things to do before building #

organize nuts and screw into correct sizes
lub rails
- use ptfe lub, and fill greese from back there you see the ball bearings
check threads on screw before using
- save some time when inserting into aluminum extrusion

Notes While Building #

setting the nuts into the track was not too bad
- didnt really need a printed part to do this

getting a completely square frame
- used a piece of large tile.. but still not perfect
- very very little wobble exists. but were not building a rocket i guess.. so we’ll see
flipped on of the bearing for core-xy. instead of having the shoulder fo the bearing facing out, from one another both bearings were facing in the same direction
- had to take apart and fix mistake
didnt really understand what it means to have the belts be cut at the same length
- was thinking “i have extra belt, so i dont really need to measure down to the mm”
- this was wrong, its better to set up one belt. take it out, cut the exact size for the second belt. as prescribed in the instructions
Electronics were not too bad
- formbot kit had too short of a wire for part fan motors, and extruder motors
  - i guess it would be the perfect length if you use the “umbilical” mode
screws for the legs were too short.. a 40mm wont do. 45mm is perfect
- had to buy an extra “assorted” box of M3 – this is needed for future anyways

pay attention when setting up the CORE-xy motors
- make sure all the stepper buzz move in the correct direction
- do your first homing slowly, take the time to do it.
didnt know what thermistor was used with hotend
- had to try a bunch of different “sensor types” on klipper
- finally found that for MY printer.. it is the “ATC Semitect 104GT-2”. had the closest reading to 200C
  - used Fluke 17B+ i had around to do temp cross check
adding accel for measuring resonance
- had to add rpi as secondary mcu ffirst - follow this or else when you add in the input shaper configurations into printer.cfg, the firmware wont start
taking awhile to figure out what is limiting the speed for advance pressure at 100m/s
- it turns out that the “time to cool” was limiting the print speed
Follow the wiring layout EXACTLY as you see it in the PDF
- this REALLY means that the leads to the hotend fans should be split!!

Looking at mini sherpa extruder since the mini-afterburner is down
- This is the hotend part
- this is the extruder