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Topics - BigAlienRobot

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Trouble Shooting / Incomplete shapes
« on: April 06, 2018, 09:58:24 PM »
I'm running tests on my new engraver (my first!) and I'm getting shapes that don't close. (See attached illustration)
Typically a 3 to 10 mm gap that occurs between the start and finish of the shape.
It's a 2.5W laser.
Controller is one of those laseraxe clone types (also attached photo) that is running the default 1.1e grbl flashed from T2Laser.

Strangely, the gaps seem somewhat smaller but still there using a grbl 0.9 firmware.

Anyone have any idea if this may be a belt issue or perhaps belt + settings?
Gantry seems square, motion is good, belts feel adequately tensioned but I'm new to this so I'm not certain.
My only other experience is with threaded rod motion on a cnc machine I built so belt tensioning voodoo is new to me.

Thanks in advance for any input!


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