Aluminium cutting

[JAZZCNC]

Otherwise it is Friday here, a time for barbeque and beer.

That's just cruel as it's pee-ing it down here.!!! . . . . But that's ok as it's offset with plenty of the finest Ale in the world. .

[Boyan Silyavski]

I find that Fz=D/100 usually too much. Especially about aluminum. Not talking about roughing bits. Tools 0-2mm is one thing, 3mm is another thing, 4-6 mm another, and so on.

I have Gwizard trial installed but some how this program doesn't engage me, may be the price and subscription put me off.
Just found the free online FSWizard and actually the data it gives is quite near the manufacturer data and very very near at my actual cutting data. So i am quite convinced and maybe even will buy the payed version

The bits i use are mainly Kyocera, razor sharp and polished. Now looking at their data below, some conclusions about how things develop with sizing and type of operation can be drawn. This is quite more realistic than others i have seen.





Vc - cutting speed
f - chip load or feed per tooth
Fr- feed rate mm/min
D- diameter of carbide bit
U- nimber of teeth on cutter
p=3.14


Ae - side removal
Ap - face removal


1.
determine spindle speed rpm/min depending an operation/roughing, slotting, finishing/


RPM=(Vc*1000)/(p*D)


2.


Calculate feed rate mm/min:


Fr=f*U*RPM

[AGTM]

Hi silyavski,

I checked carefully your post and the data which you provided. I completely agree with these parameters, but only if you do finishing. What I mean is that the roughing parameters provided in your table will be applied for finishing by me. I am working with Fz=D/100 and the tools (different range of diameters) sounds and works excellent. This is the tool: http://www.agtmcarbide.co.nz/product-category/agtm-tool-categories/aluminum-alloy-copper-alloy/endmill/aue-series/
In addition, this tool is designed for hard work and high MRR (material removal rate), but this cutter can be used for roughing and finishing as well. ST AUE has been designed for roughing, but it is doing a better finish than Kennametal.
I am attaching the manufacturer's cutting data for your reference. You will see there, that what I have recommended in my previous posts is actually low and safe. And it is because it is proven already by me.
I have sent a samples to JAZZCNC already, I will send you too to give it a try.
If you want to "make a step ahead", send me your address and let me know what diameter suits you.
Here are the cutting conditions:

[AGTM]

Hi JAZZCNC,

Your samples are on a way already. You should have them in a 4-9 days.

Cheers

[Boyan Silyavski]

HI AGTM,

The data is for general 30 degree bits, not for 45 degree specific aluminum bits , that's why we are both right

[AGTM]

Hi silyavski,

Yes, completely agree. If the bits are 30 deg I wouldn't do rough milling with them as you mentioned. They are mostly for finishing. AUE can do both.
Meanwhile, Kyocera have extremely good flat U-drills. They works pretty good on stainless.

Cheers.

[AGTM]

Hi silyavski,

Here I made a picture of AUE1203. Take a look and let me know what do you think.
I will just mention that this tool has polished front and back cutting surfaces. To be honest yes, I am selling these tools, but I can assure you from the user point of view that these cutters are better than many world famous brands, which I will not mention here.

[Boyan Silyavski]

These you show are 3 flutes and seem nice. But I believe here people/DIY, forums/ would be more interested in your AET series 2 flutes, cause they can be used also for plastic and wood, or at the long ones .



Now other thing is the price and place of origin.

Its difficult to convince people to buy something not made in USA or EU. At least me. Especially at similar prices. Thats the truth. I see many sellers /China, Taiwan, etc. / raise their prices and make them comparable to the famous brands. But reality is that a typical small business will search for discounted known brand,overstock sale, a deal or a clearance and will not buy 3rd brands.

Hell, i would not buy, even try other brand carbide router bit while Drillman sells Kyocera bits at ebay, especially at his price. I don't see how sb. could beat him especially for the DIY people market -plastic, wood and aluminum. 1-6mm. Kyocera also have representatives in Eu. Do you know why no body has ever heard of them? I will tell you. Cause they sell for 20euro the 6mm stub 2 flute that Drillman sells for 6$

[AGTM]

Hi silyavski,

Thanks for the reply mate. This what you wrote above is completely fine and understandable. I will not continue arguing with you in any way as in the world there are many different people with different ideas and vision. That is completely fine.
Yes, there may be more interest about some other types of cutters and I might give a 6$ price for them too, who knows? These ones (AUE) are 9.86USD currently if you buy more than one. Whoever is interested is warmly welcome to contact me and to ask me. I will be happy to help him with any information. Let me tell you something very important, which appears you do not know clearly.
There is a big difference between China and Taiwan, I have been in Taiwan already on a visit in the ST factory. Their tools as I said are better than some of the world famous brands and there is no need to look for clearance, overstock sale and whatever.
I gave you a free offer, you did not accept, that is fine.
Whoever wants to try ST AUE is welcome to contact me. I have available AUE samples up to 10mm diameter.
The most important, which I want to finish with is that unfortunately you do not want to even try to make a step ahead.
You have my best wishes and success in your business.

[Boyan Silyavski]

I was relatively speaking about the trying, i apologize, don't mean to spit on your business efforts :-) .

And the link to ebay was not to promote the other guy, but to point it to you , so you could look at what he sells, for how much and how his sales are going.

So compiling what is needed for the typical owner of CNC at home, you could offer it at one place, a good price, and have your cheaper sales, which once when you reach quantity will be very satisfying. Meanwhile you could sell locally at normal prices or just offer forum members different prices. As you know, this is not the only forum, however this is the highest quality forum i know of.

From what i have seen you have quite good price for the extra long reach aluminum ones, for example.