Nearing end of 2.4 r2 build(FYSETC kit) and I still have no idea what this part is for?

[gusty narwhal]

So I'm basically at the point of powering up and setting up software/firmware, but I still have this thing metal frame piece. Anyone know what this is used for? It's nowhere in the stock Voron manual, and no mention of it anywhere in the FYSETC kit. It's made of aluminum, I'm assuming(non magnetic) and powder coated black, around 16 inches long.

[ashen crane]

It's an ultra-light x axis. Most of them are garbage and should not be used so I hope they also included a standard extrusion for that.

Oh you're powering it up already which means they did include the standard X beam. Great!

[gusty narwhal]

Thanks for the quick response. Yeah, I followed the official manual and all the standard extrusions were in the kit. Good to know!

[tight grail]

standard version also part of the kit, btw can you give some more details whats wrong with it? might i do not have enough experience (only used like 300hours), but till now did not find anything bad about it (or i did not notice it yet). my only issue was to slightly modify my build, because y endstop switch was positioned to a hole 😄

[ashen crane]

Typically resonance measurement recommended max accels decrease with the skeletonized X beam. I've often heard that ringing gets worse for a given accel when that is used.

It's especially important that an X beam can maintain rigidity against torsional loads when the toolhead does not have the mass balanced above and below the center of the x carriage.

[tight grail]

well might thats why i do not recognise any problem with it, normally i print "slowly", because of old/cheap filaments; anyway resonance tests recommends around 9-11k accel (cnc tap and stealthburner, so there is a lot of weight)

[ashen crane]

What size printer? Is that in X or Y? Either way it's great that it's working out for you. Maybe they have started making them more rigid.