Upgraded arms for the large delta printer

My large delta printer has been working quite well since the last round of upgrades, but two issues have been bugging me. First, although spiral vase prints were excellent with perfect layer registration, some other prints showed a small misalignment between some of the layers. Second, when I measured the trigger height of the IR sensor at each probe point, I found that the trigger height close to the Z tower was about 0.25mm higher than in most other places. I corrected for this using the H parameter for the probe points affected on the corresponding G30 commands in the bed.g file, so it didn’t affect the delta calibration. But it shouldn’t have been necessary.

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More upgrades to the large Delta 3D printer

In this post I describe three further upgrades: 24V power, moving the electronics under the bed, and the Robotdigg aluminium effector.

Upgrading the large delta printer

In my previous entry I described my large Kossel-derivative delta printer. Since building it, I have upgraded it in a number of ways, which I will now describe.

Building a large delta 3D printer

In this entry I describe how I built a largish delta printer based on the Kossel design. It started up as an upgrade to the Mini Kossel that I describe in earlier posts, but now there is very little of the Mini Kossel left in it.

Upgrading the Mini Kossel to Duet Electronics Part 4: the Z probe

In earlier posts in this series, I described how to install and connect Duet electronics on a Mini Kossel, how to install and configure the firmware, and how to calibrate the printer. In this post I cover using a Z probe.

Upgrading the Mini Kossel to Duet Electronics Part 3: Calibration

In the third part of this mini-series, I will cover final commissioning of the Mini Kossel with Duet electronics.

Upgrading the Mini Kossel to Duet Electronics Part 2: Software and Commissioning

In Part 1 of this two-part series, I covered the hardware changes needed to use Duet electronics with the Mini Kossel in place of Arduino/RAMPS electronics. In this second part, I will cover installing the software and the first stages of commissioning the printer. Part 3 will cover the remainder of the commissioning process, including calibration.