Midwest Reprap Festival or MRRF for short is one of the most incredible 3d printer events on the planet. It may not be packed with suit wearing industry experts like you would see at an additive manufacturing event with industrial 3d printers; but it has the potent DIY maker spirit way ingrained into the thriving community.
The RepRap Festival is held yearly in Goshen, Indiana and there is no other 3d printing event like it. It’s hard to find the words to describe the experience that gives it the justice it deserves. The small venue in Goshen, Indiana holds the most enriched gathering of 3d printing enthusiasts. Compared to previous years there were many more people attending or exhibiting. The venue was packed to seams with some of the best 3d printer builds you can find. The Reprap Project founder Adrian Bowyer would be proud if he saw what the creative community has evolved into.
- Midwest Reprap Festival
- White Knight 3D Printer
- Mitch3D: Backpack Delta Printer
- E3D Toolchanger
- E3D Toolchanger Clones
- Cool 3D Printing Projects
- Ryan Carlyle: 3D Printer Engineering
- Maarten van Lier of Core3D.Tech
- C3Dt/bd Big Delta Printer
- SeeMeCNC Large Delta 3D Printer: Part Daddy
- Railcore 3D Printer
- Railcore Labs & Project R3D
- Creative 3d Technologies – Creativebot Duo
- 3D Printed 3D Printers
- MulBot – 3D Printing World
- RepRap WHEELIOS
- Tiny Machines 3D
- Making With Luke
- Alien3D: 12 Foot Tall Community Print
- 3D Printed Nerf Guns
- Ninja-Robot: 3D Printer/CNC Mill
- Daniel Norée
- OpenRC: 3D Printed RC Cars
- Tiamat 3d Printer
- Paul Paukstelis-Carousel Tool Changer
- Piper 3D Printer: Piper 2 CoreXY
- Related Post
Midwest Reprap Festival
MRRF 2019 Highlights:
- E3D Toolchangers
- Railcore 3D Printers
- White Knight Belt Printer
- CoreXY 3D Printers
- SeeMeCNC’s Demos New Boss Delta
- OpenRC Race
- World Record of 3d Printed Tug Boats/Benchies
- 3D Distributed Demos WorkHorse 3D Printer 😉
- The Best CoreXY 3D Printers of 2019
- 3dGloop Tug of War
White Knight 3D Printer
Some of you might remember the Black Belt Printer. The Black Belt was a useful closed source belt 3d printer with a infinity Z-axis. Carl from NAK3DDesigns published an open source version mechanical concept called White Knight 3D Printer. The White Knight is a great design and well built machine.
Carl used his experience in automotive body work and applied these skills to his build. The results were great. The finished product looked like a finished product. You can find out more about the White Knight on his Thingiverse Github accounts. Just search white Knight belt 3d printer or find Carl or Nak3DDesigns on Twitter.
Mitch3D: Backpack Delta Printer
Yeah you saw that right…. That’s a Backpack Delta 3d printer. Mitch Cerroni, aka Mitch3D built a completely mobile delta printer that’s pretty much a glorified backpack that can make you stuff. You never know when you leave your house if you’re going to have to print something…. So why not?
Although Mitch3D showed his backpack delta printer at #MRRF2018 it is believed that he has increased the height of the z-axis and upgraded some of the parts to 713Maker machined aluminum parts. Looks great… now I want one lol.
- See Mitch3D YouTube
E3D definitely left an impression on the 3d printing community last year when they presented their new CoreXY 3d printer equipped with a tool changer. Although the final design hasn’t been published yet that didn’t stop many from making their own or similar inspired machines. It’s amazing how quickly the RepRap community can develop and implement an idea.
E3D Toolchanger Clones
Many exhibitors showed their own version to the tool changer technique. While there was a small number of exhibitors that had the genuine E3D core-xy printers that were sent out to early beta testers. I don’t know if tool changing 3d printers will be the feature of 3d printing multiple materials and colors but it’s a good start. Plus it gives them a reason to buy more of their great hotends. Who says you can only have a couple of hotends on a 3d printer?
