New to the group but just wanted to share with anyone that’s interested a new K1 series X rail linear rail upgrade that I have been working on for the last few months.
This is all my own work and my design goals were as follows.
My goals were simple:
Remove common VFA fault
Remove ghosting
Make an X rail upgrade kit that works on rooted or non-rooted machines
No impact to X x Y print area dimensions
Make it look close to stock and in keeping with the Creality design and less like an afterthought
No impact to start print scripts for nozzle clean/wipe
Make gantry lighter than stock!
Make XY block pulleys accessible so that if a bearing fails a full strip down is not required
The design is complete and ALL goals were met!
Upgrade uses a MGN9H rail rather than a MGN12H as per other upgrade kits to save weight and maintain full print area, but is reinforced by a carbon box section for additional stiffness. This has resulted in a reduction in gantry weight by 170g which has hugely helped print quality.
The one you shared is a FULL linear rail upgrade which would in theory be the best.
However it comes at a high cost as you need x3 linear rails vs 1 and also potentially unnecessary as testing has shown that a single rail on X is all that’s needed to remove the VFA.
Looking at that upgrade it’s a nice looking, well engineered solution however for me I don’t like an unsupported MGN12H rail, especially on a K1 Max. Goes against everything Ive learned from my engineering career. All be it that the tool head is relatively light and it’s prob ok I still wanted to opt for the MGN9H with supporting rail.
Another point for that mod vs mine is that in this one you need to change the stepper mounts and also the front lead screw mounts, assumingly to maintain build volume. Mine doesn’t need that as it works with the stock Creality design which therefore makes install easier for the masses.
Both are viable options and really it comes down to that level of modification and cost the user wishes to undertake.