toolpaths and i wish it was different.

[voccy]

The shop I work for was mainly only HSS for my first couple years. Once we made the change to carbide, it was like a whole new world opened up. What we paid in double the price, was later saved when we were using carbide tools 20x+ longer than HSS. Great video.

[fltchr]

The lathe I was using the other day maxes out at ~350 rpm, a pre-WWII Monarch. When I first came upon it a while back it had some carbide tooling with it, needed a 1/2" spacer to raise the tool post, and no one was using it. I found a 1/2" HSS blank buried among all the tooling and ground a cutter from that. It does what it needs to do in our shop.

[NC-oyhq]

When I started my last job, almost all the tools were hss. When I left, almost all tools were carbide. But not all. Some hss cutters couldn’t be beat for the application. The owner was scared of breaking expensive carbide at first. I’m glad I helped him see the light. And he was grateful. One of the few good owners out there, the more money you made him, the more you made. I may even go back and work for him when I want to “retire”.

[ng-htvx]

I have just manual mills. I've found that in most cases, HSS is better for that mill than carbide. I do have some carbide for dealing with harder materials. Both work good. HSS is less likely to chip off though.

[MFEeee]

I’ve been watching your channel for years. I was a generator mechanic turned designer in the Marine Corps dealing with 3D printers and marveled at machining. I bought a lathe, mill and mini CNC router. I attempted it once and felt mediocre and didn’t touch anything for years. Over time I became an expert at 3D printing so much so that I started making my own. Now I’m on an all new project and needed machining services. I took a look at my machine and said to myself why not. Gave it a shot with a carbide 2 flute flat end mill. I was surprised at how clean my job came out despite the low speeds and the part being aluminum. I now plan on making my machines CNC.

[mrbeans]

This stuff is so cool. I used to work for my uncle during High School machining threaded rods and fasteners. Absolutely loved it! I know the basics. Not a lot of cnc or cad work, mostly dyes and presses. But It was such a fun job!

[Nextlevup]

I work in a job shop for over 20 years and we use about 80-90% of HSS tools. That has to do with our machines. Some are 30 years old and almost no maintenance was done on them. We have chipped spindle everything is loose old adapters. 🤦🏻I’m jealous when I watch you guys slay that metal

[josecamacho]

That's how fast I expect my DIY CNC mill to run when I finish it

[ryanjordan]

I can tell my man Berry was shocked by thumbnail!😆😆😆 I watched the video and had the same reaction!!
Love it

[goldenmath]

If I had someone like you running the shops I worked in I would have stayed in engineering
I ended up buying my own cutters in because the shops cutters were so bad, all HSS
Very few shops have the mentality to succeed
I started my own business instead, design and build

[TheExplosiveGuy]

I worked in a shop that wouldn't even spend the money on decent HSS, they only bought Chinese HSS cutters that were dull and chipped with burrs all over the cutting edges right out of the box, it was always a fight to get them to order me decent tools (I was the only machinist in the building). On some jobs I was able to get them to order carbide for tougher jobs like stainless steel but they never got anything name brand or coated, just plain cheap carbide which inevitably broke or chipped. I was pissed when they laid me off, until my old boss called me a few weeks later and hooked me up with Cobalt Enterprises in Washington, they were a tiny machine shop back then but the owner knew the value in quality tools and I never had to deal with cheap tools again, and I also learned about high speed machining there which really opened up my knowledge of machining. Last I heard Cobalt was employing over 200 people and bringing in several million per month, I unfortunately had to quit the machining industry due to me developing severe coolant allergies so I haven't kept up to date with the company but they won a bunch of business awards not too long ago.