Oddly shaped holes?
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@arhi I have no doubt that they can be made to work, especially if you follow the manufacturer's recommended methods of using them, which few people building 3D printers do.
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@mrehorstdmd The dozen or so patents I have are all for stuff others tried and found impossible to do.
@Phaedrux +1
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@gtj0 They don't hand out patents for doing the same thing everyone else has done.
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@mrehorstdmd said in Oddly shaped holes?:
@gtj0 They don't hand out patents for doing the same thing everyone else has done.
No but people who try and fail don't usually apply for a patent.
All I'm saying is that there can be value in trying something that others have failed at. Maybe it's just personal growth or maybe the 1001th person will be smarter than the previous 1000. Or maybe it's just wasted time and money. Who knows?Anyway I think we've probably derailed this thread enough. Sorry guys.
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@mrehorstdmd In my case, I watched a guy on youtube who had great success with the CF rods and IGUS bushings, so that's why I went with it. That was the only time I had seen it done.
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@Surgikill Well, that's the problem, isn't it? People post a snap-shot of their work at one point in time. Maybe after using it a while, they discover that it wears out quickly, or maybe they left out some details in what they did, so their result isn't reproducible. Details matter, but details are boring, so they are often left out. Getting something to work long enough to shoot a video and getting it to work for 5 years are two different problems. Few go back to show if something went wrong and what went wrong or why.
If you look at the printers people build from BOMs and plans posted around the web, you'll see a lot of variation in the final printer even though people built from the same plans/BOM. People make substitutions when they can't locate a specific part, or design changes when think they have a better way to do something, or their printed part quality doesn't match the original, or their assembly technique was different/sloppy, so everyone's Voron (just to choose a popular design) looks different from everyone elses, and some of them work and some don't. Details matter, especially in precision mechanisms like 3D printers.
CF rods and tubes aren't generally made for use as linear guides. The manufacturing techniques used to produce them don't generally result in precision surfaces or accurate shape or diameter.
What is the reason to substitute CF rods/tubes and plastic bushings for proper linear guides in a 3D printer?
What is the reason to substitute CF rod/tubes for the guide rails that the plastic bushings are specifically made to work with?
What are the chances that combining some random CF rod/tube, not made for precision linear guidance, with some random plastic bushing, will result in the precision linear motion needed in a 3D printer?
