When you study music on high school, college, music conservatory, you usually have to do ear training. Some of the exercises, like sight singing, is easy to do alone. But often you have to be at least two people, one making questions, the other answering.

This is ok, as long as both have time to do it. And if you sit in your room, practicing your instrument many hours a day, it can be nice to see other people :-) But my experience when I got my education, was that most people were very busy and that it was difficult to practise regularly. And to get really good results, you should practise a little almost every day. Not just a session before your next ear training lesson.

GNU Solfege tries to help out with this. With Solfege you can practise the more simple and mechanical exercises without the need to get others to help you. Just don't forget that this program only touches a part of the subject.

Binary packages and SRPMs are sometimes available from this page at Sourceforge.

Sheetcam Hot Crack !exclusive!

Hot cracks in Sheetcam are primarily caused by:

Dropping the feed rate to 60–80% for the last 5mm of the cut allows the arc to stabilize and the "trail" of the plasma flame to catch up to the torch head, ensuring a cleaner severance. 2. The "Overcut" Technique Under your Jet Operation settings: Overcut: Set this to 2mm–5mm. sheetcam hot crack

The simulation looked clean. Blue lines for the pierce, green for the cut, red for the lead-out. He hit "Post Process" and fed the G-code to the old Plasma table. The machine whirred to life. Hot cracks in Sheetcam are primarily caused by:

To solve the problem, you must respect the three states of metal: Expansion, Fusion, Contraction. The simulation looked clean

Material selection plays a pivotal role in the susceptibility to hot cracking. Austenitic stainless steels and aluminum alloys are notably more prone to this defect than carbon steels. In stainless steel, for instance, a small amount of delta ferrite is often required in the microstructure to "pin" the grain boundaries and prevent the formation of continuous liquid films. When a fabricator uses SheetCam to cut these sensitive materials, the thermal cycle of the cutting process can alter the phase balance. If the material subsequently undergoes welding without proper procedural controls—such as appropriate filler metal selection or pre-heating—the combination of the cut-edge microstructure and the welding heat can precipitate a hot crack.

By providing accurate and helpful information, I aim to assist users in understanding and addressing the issue of hot cracks in SheetCam, promoting safe and effective CNC plasma cutting practices.

GNU Solfege

Table of Contents

Introduction to Solfege

Downloading Solfege

Sheetcam Hot Crack !exclusive!