RailCore II corexy

jackatom74

@kraegar I ordered them from rose works ty for the info, I did find a Misumi rail that will work I think. I will share the p/n at a later date if I am successful.

kraegar

There's been a good bit of discussion in the Facebook group on misumi and hiwin rails. I just haven't had time to keep up on the results of what people have done lately!

(Darn real jobs and life getting in the way of my printing time!)

kraegar

Been a while since I've updated, but today has a big one... literally. Finished the model for the 300x300x600 RailCore (Calling it a ZLT for "tall")

alt text

The fusion 360 model is here: https://a360.co/2w7PjT6

Details at kraegar.com and the Facbook group

ayudtee

@kraegar I do not see bearing blocks on the lead screws. Have they been omitted in this design, or just not shown on the render? I am planning to build the 300ZL and wondered if the bearing blocks are really necessary?

kraegar

No bearing blocks on the "ZL" builds. You don't want to overconstrain the tops of the leadscrews - the idea is to keep the leadscrews doing only Z movement, and let the linear rail constrain X/Y.

We actually have some aluminum Z yokes coming out soon that even further isolate any wobble in the leadscrew from affecting prints.

(This taller version does have a bearing block just above the steppers for Z, to help keep these really long leadscrews constrained some)

ayudtee

Thanks for the clarification. I did not realize that the fusion 360 link on the 300ZL BOM went to the 300 and not to the 300ZL. Thanks very much for the impressive documentation that you've provided. Really looking forward to this build.

kraegar

Oh, shoot, I'll correct that. Sorry!

kraegar

Fixed that link, thank you!

kraegar

We're "officially" considering the Standard builds deprecated, in favor of the ZL models (250ZL, 300ZL, 300ZLT). I've marked the Build Guides & BOM's to reflect that, as well as updated the table on kraegar.com. I'll be updating thingiverse accordingly and re-organizing the files in line with this change.

The standard builds will remain published (fusion files, guides, BOM) as they are now, but I won't be making a continued effort to keep the links and information in them up to date.

This is being done because the vast majority of the interest in the RailCore is now geared towards the ZL, and it will save a lot of time to just focus on the documentation and BOM's for those models, as well as to plan future updates with only needing to worry about those designs.

kraegar

A new aftermarket option is now available for the RailCore - Aluminum Z-Yokes from Mandala Rose Works. Even a badly bent leadscrew can't transmit wobble into prints with these.

http://www.mandalaroseworks.com/product/railcore

Z-Yokes

T3P3Tony

The Railcore just keeps getting better, excellent work @kraegar !

kraegar

Thanks!

We're trying to keep a balance where things are "optional", but still push the quality forward. It's been fun.

I posted a prototype I call the "Halo". I cut it out of HDPE to test fit, then I'll try it out of aluminum. Likely massive overkill and no improvement in quality, but looks neat.

Halo

Phaedrux

Looks similar to the E3D tool changer with the solid tool plate top.

I'm seriously considering the RailCore II for my next printer. Only the Voron 2 looks like a contender, but it's not really officially released yet.

Great work.

I don't suppose you could point me towards more example prints or build logs?

kraegar

Here's my print gallery: https://imgur.com/a/QNLli

Here's a build log from someone that's in process for theirs: https://imgur.com/a/edVEg4K

The most active places to find us and see different builds are on Facebook: https://www.facebook.com/groups/RailCore/

Or #RailCore on Freenode IRC

We've also started a wiki at railcore.org - it's early and a work in progress.

As for the toolchanger, we full intent to support it if at all possible once it's available.

kraegar

I’m pleased to be able to make a major announcement!

KITS ARE ON THE WAY!

We’re partnering up with Project R3d to make RailCore II kits a thing.

What this means for the Open Source RailCore:
The RailCore will remain Open Source. The BOM, Build Guide, and fusion models will remain published as they are, and will be updated as we make changes. Nothing changes at all there, all future adding and improvements will be compatible with existing RailCores. The option of self-source building will remain available.

So what are the kits?
To the largest extent possible Project R3d intends to offer a “True to the BOM” 300ZL kit - the final components aren’t 100% done, and some minor changes will be necessary, but overall it will be the same RailCore you can get today, just with “one click shopping”.

What to expect in the kit:
Duet & Duex5 electronics will be included.
A wiring harness to simplify wiring to the Y carriage. Cables cut to length and pre-crimped.
Aluminum parts including the Bed, Stepper Mounts, Idler Plates, and X-carriages. (Still sourced from 713maker & Mandala whenever possible)
Various options for hotnends including E3dv6, Mosquito, or no hotend. (so you can “bring your own”)
Options for an extruder or a Bondtech BMG, or no extruder (so you can “bring your own”)
The bulk of the parts will look much as they do today - right off the BOM, and the printed parts done in Atomic filament (CF PETG for the structural parts).
Pricing is expected to fall between $1300 - $1700, and has not been finalized.
The timeframe for kits has not been finalized, but we're hoping within the next 1 - 2 months for the initial batch.
Project R3d will provide hardware support, J. Steve White & myself will continue to provide build support & continue with R&D to keep making the RailCore better. 713Maker & Mandala Roseworks will continue to be partners, without them we wouldn't be as far as we are.

Next steps are putting together a forum (we’ll move off of SeeMeCNC’s) to offer support & info (we’ll keep the Facebook group alive too) and work on touching up the documentation. The initial batch of 10 kits will be coming in the next few weeks, and will be used to test out the process, catch any issues, etc.

We’re looking for feedback from the community - what do you want in a kit? What questions do you have?

We’re looking forward to the partnership with Project R3d, and to see the RailCore II be made accessible to a wider audience!

Tony Akens
J. Steve White
Joe Podgorski - Project R3d

T3P3Tony

@kraegar great work! I was impressed with both the Railcore and Project-Red's machines I saw at MRRF and I know you have continued to improve them!

nhof

Can't wait to see these kits available. I have looked over Project R3d printers and was liked the build quality so I expect the kits will be excellent. Good people too.

kraegar

Thanks @T3P3Tony! Looking forward to the "easier shopping" aspect of the kit for sure.

@nhof Yeah - their printers were really nice. We're already trading design ideas back and forth, too. Initially the kits will mostly be a 'parts bundle' of the BOM parts, but over time I expect it to offer some real advantages to make it easier to build (wiring harness, pre-tapped extrusions, labeled parts, etc)

projectR3D

The Kit Pre-orders for the first batch of are live! Reserve your spot in line! https://www.projectr3d.com/products/railcore-ii-300zl-full-kit-pre-order

The first run will require you to tap your extrusion, we will be building the jigs to utilize our power taps in the future. As the RailCore Team continues to improve the printers we will work with the to provide what we can in the kits. Let us know what you want to see and if you have any questions let us know!
Info@projectr3d.com
@Pro_r3d on Twitter

PlasticMetal

What's the status of the kits? Has the first batch shipped yet?

I'm hoping by the 2nd or 3rd batch to have the cash available to purchase one. After self-sourcing my delta, and the considerable extra time and cash outlay that's been, I'm ready for another kit.