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View Full Version : Gravograph M20 'bouncing' at home position



Lou Anderson
11-05-2012, 1:04 PM
I have a gravograph m20 machine that has an issue when returning to home. During the homing procedure when the spindle returns to home occasionally it will 'bounce' on the left limit switch anywhere between 3-5 times. The problem this creates is if we need to engrave something twice - when it does this odd 'bouncing' off the home position it ends up losing it's reference point. So if we do a second pass on an engraved item the second pass will be a millimeter or so off - ruining the piece.

The machine is at gravograph right now although they are unable to reproduce the problem. The firmware on the machine is already up to date. I'm thinking of replacing the X limit switch when it gets back. Is there anything else I could possibly do to eliminate this? We've been using multiple M20's for years and have never seen this issue.