I'm designing V4 of my delta and while I was researching 7075 alum properties I suddenly realized I could probably afford to use CF instead. Search didn't find anything useful. Does anybody have experience building non-rod structures with CF? I know it can have serious directional strength characteristics but of course I would be using some kind of laminate. https://reprap.org/forum/read.php?4,843842,843842#msg-843842 Fri, 09 Oct 2026 19:44:10 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,843842,843994#msg-843994 https://reprap.org/forum/read.php?4,843842,843994#msg-843994 shadowphile Reprappers Tue, 08 Jan 2019 19:38:43 -0500 https://reprap.org/forum/read.php?4,843842,843992#msg-843992 https://reprap.org/forum/read.php?4,843842,843992#msg-843992 VDX Reprappers Tue, 08 Jan 2019 19:32:24 -0500 https://reprap.org/forum/read.php?4,843842,843986#msg-843986 https://reprap.org/forum/read.php?4,843842,843986#msg-843986 @NitroFreak: I have not had to think much about which metals will vibrate longer than others except for deliberately resonant devices with high 'Q'. In this case, I would think a simple plate with all the attachments would only vibrate at very high rates and small amplitudes. The belts would absorb lower frequency oscillations. But would a flat piece of laminate stand up to the forces of high-speed movement of an effector? (example material carbon fiber plating. It's multiple ply (I think) so it should be strong in all directions, right?]]> shadowphile Reprappers Tue, 08 Jan 2019 18:35:30 -0500 https://reprap.org/forum/read.php?4,843842,843845#msg-843845 https://reprap.org/forum/read.php?4,843842,843845#msg-843845 Carbon fiber composites hav great stiffness and great strength to weight ratio but sadly fare not so well when tasked with absorbing vibration, particularly because of the missing weight.
The best metal for the job would be magnesium. It has some crazy vibration absorption properties, and is even very light.]]> NitroFreak Reprappers Mon, 07 Jan 2019 21:12:48 -0500 https://reprap.org/forum/read.php?4,843842,843843#msg-843843 https://reprap.org/forum/read.php?4,843842,843843#msg-843843
A common methode is to mill or carve the inner form from foam and laminate it ... another is to 3D-print two halfs of the negative form, laminate, cut and glue them together - then you can "embedd" wires or structurals elements inside ...]]> VDX Reprappers Mon, 07 Jan 2019 20:17:56 -0500 https://reprap.org/forum/read.php?4,843842,843842#msg-843842 https://reprap.org/forum/read.php?4,843842,843842#msg-843842 Search didn't find anything useful.
Does anybody have experience building non-rod structures with CF? I know it can have serious directional strength characteristics but of course I would be using some kind of laminate.]]> shadowphile Reprappers Mon, 07 Jan 2019 20:04:49 -0500