ok, soo, i've built my first corexy printer (sandwich200) and love it. i'd like however to shrink the footprint, and i've come up with a design concept that is a 280x280mm footprint using the standard 214x214mm printbed PCBs... but it relies on "stacking" the components, so you would have (vertically) belt YRod belt, and the XRods would likewise go one *underneath* the YRods, so it would be lower XRod, YRod, upperXRod.
now, the only reason that i am considering this is because after flexing the XRods on the sandwich200 (which is a fusebox derivative) i noticed a *massive* amount of play (shear) was possible on the XRods when there are no belts. now that i've tensioned up the belts, i'm having difficulty shearing the XRods sideways.
and that's what i'd like to check.
QUESTION: is it DEFINITIVELY the case that the BELTS are the reason why CoreXY designs are accurate? let's assume competently-arranged and sourced (i.e. ideal) linear bearings etc. clarification of question (asking in a different way): if i only had *one* X-Rod (let's say it was square instead of round), would the CoreXY belts still give accuracy?
if "yes" then i can go ahead and design a 280x280mm footprint corexy printer, which would be awesome.
now, the only reason that i am considering this is because after flexing the XRods on the sandwich200 (which is a fusebox derivative) i noticed a *massive* amount of play (shear) was possible on the XRods when there are no belts. now that i've tensioned up the belts, i'm having difficulty shearing the XRods sideways.
and that's what i'd like to check.
QUESTION: is it DEFINITIVELY the case that the BELTS are the reason why CoreXY designs are accurate? let's assume competently-arranged and sourced (i.e. ideal) linear bearings etc. clarification of question (asking in a different way): if i only had *one* X-Rod (let's say it was square instead of round), would the CoreXY belts still give accuracy?
if "yes" then i can go ahead and design a 280x280mm footprint corexy printer, which would be awesome.