GrblGru: Free CAM program with 3D simulation for mills and lathes

In today’s video, I would like to introduce you to a new feature in my program.
It involves creating radii and chamfers with a standard cylindrical milling cutter.
There are various reasons for doing this. For example, if you don’t have a suitable cutter with a specific angle or radius, or… if, like me, you’re simply too lazy to clamp in another cutter and determine the length. Instead, the cylindrical milling cutter is simply sent on a few more rounds, and then the corners are smoothed with sandpaper.
The whole thing works with any path shapes. For example, I used the feature to build a handle for a small saw to remove retaining tabs.

Have fun with it!

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Thank you please keep up the good work.

Hi everyone,

I’ve been working almost exclusively on the FoamCutter project lately.
After some initial failures, I think I’m now in a good position to present it to you.

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Well done. It’s obvious you put a lot of effort into perfecting this.

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Hello everyone,

I would like to briefly inform you about the new features of the current beta version V6.25 for the Foam Cutter. These relate to the various options for cutting the Styrofoam block into shape. Details on the commands used can be found in the PDF document “Styrofoam Cutter” on my website.

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Lately, I’ve been working on building wings for model airplanes.
This gave me the idea of constructing a sanding block from the very sturdy Styrodur used in this process. Unfortunately, the video is only available in German, but the process is easy to understand even without the text.
I’m planning to make a second video in which I’ll go into more detail about programming the individual machining processes.

Hello everyone,
I have gathered all the files for the sanding block project once again to make them available to you. In the video, I go into more detail about programming the processes with GrblGru.
For example, I describe how you can save yourself a lot of work when creating the drawing by choosing the right layers. It also shows how to hide and move individual paths of a project afterwards. This is very useful, for example, if you realize at some point after starting the program that a clamping claw is in the way after all.Finally, I also show a wooden sanding block and a variant with cladding and possibly engraving. (Gift idea!)

However, the DXF files can certainly also be used for other CAM systems.

SchleifKlotz_Files.zip (416.4 KB)

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Hello everyone,

I have uploaded a new version, V6.28, to my website.
This now makes it possible to cut both wings from a single block.
You can choose whether the wings should be positioned next to each other or one above the other.
In addition to DXF files, GrblGru can also load the familiar .dat files.
In this video, I show you how to load the .dat file and then prepare the standardized files with WingCreator. Finally, I go into more detail about programming the process flow

Have fun with it :slight_smile:

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Hello everyone,

I have created a new beta version V6.31 and uploaded it to my website.
In it, I have tried to simplify the handling of the Wing Creator even further. Now both wings can be created directly here.
In addition, it is now also possible to create negative shapes of the core.

Wishing you all a Merry Christmas

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good point!