The E3D tool changing corexy printer uses the Duet Wifi with the X5 expansion board to control the advanced motion system. They mentioned before how they wouldn’t be able to control the printer like they do without the Duet Wifi and Reprap Firmware. The gcode based programming and configuration allows for useful macros to be utilized to get more functionality.
Cool 3D Printing Projects
The Midwest Reprap Festival also has the most interesting 3d prints you possibly find. Its hard to not get inspired by all the cool stuff people 3d print. I think we also broke the record of the most 3d printed tug boats you can fit into one building( benchies.)
Ryan Carlyle: 3D Printer Engineering
This interesting delta 3d printer build above was designed and built by Ryan Carlyle. Ryan also wrote the book “3D Printer Engineering.” I picked up a copy at the show and this is what I think: The book is a wealth of information and I would recommend the book to anyone interested in 3d printers or machine design. Ryan Carlyle is one of the most experienced members at building DIY 3d printers and completely understands the technical details involved. The book covers the mechanics machine design and explains motion system fundamentals . You can find the book on Amazon and I highly suggest you add this one to your library. This book is a valuable resource for the newbie or experienced builder.
See Ryan Carlyle- 3D Printer Engineering Book
Maarten van Lier of Core3D.Tech
C3Dt/bd Big Delta Printer
Maarten van Lier of Core3D.Tech shows his new tall delta printer that he calls C3Dt/bd.” The “bd” stands for Big Delta. It has a build volume of 330mm DIA x 1245mm. It is a well thought out machine design made by a guy who has created a number of other awesome 3d printer designs.
What really makes this delta printer interesting is that Maarten also implemented a cantilever bed to reduce travel time. The Big Delta has 40mmx40mm extrusions and uses Nema 23’s to drive the motion. Maarten uses the Delta Smart Effector with touch sensor homing with the blue E3D hotend that has threaded heat sink commonly used on delta printers. In addition the Big Delta is equipped with THK linear rails and a 7″ PanelDue touch screen.
- Maarten van Lier’s 3D Printer Projects
- Core3D Website here
SeeMeCNC Large Delta 3D Printer: Part Daddy
This very large delta printer is called the Part Daddy. This beast was designed and built by SeeMeCNC who is a company known for creating many great delta 3d printers. Part Daddy has a pellet extruder and a 4mm nozzle that allows for large and quick 3d prints. It’s built from custom CNC machined aluminum parts and large aluminum extrusions. It works just like a regular printer except it’s LARGE. It has a print volume of 44 inch diameter x 114 inches tall.
Railcore 3D Printer
Out of all the 3d printer designs and builds you can find at #MRRF2019 my favorite is the core-xy mechanical arrangement see more. And right next to E3D’s tool changing 3d printer awesomeness is the Railcore 3d printer. Railcore Labs have published an awesome open source core xy design.
Railcore Labs & Project R3D
See Project R3D Website
See RailCore Labs
Creative 3d Technologies – Creativebot Duo
Creative 3d Technologies display the Creativebot Duo. The large format printer aimed for the professional market of industrial 3d printers. The slick design is decked out with all the good part:
- Duet3D Electronics
- Geckotek Build Plates
- Bondtech Dual Drive Extruders
- Genuine E3D Hotends
- Genuine Hiwin Linear Guide Rails
- Ball Screws
- Dyse Design Run-Out Detection
3D Printed 3D Printers
Can you 3d print a 3d printer?
MulBot – 3D Printing World
John from 3D Printing World takes functional prints to the next level. From his clever 3d printed 3d printer he calls the Mulbot to a range of printed mechanical mechanisms you can find his designs that show the true applications of 3d printing. The Mulbot’s open source design uses mostly 3d printed parts such as the frame, bearing blocks, and drive systems. The original goal of the project is to further push the RepRap/DIY concept to almost all 3d printed parts.
