the wavy lines on the X/Y axis are called ringing. Caused by lack of rigidity or a slack belt or springiness from mass acceleration. Back when i was doing machining, we get ringing too when doing heavy cuts. Its mostly due to rigidity issues.

I think even with the corexy design it will not eliminate so called ringing or print artifacts caused by fast movement. The long length of GT2 belts used will stretch and compress with acceleration of the heavy extruder motor so ringing will still exist. There might be an optimum acceleration value but going slow is undeniably the best solution but in reality not worth the value. Another solution is to go Bowden but that will introduce even more problems and limit some materials. Take the Ultimaker 2 as an example in solving some of the issues with corexy design.

In case you didn't know the corexy was around a long time and was found in a children drawing toy called etch a sketch which uses wires instead of belts. Historically we should called it etch a sketch but corexy sounds nicer. Also, idk if anyone made a firmware for the corexy yet but I understand each energized steppers will move the end effector (the part that holds the extruder, correct me if I am wrong) diagonally and needs both steppers to move along the cartesian x and y axis.

I have been looking into this design for a long time since I saw someone made a small 3D printer with that setup. He had the platform on the xy axis and the extruder on the z axis. Anyway you should build one and tell us about it. I am building another using particle board/MDF and an incomplete Prusa i3.

i hope this will do it

im printing in 0.2 layer height and according to prusa calculator i can print between 0.19375, 0.2 and 0.20625000000000002
i think my lead screw got 1mm pitch

The lead is the distance that will be traveled in the course of one revolution of the leadscrew. In the case of a single-start screw, the lead is the same as the pitch.

10 threads per inch is a 1/10 inch pitch, which means one rotation takes you 1/10 inches

For a multi-start screw, the lead is the pitch multiplied by the number of starts.

im printing in 0.2 layer height and according to prusa calculator i can print between 0.19375, 0.2 and 0.20625000000000002
i think my lead screw got 1mm pitch

im printing in 0.2 layer height and according to prusa calculator i can print between 0.19375, 0.2 and 0.20625000000000002
i think my lead screw got 1mm pitch

I didnt use any spring on my bed, is this too high for z axis 5086 s/mm before it only at 2579s/mm and after i change my stepstick the s/mm also change.

nono he using 8mm threaded rod. which is 1.25mm pitch. 5120 is the nominal s/mm.

So i use izzudinhafiz value and get 9.8 when i print 15x15x10 cube and i adjust it and get actually 10mm on the z height with this is my current value 5278s/mm

can anyone explain why my value before i change just now and my value after i change right now is still gave the same z height?

Where do you home your hotend mount? mine is at the back right i want to make it home at front right but still finding which line to edit

the two motors are connected to the same belts? How do you independently move the X or Y axis?

Edit: Nvm. found the source http://corexy.com/theory.html . Actually quite smart! You force parallelism on the structure without needing high tolerance rails.

Although how about stepper misstep? like minor occasional misstep? its going to be translated in both axis...

I think he mean the curling that happened on the corner of the model the overhang area that not contact with the heated bed.

Btw i never tried taobao, how fast is the shipment? i think i want new digital caliper

the one that i used right now is the cheap one that i bought from lelong and there still a gap when i closed it, maybe around 0.1mm

hahaha, how your build? complete already?

Still waiting for parts to arrived before i can assemble all part for the frame

Tabao shipping time depend, because i'll request to send to one place then only send back to malaysia.
I plan to buy a capacitative sensor also. We can buy together. The digital caliper, saw a lot with different pricing, any budget in mind?