One of the latest additions to HSMAdvisor speed and feed calculator is the ability to set manufacturer-recommended speeds and feeds for work-piece materials and groups of materials.

Here is a YouTube video walk-through showing how to add S&F tables into the program https://www.youtube.com/watch?v=AJOgWfgy99U

HSMAdvisor uses Brand Name and Series Name to assign speed and chipload tables to tools.

A new "Speed and Feed Source" (S&F Source) indicator has been added to quickly tell user which speed and feed table is being used right now.

I have received a lot of praise and thanks for the easy to navigate interface in FSWizard:Mobile calculator.

Those collapsable accordion-style sections that carry some information in header portion come in really handy when having to put so much information on one small screen on your Android or Apple device.

Lately I felt the need to do something like that for HSMAdvisor as well. It has been over two ears since I came up with that design. And since then massive amount of features I believe overloaded the visual part of it.

It seemed very crowded and busy looking.

So, knowing that collapsable accordion panels do work, i moved all UI elements into them.

This has somewhat changed the percieved workflow of the program and at a later time I will release a series of videos showing off major hints on how to use my tool efficiently and achive best results.

For now please download the latest update. Take it for a spin and tell me what you think.

My email and forums are always open for questions and suggestions

Looks like Adam Savage from Mythbusters got himself a new cool toy.

Check this out. It is a robotic spider. Made of 3d-printed parts it can move sideways, back up and maybe even shake your hand

It is rather expensive though.

He pre-ordered it from a Kickstarter project. But right now according to the video they go for around 500$.

Do not show it to your kids however. My son almost had me buy it.

HEM is a relatively new term.

It means High Efficiency Milling. It only became available when constant tool engagement toolpahs became almost standard on most of the CAM software.

Unlike HSM that utilizes chip thinning effect, HEM relies on much larger widths of cut and thus chip thinning does not occur. What gives it its name is much higher material removal rate that would normally be possible.

When you are machining a pocket you are most often only milling at about 50% WOC. But nevertheless you need to calculate speeds and feeds based on the fact that the very first move and every corner will be full slotting action. Which means that the whole pocket needs to be machined at lower feedrate.

HEM uses constant engagement toolpths to make sure that this never happens and that Width of Cut remains optimal. Tool never needs to make a full slot so you can ramp up the feedrate as if you were doing outside profiling.

Here is a video of a 1/2" 3 flute endmill machining a 5/8" deep pocket in aluminum at full depth. Normally this pocket would have been machined in 2 steps at 150 inches per minute.

Using Constant Tool Engagement toolpaths we can go full depth at 0.175" stepover and 275 inches per minute.

The advantage of this method is obvious- Higher Productivity.

HEM is not ideal for all cases and each application merits its own method of machining, but its always nice to know more than one way to do your job.

This is another video from his Productivity Series.

In there we get a quick demonstration of HSM techniques Eric is using to produce his beatiful vise.

Also my own HSMAdvisor is featured there!

Thank you Eric!

Orange Vise are produced in the USA.

Check out this website for more info http://orangevise.com

Lately there have been a lot of really interesting HSM topics on PracticalMachinist forums.

In one of them a guy who owns his own resharpening business posted a video of his endmill milling a block of D2 hardened to over 60 RC.
The forum topic is located here First try on D2 62Rc(video)

Here is his post so you know what we are talking about:

In the ensuing discussion i posted my own take on how and why HSM works

HSM works in many ways.

1) Reduced cutting time per edge per revolution allows it to cool down more.
2) Chip thinning allows to increase chipload (advancement per tooth per revolution)
3) Increased depth of cut combined with shallow radial positively affects deflection. Tool bends less as it is more rigid towards the tool holder.
4) Higher cutting speed actually reduces cutting forces as heat generated in the cutting zone makes it easier to shear off a layer of metal. Yet because the time of contact is so small, most of the heat is carried away with the chip.
5) Higher RPM also allows to get rid of hot chips faster thus further reducing heat transferred to the tool.
6) Higher feedrate actually reduces relative cutting speed.
7) At high axial engagements more than one flute is in contact with the workpiece at different points along the axis of the tool. This too helps combat vibrations and chatter.
8) You are using more of the tool than just its tip, so technically you can do more work with one tool before it gets dull.
9) lastly it looks cool as hell and is very impressive. Whenever we know visitors or bosses are coming we try to make sure some HSM is going on even if application does not merit that
I am not sure if the air that is moved by the endmill is doing much, but i suspect he didn't mean exactly that.

Check this video out.

The whole thing is pretty impressive, but the best part starts closer to the middle of the video. At around 3:20 you can see the size of the machine. Truly amazing.

Note: TURN YOUR VOLUME DOWN

Here is a video of a 3 flute Hi-performance endmill slotting aluminum 0.75" deep per pass.

Well, not entirely slottimg, more like pocketing, but the very first move is a full width slot.

Stepover is 0.4"

First i calculated the cut on HSMAdvisor.

Used 6061 aluminum as material and HP endmill at a tool type.

Tool torque and deflection limits were both set at 100% and performance slider was at maximum.

This is what it came up with:

S9127 RPM 125 IPM.

Full slot, 0.75" deep.

45 in^3/min mrr.

Looking at how easy it went i think i should allow for more load in my calculator.

If you have not yet tried HSMAdvisor, make sure you do.

You will be amazed at how much productivity you have been missing out on.

This video was uploaded a couple of days ago and has sparked fierce debates on PM forums about its feasibility.

There is no official information yet, but some are already wondering how accurate and cheap it is going to be.

.....and this is why they are so heavy.

I have stumbled upon this video the other day.

It shows a very good reason to keep those doors closed at all times when runing your machine.