3dr spring socket joints i finally got my 3dr converted to use the spring socket joints from andycart's cherry pi 3. They work a little better than the traxxas joints I had. DSC0957.jpg mod_embed_images_loadimage('1c0d2707e97d1c8bfe331ce10e119c56', 'https://reprap.org/forum/addon.php?178,module=embed_images,url=http%3A%2F%2Fwww.imageupload.co.uk%2Fimages%2F2014%2F10%2F26%2FDSC0957.jpg', 'http://www.imageupload.co.uk/images/2014/10/26/DSC0957.jpg', 'https://reprap.org/forum/addon.php?178,module=embed_images,check_scaling=1,url=http%3A%2F%2Fwww.imageupload.co.uk%2Fimages%2F2014%2F10%2F26%2FDSC0957.jpg', '', 424465, 800, 400, 'Loading image ...', false); DSC0959.jpg mod_embed_images_loadimage('ac276727c3ee0d2190cd9fc2d0aba426', 'https://reprap.org/forum/addon.php?178,module=embed_images,url=http%3A%2F%2Fwww.imageupload.co.uk%2Fimages%2F2014%2F10%2F26%2FDSC0959.jpg', 'http://www.imageupload.co.uk/images/2014/10/26/DSC0959.jpg', 'https://reprap.org/forum/addon.php?178,module=embed_images,check_scaling=1,url=http%3A%2F%2Fwww.imageupload.co.uk%2Fimages%2F2014%2F10%2F26%2FDSC0959.jpg', '', 424465, 800, 400, 'Loading image ...', false); DSC0960.jpg mod_embed_images_loadimage('7eeab546fbf4e5769b0cfd695fb52fb0', 'https://reprap.org/forum/addon.php?178,module=embed_images,url=http%3A%2F%2Fwww.imageupload.co.uk%2Fimages%2F2014%2F10%2F26%2FDSC0960.jpg', 'http://www.imageupload.co.uk/images/2014/10/26/DSC0960.jpg', 'https://reprap.org/forum/addon.php?178,module=embed_images,check_scaling=1,url=http%3A%2F%2Fwww.imageupload.co.uk%2Fimages%2F2014%2F10%2F26%2FDSC0960.jpg', '', 424465, 800, 400, 'Loading image ...', false); files : thingiverse https://reprap.org/forum/read.php?178,424465,424465#msg-424465 Sun, 17 May 2026 04:34:19 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?178,424465,426598#msg-426598 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,426598#msg-426598 printed balls wont work because they will never be perfectly spherical.

one more way is you could try normal 9mm ball bearings and glue them to a socket fixed to the cf rod.

ebay]]> ekaggrat Delta Machines Fri, 31 Oct 2014 09:20:12 -0400 https://reprap.org/forum/read.php?178,424465,426585#msg-426585 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,426585#msg-426585
If tolerance of the socket is no problem, the ball should not add much slack ?
It is the spring that cures it ?]]> Replace Delta Machines Fri, 31 Oct 2014 08:22:40 -0400 https://reprap.org/forum/read.php?178,424465,426236#msg-426236 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,426236#msg-426236
balls on ebay ?]]> Replace Delta Machines Thu, 30 Oct 2014 09:46:01 -0400 https://reprap.org/forum/read.php?178,424465,425652#msg-425652 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,425652#msg-425652
the red adapter is actually not needed. My problem was that i had 9mm balls with M4 threads which left a clear hole of 3.5 mm .The cf rod was 4mm and wont fit hence the adapter. If can get threadless balls with 4mm hole u don't need a adapter. Just cut the rod to exact length and insert in the balls.]]> ekaggrat Delta Machines Wed, 29 Oct 2014 04:25:26 -0400 https://reprap.org/forum/read.php?178,424465,425633#msg-425633 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,425633#msg-425633
Can you show a picture of the parts in detail, before assembled ?

So the rod goes into the all with the red adapter in between, but how ?

Thomas]]> Replace Delta Machines Wed, 29 Oct 2014 03:30:02 -0400 https://reprap.org/forum/read.php?178,424465,425171#msg-425171 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,425171#msg-425171
i used 9 mm balls with m4 threads in them . I also tried with plain 9mm balls. the problem is that plain balls are a little hard to align when glueing in place ( with a 6mm dia socket) . If you want to use plain balls use a bigger socket to glue in on the rods.

also i would like to look at your print quality before and after the mod. I think there needs to be a post to compare prints from different machines at speeds higher than 80mm/s. that will give a idea of the true capabilities of the system, And prints of mechanical parts with straight walls and not a pink panther woman.

Right now i still get some minor banding in my prints at high speeds ( 80mm/s fill and 60mm/s perimeter ). I dont know if it is normal or if my bearings or rods are sloppy. I cant tell as there is nothing to compare it with.]]> ekaggrat Delta Machines Mon, 27 Oct 2014 22:47:04 -0400 https://reprap.org/forum/read.php?178,424465,425128#msg-425128 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,425128#msg-425128
And hilarious: I just finished re-designing the effector for my Cherry Pi III this weekend. Started from scratch in OpenSCAD, and I see some striking similarities to yours!

http://www.thingiverse.com/thing:518398

I designed mine with the intention of swapping 10mm ball bearings out for the magnets. Is that what you did, or did you get the pre-drilled 8mm ones?

And I'm glad to hear your report that it works. It was hard for me to bring myself to tear my functioning printer apart.

I'm about 70% of the way finished with my retro-fit.]]> maso Delta Machines Mon, 27 Oct 2014 19:01:58 -0400 https://reprap.org/forum/read.php?178,424465,424739#msg-424739 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,424739#msg-424739 AndyCart Delta Machines Mon, 27 Oct 2014 02:01:31 -0400 https://reprap.org/forum/read.php?178,424465,424710#msg-424710 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,424710#msg-424710
The simplicity is just amazing. Only time will tell how long they last. The reason i converted to this was that the trarrax joints had some backlash in them which when tension-ed with springs made them unequal. This made the micro platform rock side to side. Interestingly though between the trarrax joints and this system i didn't see much change in print quality. The biggest difference it made was that i was getting unequal x and y dimensions ( 0.3 mm difference in a 20mm cube ) due to the backlash , which is now gone...]]> ekaggrat Delta Machines Sun, 26 Oct 2014 22:26:42 -0400 https://reprap.org/forum/read.php?178,424465,424487#msg-424487 Re: 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,424487#msg-424487
Quote
ekaggrat
i finally got my 3dr converted to use the spring socket joints from andycart's cherry pi 3. They work a little better than the traxxas joints I had.



Nice work !!!!!!!!!!!! Expect a lot more people to change to this setup!
]]> Xabbax Delta Machines Sun, 26 Oct 2014 11:42:42 -0400 https://reprap.org/forum/read.php?178,424465,424465#msg-424465 3dr spring socket joints https://reprap.org/forum/read.php?178,424465,424465#msg-424465






files :

thingiverse
]]> ekaggrat Delta Machines Sun, 26 Oct 2014 09:48:59 -0400