- Belt Acuator
- Jaw Gripper
- Three Jaw Chuck
- Linear Rail Bearing
- Linear Slides
Kuntry3D displays beautiful 3d printed Prusa and Hypercube Evolution. You may or may not of thought printing a printer but Walter from his Youtube channel Kuntry3d even 3d printed the frame which is normaly made from aluminum. The quality of prints from his 3d printed machine are spectacular.
- Kuntry3D’s Youtube Channel here
We had a chance to check out Nicholas Seward and More Technologies table to see the Wheelios printer. The RepRap Wheelios is a rolling printer that has a SCARA robot arm that can print on top of a table or other flat surface. The moving table printer has an infinite print volume. Based off of the RepRap HELIOS, this remix design moves around to position the print head allowing you to print a range of sizes that would normally be to large for most printers.
Tiny Machines 3D
Chris from Tiny Machines 3d printed a DeadMau5 helmet to give to the 3D Printing Nerd.
Making With Luke
Luke Cunningham known as “Making With Luke” built a very funtional 3d printer from old computer parts. The printer that cost him about $60 to make prints better than many high dollar machines. We look forward to see more awesome builds from Luke at #MRRF2021.
- Making With Luke Youtube Channel here
Alien3D: 12 Foot Tall Community Print
Josh from Alien3D has a big project displayed at MRRF this year. It’s a 12 foot tall community print of the Alien3D mascot. Sponsered by 3D Gloop, the project is built from 684 3d printed pieces printed from many members of the community.
- Alien3D website here
3D Printed Nerf Guns
Ninja-Robot: 3D Printer/CNC Mill
Patrick Giambalvo of Robot-Ninja’s CNC mill design. Patrick designed the HMC for home use to cut pcb’s and small aluminum parts for robotics projects. He uses ball screws and servos to get the power and accuracy for milling and 3d printing all in one machine. The well designed machine has a 275mm x 300mm 280mm build area and can also be adopted to laser engraving as well.
The OpenRC race that’s held at MRRF each year is one of the festivals highlights. Daniel Noree known for his open-source designs and the popular OpenRC 3d printed rc cars attends MRRF displaying his famous F1 OpenRC. many others display their own version of the 3d printed car.
OpenRC: 3D Printed RC Cars
Tiamat 3d Printer
The Tiamat 3d printer designed by Paul Paukstelis uses a carousel tool changer designed for E3D V6 hotends. The tool changer assembly is a spring loaded servo with a 8mm rotating rod to cycle between tools. The springs used are from used ball point pens that serve as detents into the sled piece mechanism locking the position of the tool as it changes.
Paul Paukstelis-Carousel Tool Changer
Piper 3D Printer: Piper 2 CoreXY
White Knight 3D Printer
Carl from NAK3DDesigns Have you ever needed to print an object but you were limited to the size of your 3d printer print area? If only…. you could print with an unlimited range….. an unlimited Z…….. Out of all of the awesome 3d printers at Midwest Reprap Festival…. I have to say that the White…
CoreXY Printers MRRF 2019
#MRRF2019 was fantastic and in this video we take a look at all the awesome CoreXY 3d printers that were at the show. There were many different set ups including the E3D Toolchanger to Railcore 3D Printers.
