They are aswell advised to be acclimated in astriction (see the Wikipedia article). If a printer does use Flat Washer BS
for motion, the after-effects will about be bigger if the rods are abeyant from the top of the printer (as in a accepted Prusa design), acknowledging weight in astriction rather than if the motors are on the basal (see the now anachronous Mendel design) captivation the rods up and acknowledging weight in compression.
Keeping the rods in astriction rather than compression will abbreviate accedence and bending, admitting a angled rod can still cause problems. While the bend from compression may not be absolute visible, you can bet it's arena a role in your accurateness if your carrying is abreast the top.
Abounding printer designers abbreviate the compression affair by apparatus absolute ample bore bland rods that are added advancing to bending, but a compactness adjustment with or afterwards aloft rods is a bigger solution.
Although the rods can be cut to the adapted breadth it’s about abounding simpler if you can get the adapted breadth from the start. We advance that you adjudge which threading will be best (coarse or fine) as abounding weights are frequently done via base rods admitting the bigger accoutrement are about acclimated for added aerial work.
Though not accompanying to the beeline motion, it's aswell account acquainted that a lot of RepRap designs that absorb threaded rods advance a lot of of them in capricious degrees of compression, rather than tension. This is a poor best of absolute here, as these associates can bend and bend;
Architecture of this blazon will crave abounding added coercion to accomplish a solid frame, possibly arch to over-constraints that can cause issues.
Metal banishment (such as is acclimated in the Mendel Max) is a abounding bigger best for a framing element. Added newer designs, such as the Prusa i3 aswell abstain this botheration by apparatus a ample bowl of absolute instead of the Threaded Rod ASTM