RailCore II corexy
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Thanks for the update, I am really looking forward to MRRF and will be sure to stop by!
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I'm psyched you'll be at MRRF, looking forward to chatting!
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Oh, and I'm a local. So if you need any info, etc, hit me up!
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The first revision of the RailCore IIZL assembly guide (250mm, with z-leveling) is done, and available here: https://docs.google.com/document/d/1OoXfw7aXMz0NzAxkdwuChC0FpunLRyKI02_1vJF52hk/edit#
I'll have the assembly guides for the 300 & 300ZL soon (probably tomorrow)
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Great documentation. I'll be sure to stop by at MRRF.
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Documentation for building the 300mm^3 versions of the RailCore are now available:
RailCore II 300: https://docs.google.com/document/d/1hC_S6MeUwHMQ6U9vivJ6D1Olx1hfcOVcvL2W0NaXD28/edit?usp=sharing
RailCore II 300 ZL: https://docs.google.com/document/d/19FuTYfwqgOkGO8SUScnSuhS_Gx8mJMmXLiPgBfGeJ-s/edit?usp=sharing -
Excellent! Thanks, look forward to catching up at MRRF
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One of my sample prints for MRRF. Testing layer heights. This one is 0.02mm
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Had a great time at MRRF doing prints like the one above (I printed a couple pins, 0.05 first layer, 0.02 for the rest. 413 layers in a print just over 8mm tall) Really enjoyed meeting Tony from duet3d and getting talk with him. He's extremely nice, and super smart. Had great talks with pretty close to everyone I interacted with.
Here's a sample check of my auto-level after bringing my printer home. This is after intentionally spinning the leadscrews to demo auto-leveling all weekend, carrying the printer around, etc. Who needs mesh leveling? lol
(I think I could clean it up a bit more if I took some time to clean the bed, double check nothing shifted with the rails, ran another round of leveling, etc, but this will do)
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Fantastic!
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my google-fu is failing me (i can't find the specs & calculation), how much deflection (droop) do you get on that 12mm linear rail you're using unsupported for the X axis?
edit: actually, it appears you're using it as the Y-axis
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Love your work and I am starting to source parts for one of these now. This will be my third build from the ground up and I am super excited. I have a few questions though.
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Can you recommend a Misumi part number for the linear rails (300ZL version), I would prefer to go through them even though the ones on ebay are cheaper. ( I believe if I want to use Misumi I will have to mod the printed parts in f360 for a different hole pattern if I am understanding their literature correctly)
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Somewhere I saw you had options for aluminium cnc versions of some of the parts like the x carriage and I was wondering if you had a source for those parts.
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How close are you to figuring out how to put a top on it. This is also something I am very interested in figuring out?
Thank You
Jack -
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@jackatom74 @kraegar (In case you missed the questions)
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Greetings,
I'm not Tony, but I am building a RailCore II 300ZL. I'd suggest you take a look at this page, and some of the useful links: https://www.kraegar.com/railcoreii
As to your specific questions:
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I would expect you can get linear rail and carriages from Misumi that will work, but I haven't seen anyone list the parts. There appear to be two common hole patterns available on the carriages. The rails should be of this size: 400mm MGN12H. The carriages should match the hole pattern of this linked carriage: https://www.ebay.com/itm/New-Hiwin-MGN12H-Long-Block-MGN12-Series-12mm-3D-Printer/172548110293
These have a 20x20mm pattern. -
The aluminum bits will come from 713maker.com. They are working on their web site.
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They have started initial designs for a top.
John
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Thank You John, for the response, I have seen the page (been doing a lot of research. The misumi pattern is 15mm by 20mm, but I have the fusion 360 drawing so I will just mod them if I go forward.
How is your build going have you hit any hiccups?
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@jackatom74 said in RailCore II corexy:
How is your build going have you hit any hiccups?
I'm not far enough along to have any issues yet. I'm just tapping extrusions.
John
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Ack, sorry! I should have checked this more often, I missed the questions.
Sorry - I don't know the misumi part # for the rails that would be the equivalent of a MGN12H. I know somem people have used Hiwins though.
For the aluminum parts, contact 713maker.com - they make the beds, idler mounts, stepper mounts. Currently you have to email them, but they'll have a new website up any day now with a page for ordering parts.
- Steve did the model for the top - I have the CAD and am working on the CAM for the top. I need to cut it and ship to Steve so he can test it.
Here's a preview:
https://imgur.com/djDrUAFWe did have an update yesterday to the BOM - we're recommending a brand name of the power switch, as someone's melted. (As always, when wiring power, do your own research, trust no one, be careful!)
(Thanks for answering questions in my absence, John!)
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One additional note - the top being on it will require the aluminum idler mounts / shoulder bolts so the belts are moved outside the top of the left side. We'd tried using printed parts, but just couldn't print anything rigid enough that would last more than a day or so before the bolts started leaning. (honestly, the idler mounts & shoulder bolts improve things so much everyone should use them, you can get good prints using printed parts for a while, but eventually every design we came up with deforms from the stress of the belt tension)
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Thank you @kraegar for the response, if I order the aluminium parts from 123maker, is the plan for their design to stay the same after adding the top. My plan is to start on the 300ZL but Don't want to pay for the aluminium if the design is going to change.
Does anyone have a online link to someone selling true HOW IN rails?
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All of the aluminum parts are designed with putting the top on it in mind.
I'm not sure of a good online supplier of hiwin. I've not gotten them myself as they're a bit pricey for me.
