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Ultimaker Community of 3D Printing Experts

cosmology

Dormant
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  1. Makerbot My printer which cost 5,227 usd True.. Good point, I forgot about the new Gen of makerbot. I had written them off after the smart extruder fiasco. Is it reliable? Does it use the same very inexpensive motion components as, apparently, all other inexpensive machines use?
  2. Uhm Yes.. I dont have a deep set hatred for 'cheap 3D printers' - I just have watched the market develop into a utter crapfest of lowest common denominator behavior, typified by patenting open source ideas, providing subpar equipment, breaking cardinal rules of open source by creating forks only for branding purposes, and so on. After I ranted above, I did think about the fact UM releases ALL of their materials open source, even for their flagship products. Of course, they have to in most cases, given the licenses of the projects they use. But they do a good version of commercializing open
  3. UM2 = $2500. It contains roughly $300 of materials and parts. First off, 1) The entire 3D printing market DOES border on a scam - most of the companies involved STOLE open source projects and contribute nothing back to them at all. Meanwhile "3d printers dont just work" is a foolish mantra. What printer costs a lot more than $2500 UM2 without going into the $25-$50K range? Is there any? UM2 was supposed to be the one that 'actually works' The failing Z bearings in my UM2 likely cost less than $4 each.... I am sitting here considering replacing them with the cheapest legit linear bearings
  4. There are two ways to ship a product: 1) With easily identified quality control issues 2) Working The bearings are not 'simply making a sound'. I spend all day designing equipment and tools - I know what linear motion components are like at different price points. Our machine came with obvious rejects.. They literally seize up completely when changing direction, they make grinding sounds, their finish looks suspect at best. A 3D printer that comes with $4 linear bearings, that are failing new.... That is not what I expect for $2500. And yes, the cost absolutely does matter.
  5. If it has the same problem our UM2 has (almost new machine) - the Z axis bearings bind\stick - the grinding sound would be the motor struggling and failing to step.
  6. This isnt a remotely unique problem - it appears to basically be a common experience for UM2 owners... Poor saps that we are.. Expecting the massive increase in cost to have better quality was foolish... Deep down I knew this would happen, of course... The entire 'consumer' 3D printer market borders on a scam... Bulk purchasing QC-failed chinese parts and then rebranding open source hardware is.... One way to try and make a buck, I guess...
  7. Hello! Recently when faced with buying a 3D printer for the busy astrophysics lab I work in, I recommended a UM2 because they are supposed to 'just work'. Our printer arrived making weird grinding sounds when the table moved downward, but not upward. After some good and some bad prints, the table began violently shuddering on downward motions, and print quality became terrible. I spend hours carefully taking the machine apart, put the bearings into an ultrasonic cleaner, and still the machine makes grinding sounds. It has always made grinding sounds, it has always had layer issues. Wh
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