Month: June 2017

After a week of assembly, I have the first print off my (already modded) Tevo Tarantula… and also a question about getting it to print in the center of the build plate.

http://ift.tt/2sMWVXU http://ift.tt/2t6nUwC

[Xpost from r/ebay] Sold a 3D Printed coin sorter. Customer opened a return request citing ‘bad quality, doesn’t work.’ customer-supplied pic shows otherwise. Should I concede?

Pics supposedly showing the problem:http://ift.tt/2sNZp82 wording:The quality is really bad – Unable to count exactly coin amount – Printed line not alignment – Top piece are loosen. – The coin keep falling out – 1 of the space is not for Canadian dollar ( Coin skipped )Sounds like made-up BS and buyer’s remorse to me, as I’ve sold about ten others with no complaints. Thoughts?Should I just accept the return, or decline? http://ift.tt/2seNV0H

Segmentation and print surface quality

After some discussion in one of my 3D printing groups about the differences between 8-bit and 32-bit controllers we created a squashed hemisphere model and tessellated it to varying degrees, starting at 1,242 and ending at 772,272 polygons. This is designed to test segmented versus unsegmented delta firmware. A segmentless delta should, in theory, have visible surface quality changes between each model. In practice, the differences in high-poly models are very subtle. I’d love to see prints of these same models on 8 bit and Smoothieboard deltas.I printed these models on my D300VS, which ships with the Duet Wifi board. The Duet does segmentless movement for curves. These models were printed in one job at 60mm/s in red Hatchbox PLA at 205 degrees with .2 mm layers.I’ve tried to photograph them to bring out the surface finish; the differences between 120k and 772k polygons is very subtle, but I believe I have captured it.Once these go past 10k polygons the polygons are most easily seen in the highlights. The 14k model has subtle striations. 120k and 772k are only different on the narrow edge as that’s the only place the tessellation is different. I photographed them from approximately the same angle as the others for consistency, then did a side-by-side of the two prints. I can see a subtle sawtooth pattern in the highlight of the left, which is the only place the polygons are different between the models.1,2423,79014648120,218772,272120k versus 772kModel WireframeSource Model Zip – Zip file with the models used.Imgur Mirror http://ift.tt/2rMaGaP

update on broken printer

im the guy from this thread. for those of you who care, i got my replacement within 2 days and most of the problems are gone, the plate under the bed is fine, most of the scratches are gone (only a few remain), the only thing is that the feet are still unlevel.i contacted amazon again about the feet and they refunded me $80 and let me keep the printer. http://ift.tt/2rMbjB6