Kuroi Voron โนะโมโนกาตาริ ch.3 Kinematics & Heatbed
Chapter 3 : Kinematics Building (Gantry) + Heatbed
This one gotta be about building the kinematics called Core-XY and all of this in one will called Gantry and I will also include on heatbed work.
Core-XY Kinematic, its ancentor came from Cartesian Motion family. Maybe the one on your mind. Its use X Y Z coordiation (XY on the gantry, Z on vartical in this case). I'm not gonna explain about that, cuz theres a tons on the internet already. But in summary, core-xy are
- Stable bed gives
- Easily having a better results
- Faster, move only toolhead with dual motor
- Capable of build larger printing volume printer
- Rigid build
Steps
- Prepare the linear rail
- Install the Linear rail
- XYZ-axis Assemble
- Adjustment
Linear rails straight from the factory gonna makes you think "how the heck this thing born to be a bearing". Wash'em, mostly recommend to be an IPA Solution. Soak the whole rail in to the solution, moving the block around and you can see some dried debris coming out.
Ghetto Cleaning Method
Caution : the block are able to slides out also the bearings, Its easy to get it back in place but losing them will be easier
Lubing the rail, I use synthetic white grease. There will be a through hole under the block and it can be use to grease up the bearings. I use a syringe for this, ez.
Prepared Rail
Installing on the extrusion. Since I didn'nt have a torque wrench, I use my superior torque measurement estimation tool, my hand. The concept is I will trying to tighten each hex screw tight. And trying to move the block if its feels a friction that means the nearest screw are tighter than the other like trial and errors for least error. It works for me.
In the mean time, I also installed four Z-axis linear rail.
The right method is using micrometer for micro adjustment
Now we have three metal stick with rail, we continue to assemble the Y axis. Its U shap that will contain X axis running back and forth on it with two belt driver on the back. If you printed part is not an abosolute trash and you can read the manual, its easy to do.
Core-XY Gantry During Assembly
After install X-axis, I move whole gantry to bolted with a Z joint on the frame. It was hang on a rope ready to install and adjust four Z belt and Core-XY driving belt (I'm not cover this).
Voron Shibari, Complete Heatbed
After this is an adjustment called "Deracking" or "Gantry Squaring" this kinda hard for me. Its for making the gantry parallel and x perpendicula y as much as possible to make the printer travel smoothest and makes positioning accurate. This done my moving the mounting parts to find the best postion or measure with square. I'm not gonna talk about how to but I took three days to make it right.
Spoil : After this thing can print, I reprint & replace all the parts involved in this.
Top : During deracking depression even the bed is done for a while
Bottom : Scuba Ender 3
Heatbed
Most of 3d printing need a heat up surface to an ideal point of each material, this is one of them. The heat bed consisted of a Cast Aluminium Base, Silicone Heating Pad, Magnet Sheet & PEI Priniting Sheet.
The building kit already drill a counter sunk mounting hole on the aluminium fyi
First we apply the magnet sheet on the top first, this is for attaching a PEI Sheet to an aluminium base. The magnet plate has an adhesive apply on one side, slap that to the aluminium (clean the surface with IPA first). After that we will apply the heating pad with a thermal sensor on the other side of the aluminium, with its sitcker of course.
But for a better safety factor. I was wired a thermal fuse and apply Silicon. As for preventing my house from 🔥, the fuse will blown after the heat exceed the highest possible operating temperature. And High Temperature Silicon will prevent the heating pad fell out from the bed, even the sticker glue failed.
After finish preparation, I will need to apply some pressure on them and leave it there for a day or two. Then it s ready to be mount on the frame
Plain Aluminium Bed
Leaving it for a while,
With a pressure of my other hobbies
Finished Heatbed, Heater with Silicone