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Topics - BigAlienRobot

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Projects / Some of my work
« on: December 11, 2019, 09:12:40 AM »
Here's some of the work I've done lately.
Did lots of experimenting with coloring/staining/leafing/painting my pieces after getting bored with regular "black and white" engravings.
Current favorite is alcohol ink. It's tough to work with but I'm getting the hang of it.

Those rounds are simple home depot laminated pine rounds. The tables are built from regular 2x4s.

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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!

-Chris




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