Recent Blogs
Reversing Grooved Drum: Helix Lead Calculator | FIRGELLI
Calculate axial advance from groove diameter and lead angle. Explore constant-lead geometry, slope and the distinction between helix advance and a complete reversing stroke.
Grooved Heart-Cam: Average Traverse Calculator | FIRGELLI
Compare average traverse speed, cycle time, nominal groove width and a selected stroke fraction. Includes an ideal heart-cam animation and explicit reversal limits.
Needle-Bar Slot Cam: Rotating Groove With Shuttle Dwell
Explore a needle-bar slot cam with an illustrative bottom dwell. Adjust stroke, dwell angle and shaft speed to calculate active angle and dwell duration.
Traverse Motion: Pitch-to-diameter Comparison
Compare entered traverse pitch and material diameter using signed and percentage differences. An entered comparison band does not establish winding tolerance.