Sunday, June 12, 2011

Baby steps

I have started the modifications to turn my CNC router into a test bed for my 3d printer design.


I added a platform to the Z axis that will hold the build platform. The resin tray will hang off the edge of the table so I can have the projection from below. For now I just have a piece of Plexiglas as a placeholder for the tray.


Watch the video to see it in action!


video

What you see is Mach3 running a macro. The macro opens a PowerPoint slide show. Then lowers the z axis quickly to the top of the tray then slowly to the bottom so it doesn't splash down into the resin. The macro then shows a slide for the set exposure time alternating with a blank(black) slide while the z axis repositions itself for the next layer. Then the next slide is shown . Lather, rinse, repeat.... When the last slide is done the z axis is raised to its full height so the build tray can be slid out of the holder. The images you see on the screen will be projected up from below the Plexiglas. Of course all the timings will need to be adjusted once I start testing with actual resin.


Next up... I'll add the projector. I just need to get a VGA splitter and a front surface mirror.

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