We all have heard hundreds of times that when chatter is happening during machining, we should reduce our feed rate. The same advice we also hear for compensating for extra-long tools and unstable setups.

Let me explain why I think this is mostly incorrect.

Let’s list  the effects of reducing the feed rate:

1. Reduces tool life.
2. Reduces productivity.
3. Increases deflection.
4. Causes chatter.

Let me explain from my own experience and research I have made each of these points and a simple way to avoid chatter's adverse effects.

Latest advances in tool technology make milling of high carbon and tool steels as reliable and predictable as benign aluminium alloys.

In this video a large 4140 steel component is being roughed out at 2700RPM and 600 inches per minute.
While achieving  impressive material removal rate (20 pounds of steel machined off in a matter of half an hour!) the tool life puts the old school square shoulder endmills to shame.

Yes, it could(and should) have been machined using a bigger cutter, but I wanted to put the tool to the test.
And it performed beautifully: Was able to surpass the recommended starting speeds and feeds by at least 170%!

Look for the HSM machining of the round central pocket in the beginning.
Here we have a 12mm 6 flute Coated hi-performance endmill, cutting 1" deep at 0.047" (10%) rWOC.
at 10000 RPM and 300 ipm feedrate. the chipload works out to be 0.005". Material is 4140 pre-hardened steel.

Impressive isn't it?
Those results have been achieved with uber-expensive BlueSwarf tap-test technology.

This is one video that caught the eye of one of my HSMAdvisor trial users:

Being a geek and wanting to help the user make the right decision I immediately punched the numbers into my HSMAdvisor app.

Here is what I've got:

It does not annoy me anymore!

Originally this part was programmed for and machined in 6061 aluminum, but when production run came, material was changed to HRS and then to SPS (4140).

Luckily reprogramming using HSMAdvisor hook for MasterCAM is a bliss.

Mere 5 minutes and all speeds, feeds, depths of cut, etc. were changed to safe and productive values.

New Material

Being as vast and as complex as it is HSMAdvisor Tool Database may seem overwhelming for many users despite all the benefits of using it.

To address this issue I have just added a new category to our HSMAdvisor on-line Help resource called Tool Database & Tool Inventory

Here is a the opening article of that category:

In all there are 5 articles in there already describing many of its functions in detail.
Please check them out if you are not sure what the Tool Database does and how to use it.

And as always: when in doubt - ASK :)

I personally use HSMAdvisor at work every day and trust its results 100%

I have to say my program now knows about machining more than i do. I certainly can not remember cutting speeds and feeds, reduction factors, depth of cut and a ton of other information for every material I have ever cut.

Now add to that the various possible combinations of tool/material/coating and it becomes a no brainier, that a good speed and feed calculator like HSMAdvisor saves a ton of time and money by improving your tool life and productivity.

It is not only good for HSM (High Speed Machining) but also for general machining, drilling tapping, you name it.

The algorithms it employs are far superior to what other calculators are using. Take for example the real-time depth of cut/deflection optimization, that other calculators do in a separate window and take a few seconds to complete.

Here is a quick video lesson where i show the steps involved in creating a simple contouring toolpath in MasterCam x9:

And here is the video of machining the actual part:

I regularly follow practicalmachinist.com forums.
Especially the cnc machining section of it.

I notice when CNC Speeds and Feeds questions come up people often suggest my HSMAdvisor Machinist calculator.
A referral by a satisfied customer is the best referral in my opinion. Thank you to everyone doing this great favor to me and my prospective users!

Other times users of HSMAdvisor question speeds and feeds it generates and instead of going to me, they ask on forums.
Which is always fine, because extremely often "wrong" results mean something wrong in users expectations or the data he feeds the calculator

In the process of discussion it usually turns out that the calculation results were correct, but because user decided to use a depth of cut or tool length, larger than he should have, HSMAdvisor compensates and gives a very conservative feed rate.

Just like in this forum post over here: Engraving with a 1/32 ball mill machinist wanted

Tool Inventory Advisor is now included into all HSMAdvisor License types!

This feature is absolutely free for HSMAdvisor customers. No special login is required. It is already built in!

Please download the latest update to enjoy the latest update!
Some video tutorials will be published this weekend.

Also in the this update:

• Changed the look of Material and Tool drop-downs
• Added search to Tool list drop-down
• Uploaded new machines to the HSMAdvisor Cloud
• Improved function of Tool Library
  Fixed small bugs
  "Shared Database" flag is now set in the database file itself

I have not announced the previous update here, so i am going to cover the latest changes here.

New and Improved Things:

• Fine-tuned Speeds for drilling tools
• Added more database self-repair capability
• Added "Uddeholm" vendor' material family

An update to port those changes to Android and IOS apps is under way

Would like to thank everyone for their continuous support and feedback.

I do not know what i would do without you guys!

Thanks!