I’ve wanted to build a top shelf 3D printer kit for a while, and now I present part 5 of the Rat Rig V-core 3 series. In this video we start to really push the limit to see how fast we can print a 3Dbenchy. Also covered are topics such as the final cost and whether input shaping can be used on other machines.

This video aims to be a lesson in the factors that really matter when printing fast. I push specific areas until they become a limitation and then look for fixes. An important thing to note is that my printer sticks to ‘off the shelf’ upgrades. Hopefully it means this video is more relevant for the average viewer. It also means that there is a lot of incredible custom work going on by the really fast entries that is fascinating to see.

This kit was purchased with my own money, apart from the shipping which was provided free of charge by Rat Rig. All opinions expressed are my own.

Order the Rat Rig V-core 3: https://www.ratrig.com/3d-printing-cn...
My Klipper printer.cfg file: https://pastebin.com/d4B2ExNr
Remember to PID autotune and calibrate Z offset for your own printer. This config is based on the V-core OS package.

0:00 Introduction
Rat Rig V-core 3 build playlist:    • Rat Rig V-core 3 build  

0:50 Input shaping effective on other printers?

1:20 Total cost of the machine
Spreadsheet of build costs: https://docs.google.com/spreadsheets/...

2:32 What is the #speedboatrace?
3Dbenchy: https://www.thingiverse.com/thing:763622
#speedboatrace challenge from Annex Engineering:    • #SpeedBoatRace Challenge - Lets End 2...  
MirageC’s impressive entry on the HevORT:    • My Recipe for FAST 3D printing  
Stefan from CNC Kitchen’s great video attempting this challenge:    • High Speed Printing: Hot End, Tempera...  

3:54 Stepper motor driver cooling and performance optimization
My custom Rat Rig parts: https://www.thingiverse.com/thing:487...

5:12 Speed vs acceleration - An analogy
Railton Special land speed record car: https://en.wikipedia.org/wiki/Railton...
Checkered flag stock image: https://cliparting.com/free-flag-clip...
Dragster stock image: https://www.subpng.com/png-o8ahl2/

6:54 Speed vs acceleration - Calculating effective settings
Prusa calculators: https://blog.prusaprinters.org/calcul...

8:15 Speed vs acceleration - Real life examples

9:33 Improving part cooling
SuperSniffles’ Dual 5015 cooling mod: https://contrib.eva-3d.page/cooling/d...
Mikkel Schmidt’s 7035 fan mod: https://contrib.eva-3d.page/cooling/7...
My remix parts for the Rat Rig: https://www.thingiverse.com/thing:487...

11:05 Switching to other filaments
Volcano PLA at X3D: https://x3d.com.au/products/volcano-p...

12:59 Upgrading heating power and hot end flow
Mosquito Magnum Hot End: https://www.sliceengineering.com/coll...
Triangle Labs silicone sock for Slice Engineering hot ends: https://s.click.aliexpress.com/e/_9i0Mf3
EVA carriage: https://main.eva-3d.page/

15:26 Slicer tips and tricks
Prusa Slicer: https://www.prusa3d.com/prusaslicer/

16:54 Square corner velocity
This is the equivalent of jerk/junction deviation in Marlin and allowable instantaneous speed change in RRF.
Klipper configuration reference: https://www.klipper3d.org/Config_Refe...

18:45 Response to my #speedboatrace entry video
Leaderboard: https://docs.google.com/spreadsheets/...

19:41 Conclusion: Why attempt this challenge?

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