dkustec
commented
6 months ago Most humorous storytelling issue on GH I ever saw. 💕
Open lugfug opened 7 months ago
dkustec
commented
6 months ago Most humorous storytelling issue on GH I ever saw. 💕
Valiance
commented
6 months ago I bet you could cool down your stepper motors by lowering the run_current setting for your TMC2209 entries. I have heard... if your motor is too hot to touch and hold your hand to it without getting burned, then it is running too high run_current. However, if it starts to skip steps and lower the max speed, you are too low. I have heard the goal is the sweet spot in the middle. I have my 42-34 steppers running about 0.650, except the dual Z steppers I run at 0.500. The Extruder I run at 0.700. Please do not straight up copy my settings, find out what works for you, perhaps using my settings as a start point, and test from there. Example:
Also, more info can be found on the Klipper configurations for further reading on stepper voltage settings. You will have a lot of reading ahead of you: https://www.klipper3d.org/Config_Reference.html?h=stepper
billatgit
commented
5 months ago remember to uncomment the lines (remove the #) [tmc2209 stepper_y] uart_pin: PC9 run_current: 650 stealthchop_threshold: 999999
The Problem: Let me tell you a charming story of melting plastic and destruction… (pics below)
I have an “Ender 3 V2” with the OEM CREALITY control board and OEM Marlin.
I was using it to reliably make prints a couple of times a week.
The hardware upgrades are as follows: (All were installed and working with the OEM CREALITY control board and OEM Marlin.)
Need For Speed: I wanted to upgrade to Klipper to gain more speed, control over the printing process and Dual Z tramming.
So I installed a “BTT Manta E3EZ” control board with five “EZ2209” drivers and a “BTT CB1”
The physical install was painless and normal
I used the “printer-ender3.cfg” provided on the Manta E3EZ GitHub page and included it in my “printer.cfg”
So far So Good… or so I thought
The "Great Melting": When I was configuring the BLTouch in the .cfg file, I started to smell the distinct aroma of melting ABS (not an electrical smell, nope, it was clearly melting ABS)… and the power supply fan unexpectedly turned on, even though the stepper motors were not moving.
I thought “hmm, that smell is odd… the power supply must be ‘burning off some dirt’…I wonder why the power supply fan is running…” SMH 🤦🏻♂️
I went back to configuring Klipper from my laptop.
Then I realized the Y-axis motor would intermittently “quiver”, jiggling the print bed maybe a fraction of a millimeter.
I thought “hmm, that is odd, I wonder if my config file changes are causing it to spaz out… boy that ABS smell kinda stinks…” SMH 🤦🏻♂️ (not yet seeing the problem.)
I watched a few more minutes of my YouTube video for setting up the BLTouch and made a couple of
printer.cfgedits.Trying to home the Y-axis this time revealed a “loose belt” and the Y-axis motor wasn’t moving the print bed.
I tightened the Y-axis belt tensioner and no amount of tightening would make the belt tighten up.
I thought “hmm, that is odd, how did the belt get so loose?… Geez, that ABS smell REALLY stinks…” SMH 🤦🏻♂️ (STILL not seeing the problem.)
Looking under the bed I caught a glimpse of “movement”.
I thought “Wait, what the heck is moving at the back of the printer…??!??!??”
Just then, I see the Y-axis motor FALL OFF THE PRINTER!
“Oh S#¡7 !!!
WHAT THA FU@#!!!!!
GOD D@M& IT!!!!!!
YANK THE F’ING POWER CORD!!!!!!!!!”
There in front of me, laid the melted, contorted remains of my ABS, Y-axis motor mount… (pics below)
The stepper motor slumped to the table with a thud and the flaccid belt drooped helplessly over the carnage.
DOH! 🤦🏻♂️
Still no electrical fire smell just melted ABS (which melts at 105 °C)
The motor was hot enough to give you a serious burn.
Traumatized, I took the rest of the night off, no more 3D printers for me, “GOD that ABS STINKS!”
Hardware Solution: Vowing to never repeat the “Great Melting of 2023”, I built a Y-axis motor mount out of a fence post that I bought at Home Depot which was 2”x2”, hollow, and MOST importantly it was ALL METAL!!! (pics below)
No more melting my motor off and yanking the power cord in a panic, LOL.
You can buy your very own 3 foot fence post to make your own ALL METAL motor mount here.
2 in. x 2 in. x 3 ft. Black Metal Fence Post with Flange and Post Cap https://www.homedepot.com/p/2-in-x-2-in-x-3-ft-Black-Metal-Fence-Post-with-Flange-and-Post-Cap-58285247/324829989
What Went Wrong???: Beats the F’ out of me…
Maybe you know what I totally messed up.
I’ll include my existing config file below for your review.
I’d love to make a few prints, or at the lease keep the damn thing from setting itself on fire!
Seriously though, would you look at my config file and offer your thoughts of how I could properly set up the printer … and avoid any further meltdowns?
THANK YOU for helping a fellow Maker in Need.
Lugfug
NOTE: Here are the Model Numbers of the Stepper Motors just in case that is helpful.
X: BJ42D15-26V10 LOT NO.200525G (CREALITY part) Y: BJ42D15-26V09 LOT NO.20006F (CREALITY part) Z: BJ42D15-26V10 LOT NO.200523D (CREALITY part) Z1: BJ42D15-26V12 LOT NO.230306A1 (CREALITY part) E: LDO-42STH25-1404AC(MSL) 221114 (LDO Motors part)
Current Config File: