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EVA-3D / easy-mod

A XY mod for the Rat Rig V-core Pro
https://easy-mod.eva-3d.page/
GNU General Public License v3.0
30 stars 5 forks source link

Easy-mod on current Linear Rail version of RatRig printer #2

Open flajzi opened 4 years ago

flajzi commented 4 years ago

Is actual Easy-Mod valid on current model of Rat Rig V-core Pro printer? I built latest Rat Rig V-Core Pro and I would like adapt EVA platform, but XY joiners from Easy-Mod are fitted to rail under frame (current V-Core Pro has rails (+XY motors) on frame) nad also you need shorter Z rail. Do you plan to adjust Easy-mod to current mount of X rail to Y rail (mount on top of XY joiner)?

pkucmus commented 4 years ago

It is designed for the pro but to mount it you need 2x Y 2020 mounted below the rails and shorter 2020 for Z rails, picture of my V-core Pro for reference.

IMG_20200604_163055

flajzi commented 4 years ago

Thank you for your quick answer. Is there any advantage (somehow which I can't see) in compare with original mounting where Y rail is on top of 2040 frame? IMG_2889

Turricann commented 4 years ago

I would have to agree on using a top mounted adapter for this mod to mount the linear rails on top there are also other benefits like the rails will run smoother mounted on the top on top, making an enclosure is simpler and would make this a true easy mod. I know i would start using it if it was designed that way.

my current build state.

20200630_231041

pkucmus commented 4 years ago

The main issue with a top mount is that there is no way to reuse the XY plates. You can't (with ease) just flip it around as the plate to joiner M5 screws would interfere with the MGN rail. One would need to use plastic where the plates now are - which is fine but would probably a different mod/project. I there's too much going around EVA right now for me to tackle this.

pkucmus commented 4 years ago

Also radial and reverse radial load ratings are the same for an MGN rail - gothic arch contact design. Those can differ on rails for special/other applications but MGN standard has gothic arch.

Turricann commented 4 years ago

I wouldn't mind fabricating a replacement bracket out of metal after the plastic concept has been proved. I agree on the concept of the rails i just find they run smoother while loaded however I haven't really ran them upside down for a long period.

pkucmus commented 4 years ago

you could always try flipping the easy mod XY gantry upside down and placing a shorter MGN rail on top - that should work even if only as a proof of concept.