3D Printing - latest machine

... or "Rise of The TrollBot"

This is the third part of my posts about 3D printers that I've created over past four years.
Here is a first part
The second one is here

Part three

Ha ! This is by far my longest project since it tends to never end. It already went through countless upgrades like m$ win xp ;P
I present you The TrollBot !! ... because it trolls me all the time.

Short story

My second machine was working very well, however, I needed something bigger. Obviously, I've printed Trollbot on my previous machine. It is typical prusa-mendel based construction but enlarged and hardened - original project bibONE was created by Krzysztof (Cheers Krzychu ;))
I've built it over two years ago and it evolved a lot since then but let's start from the beginning.

First run and specs

First print on third 3D Printer ! Bigger and Better :P from pit on Vimeo.

As you can see, I decided to go with Nema-23 motors in X and Y axis. However, Z-axis remained powered by two Nema-17 motors and was running on M8 threaded rods in an early version.
X carriage had UDS-4.5 heating head and Yruds extruder powered by a short belt. It is IMO best 3d printed extruder ever ... and I've tested quite a few for past years. The system worked on 3mm filament back then. I've also didn't have 300x200 mm bed heater hence a smaller one 200x200 ;)
Controller is RAMPS with Mega2650 and Allegro based step sticks.


  • New LCD - RRD FGSC
  • New 24V heating bed - Ikea mirrors
  • Heating head - Teflon hack

Once the base of a machine was kinda working I could start with upgrades. Fist thing I needed was RRD Full Graphic Smart Controller - it is LCD with SD Card slot to conveniently print with the computer turned off. I've built it myself with a bit of trouble.

It all went rather smoothly ... except this little bastard below ;)

Since I couldn't find proper gerber files of it at that time, I had to reverse engineer this PCB from internet photos to nicely fit into my RAMPS connector ... aaand it worked nicely ;)

3rd edyszyn + full graphic lcd and encoder from pit on Vimeo.

I've also rebuilt heating bed to print on Ikea mirrors which are quite even and cheap. Heating head was wrapped in a Teflon to minimize temperature loss.

Further upgrades and mods

  • Bed auto-leveling
  • Heating bed mods
  • X-Carriage mods
  • LCD Case
  • New full metal heating head
  • Trapezoidal Z-Axis screws

I've finally bought 300x200 mm Kapton bed heater so I could start printing larger models and finally add automatic bed leveling. I chose capacitive proximity sensor LCJ18A3 straight from Chinaaaaaa ! Hell yeah ;)
However, I've bought a wrong one so I had to connect it through relay lolz :D
X-carriage was temporarily modified with a piece of plywood :D. That was necessary to install brand new full metal heating head - Lama3D - which is created and produced by my friend Syntetyczny. (Cheers buddy ;))
Z-Axis finally received 10mm trapezoidal screws along with CNC-made aluminum parts.

LCD got a new printed case.

Heated Bed Auto Leveling from pit on Vimeo.

And again further mods

  • Dedicated PC based on terminal VIA C3 by HP
  • New 24V 400W heated bed toroidal transformer
  • Aluminium heating head cover

This time, I've installed brand new Xubuntu on a small 10W HP terminal - definitely not a speed demon but it does its job ;)
Power supply for heating bed was too weak so it was swapped with 400 W toroidal transformer.
I've also added a small aluminum sheet to cover the heating head and to protect PLA parts being printed from too much heat.

3D Printer - New Mods from pit on Vimeo.

Latest upgrades and mods

  • New full metal extruder
  • Switching to 1.75 mm filament
  • New X-carriage
  • Heating bed remake again :D
  • Transformer soft-start mod

Yup, so time has come to switch to 1.75 mm filament.
I've bought a CNC milled full metal, direct drive extruder with a small modification that would allow me to use J-Head heating heads.
For this, to work I needed to modify X-Carriage. I've used aluminum plate this time for better heat dissipation.

I had few problems with a toroidal transformer. It simply blew out fuses every time it started. I've added a soft-start circuit to get rid of that problem.

Heating bed finally received its (hopefully) last mod.
The lower part was 3D printed and hardened with plywood.
The upper part has 3 layers - plywood with Kapton heater with an aluminum sheet on top of it to evenly distribute heat. That sandwich is covered by Ikea mirror with Kapton tape - finally, it works flawlessly

So here it is in its latest form !

The TrollBot !

3D Printer - New uber upgrades from pit on Vimeo.


Chaos is your redemption .... better run .... better hide

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