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Lab talk, the good, the bad, and the ugly
Dental-CAD
CAD designed splints
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<blockquote data-quote="DMC" data-source="post: 131452" data-attributes="member: 430"><p>You don't need to explain how to measure something to me. I would never just go by looks, although anyone can see the difference between 3dsystems ProJet and an Objet. It is Night and Day!</p><p></p><p>I sent my 3dsystems models to 3M.....they ran metrology on it and sent me back the results.</p><p></p><p>+/- Twenty Something (?) Microns..... I was then approved to 3d print Lava COS models. (Four or <img src="/forums/images/smilies/test/five.gif" class="smilie" loading="lazy" alt="Five" title="Five Five" data-shortname="Five" /> years ago) First in the USA to do so!</p><p></p><p>It was better than the Objet that they later tested. So I am not just guessing Terry. That's not how I post.</p><p></p><p>I think Andrea was in my lab for a few days already? I have had a couple Single axis scanners before, and never again will I.</p><p></p><p>Your scanhead is not what I thought it was.....Thanks for posting!</p><p></p><p>Maybe it does indeed have decent data capture and not too many voids?</p><p></p><p>Why really knows since it auto-fills the holes?? LOL</p><p></p><p>I too can close a hole with various Industrial CAD software and have the software consider the adjacent geomerty and "guess" to what is missing.</p><p></p><p>At first glance, it seems the scanner captured all data, but this is not the case!</p><p></p><p>You're posts are too long.....explaining the obvious again Terry.</p><p></p><p>Multi-Jet printers have fixed holes that the material comes out of. There is no calibration.</p><p></p><p>What are you talking about?? Your Mitsubishi printhead cannot be changed. It is, what it is.....</p><p></p><p>All you can do is expand the original stl file in Three axis across the entire print plate to compensate for shrinkage of the material as it cures. Is this what you call calibration?</p><p></p><p>Laser curing of plastics have been around since 1987! I would not exactly call that new technology.</p><p></p><p>Chuck Hall did it first back then...</p><p></p><p>Those printers do need calibration of the laser scanning mechnism....Often parts are skewed at the edges of the build plate. Not so with your objet, or my 3d systems Multi-Jet printer.</p></blockquote><p></p>
[QUOTE="DMC, post: 131452, member: 430"] You don't need to explain how to measure something to me. I would never just go by looks, although anyone can see the difference between 3dsystems ProJet and an Objet. It is Night and Day! I sent my 3dsystems models to 3M.....they ran metrology on it and sent me back the results. +/- Twenty Something (?) Microns..... I was then approved to 3d print Lava COS models. (Four or Five years ago) First in the USA to do so! It was better than the Objet that they later tested. So I am not just guessing Terry. That's not how I post. I think Andrea was in my lab for a few days already? I have had a couple Single axis scanners before, and never again will I. Your scanhead is not what I thought it was.....Thanks for posting! Maybe it does indeed have decent data capture and not too many voids? Why really knows since it auto-fills the holes?? LOL I too can close a hole with various Industrial CAD software and have the software consider the adjacent geomerty and "guess" to what is missing. At first glance, it seems the scanner captured all data, but this is not the case! You're posts are too long.....explaining the obvious again Terry. Multi-Jet printers have fixed holes that the material comes out of. There is no calibration. What are you talking about?? Your Mitsubishi printhead cannot be changed. It is, what it is..... All you can do is expand the original stl file in Three axis across the entire print plate to compensate for shrinkage of the material as it cures. Is this what you call calibration? Laser curing of plastics have been around since 1987! I would not exactly call that new technology. Chuck Hall did it first back then... Those printers do need calibration of the laser scanning mechnism....Often parts are skewed at the edges of the build plate. Not so with your objet, or my 3d systems Multi-Jet printer. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
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CAD designed splints
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