In my days machining blow molds there were lots of parts where I had to make a completely through hole. Sometimes those were up to 4 inches deep and I had to go from both sides!

The trick to machining cores like that is to leave about 0.05" on skin all around AND pick milling direction and start point such that when the last bit is milled through, the core gently pushed away from the cutter instead of jumping out.

Small stripper plate. 1.75" high Big stripper plate. Also 1.75" high

After almost one month of waiting for parts, tracing wires, testing, soldering, and assembling. Here is the finished product!

Milling case hardened t-slot nuts:

Quick Tool change action with Tormach TTS holders:

On the heels of the previous post.

YouTuber Breaking Taps has just published another of his interesting videos:

In it he is testing various High-Speed Machining techniques on his benchtop CNC router.

Also it is mentioned that HSMAdvisor does not seem to like those small high-feed cutters: at some point some calculated values become negative.

This is a legitimate criticism and it actually happens because default cutting depth of 0.024" becomes too large for the 0.24" Lakeshore high feed and mill and an actual Flute length of 0.015" must be entered in order to get proper values:

With actual 0.015" flute length entered the recommended speed and feed values are now in the safe end of the ballpark suggested by the manufacturer.

Task added to the issue tracker!

Version 1.605 brings us the following new features:

• Width of Cut for milling tools can now be set as percentage of the tool diameter.
• Speeds and Feeds page now has bigger header with more information and bigger fonts.
• Added pilot hole for taps and readers to the cut info pane.
• Improved the functionality of the Scientific Calculator.

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Howdy everybody!

I hope you guys enjoyed your weekend.

Mine was a productive one.

FSWizard Online has had a big update and now Materials list contains all material groups:

There is a catch, however: In the free version, ONLY material groups are available.

To get all the avialable materials you need to go to Settings, click on the "Customer Login" button and enter your FSWizard PRO credentials.

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We have many helpful articles over at HSMAdvisor Help portal. But beacuse of that very reason not many website visitors actually read any of them.
It is a pitty that most advanced users will never actually visit the help section, because they already know how to operate HSMAdvisor.

And this particular one, I believe, is too useful (I just updated it to include more info) for my customers and other machinists to keep it burried in some help section that few ever read.

So here you go:

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Today was quite productive.

All the remaining milling tool types have been finished.

The last one to complete was Chamfering tool type:

Looking at the HSMAdvisor's tool graphic on the right i realize how useful it is to understand where your tool engagement is.
Especially so for tapered, Ballnose and Chamfering tools.

FSWizard does not yet have that functionality, but i will definitely try to add it in one of the updates after the initial release.

Before we start milling away our stock we first need to get down to the required depth.

This is not a problem with external features when we can plunge outside.

When machining closed pockets, however, we need to find a way to get down to the machining depth first.

As usual there are several ways to get the job done. The plunging methods listed here are not ordered by their preference.

For various machining operations on different materials some may be more preferable than others.

Straight Plunging into a larger Pre-Drilled hole

This is one the best ones in my opinion.
Very few machining modes can compete in effectiveness with drilling and this method will get you the best combined tool life on most materials and (in case of many deep pockets) the least machining time, even when tool change time is factored in.

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Hello everybody!

I have not made many blog posts here lately because i have been working a lot on new features and simply did not have much time for anything.
So I decided i'd make a little report on how we are doing and where the project is.

First things first.

I just released an update to HSMAdvisor v1.503

• Drilling tools now consider Shank Diameter when calculating maximum allowed torque on the tool.
  This will lead to more safety when using, say 1" tool with a 0.5" shank.
• Thread Milling tools have been immensely improved.
  Shank diameter is now included into the calculations.
  Default Length is now 2.5 diameters
  Improved suggested cutting speeds and feeds

Our Multiple Language Translation Program is chugging along nicely

Several people messaged me about intentions to build translations so far.

At this point we have people working on translations for the following languages:

• Croatian
• Serbian
• Portuguese
• Perhaps Polish (I see someone uploading translations, but the person have not contacted me about it)

Mobile FSWizard app is due for major improvements

Major visual re-design is under way and we are working on making FSWizard Mobile accessible on more devices in more ways.
It is going to be a fully fledged WEB app, that can be run on any internet-connected device. Even on a desktop.

Integration with HSMAdvisor Machine Profiles and Tool Libraries is also planned.

Perhaps we are going to drop native support for Google Play and iOS stores. I am sick of them charging us 30% for their services.

HSM with MasterCam Dynamic Milling has long been one of my favorite toolpath strategies when machining hardened and tough to machine steels.

The job at hand was to machine out a 5" disk out of pre-hardened 4340 steel. About 43RC hard.
Due to an island in the middle (leaving only 3/4" room for the tool) I could not use a bigger indexed cutter, so i decided to use the adaptive clearing toolpath.

I started out by calculating Speeds and Feeds with HSMAdvisor and come up with the following starting parameters:

Full depth, at 10% engagement.

Which worked just fine. But the tool was not new and I decided to sacrifice it in the name of science and maxed it up to see how long the tool was going to handle it.

So I adjusted the cutting speed to 170% and feed to 150% (which accounts to heavy roughing):

To be honest I was not sure the tool was going to last very long, but it exceeded all my expectations!
It lasted for about 2 hours and completed the whole run of more than 20 pieces.

I even took a video cutting one of the parts:

Note how there are no sparks coming out. This is because the chip is thick enough to not overheat. This works both ways. Chips stay cool and due to their larger mass carry most of the heat away from the cutting edge.

After the end of the run (and it was not new to begin with) the tool looked like it could do as much!