Stepper Motor Wire Color And Coil Pairs
Stepper Motor Color Coding of Wires For any stepper motor to be wired up properly, we’ll need to determine which wires are “pairs” or connected to the ends of each coil. These are usually referred to as coil “A” and coil “B”. The exact order of the pairs Black/Green or Green/Black of pins does not…
What Size Stepper Motor Should You Use? While the size of a stepper motor is just the footprint it’s the winding that determines torque. There are Nema 17’s with as much torque as a Nema 23. Most 3d printers use stepper motors to drive z-axis motion lead screws to raise or lower the bed or…
SolidCore CoreXY 3D Printer
Modular Scalable Linear Rails Balanced Carriage Pull Enclosure BOM utilizes most available parts All Metal Parts or 3D Printed Z-Axis: Independent Driven or Shared Belt Routing
SolidCore Kinematic Bed Setup
While this write up is still a work in progress as I continue to research kinematic mounting and the math used to find the angle that properly constrains the bed to allow for thermal expansion. This is the documented details of how the SolidCore kinematic mounting system should work. So comment or correct me if…
SolidCore CoreXY – Frame
Frame Profile Specs Size 2020 or 20mm x 20mm Style T-Slot Frame BOM Part List PartQuantityDescriptionSourceDocumentationFolderFrame Extrusions2020 T-SlotZylTechFrame Size ListFrame Folder570mm Long6Vertical (Tall)ZylTechFrame Size ListFrame Folder430mm Long3Vertical (Z-Axis Rail)ZylTechFrame Size ListFrame Folder660mm Long4Length (Long)ZylTechFrame Size ListFrame Folder500mm Long2Length (XY-Rail Short)ZylTechFrame Size ListFrame Folder450mm Long8WidthZylTechFrame Size ListFrame Folder SolidCore Frame BOM Vertical Frame Extrusions 6pcs 570mm…
Although this page will be used to document and collect resources to implement a toolchanger on the SolidCore printer, we’ve only completed one so far for this case study. The following design analysis is discussing a toolchanger project we prototyped for our customer, Nandan. The majority of the topic currently being discussed is of the…
CoreXY vs Cartesian
There are a few different types of 3d printer kinematics to choose from, with cartesian kinematics being the most common. Recently the corexy architecture has become more popular. In this guide, we will compare corexy vs cartesian kinematics in terms of their speed and print quality so that you can understand the difference in each…
Best CoreXY 3D Printers 2023
With so many 3d printer kits and open source build plans available, it can be a challenge to choose an option for your 3d printing needs. Every 3d printer design has different design goals for different needs as well as different compromises. Whether you’re building a new printer or just in need of a new…
CoreXY Belt Routing
CoreXY Belt Routing One of the most important parts for corexy movement is belt routing. Here’s a guide to the mechanics of corexy belt routing pulley layout in order to get accuracy and constant belt tension. Belt Routing Methods There are two main ways to implement the corexy belt path. Either a stacked pulley arrangement…
CoreXY Kinematics Explained? The corexy kinematics mechanical arrangement includes a unique motor movement where the X or Y motor move together or opposite of each other to move the carriage from left to right or towards or away . If you were to move just one motor you would see the print head move diagonal..…
Large CoreXY Build-Hardware And Firmware Settings That Increase Performance
CoreXY Scalability The scalability of a core-xy printer can be an issue when it comes to hardware design and implementation. An increased belt path can also introduce problems resulting in artifacts in 3d printed parts. A rigid gantry setup is needed and proper binding is a must. 9mm and 12mm belts are available to account…
How to 3D Print Large Parts
Layer Adhesion Layer and surface adhesion is a critical component of 3d printing. 3d printing issues increase as object size increases. Large 3d printers can be more difficult when it comes to bed leveling. As the extruded layers bond together they are fused with heat. Proper surface adhesion decreases warping that can decrease part quality. …
The WorkHorse is a large scale machine platform for 3d printing.
WorkHorse 3D Printer-Frame
Workhorse Frame Extrusions The frame of the Workhorse 3D Printer is made out of 2020 and 2040 aluminum extrusions. We use Misumi profile but most 20mm x 20mm extrusion will work.: 20mm x 20mm HFS5 Aluminum Extrusions (Misumi Brand but most brands will work) 4pcs 930mm Long6pcs 510mm Long10pcs 570mm Long3pcs 808mm Long . 20mm…
Belt Frequency And Tensioning
Loose belts are a common problem for users and cause a variety of issues. It may or may not be obvious that your 3d printer is experiencing issues. Belt tensioning defects can occur.
Large Scale 3D Printers
BigRep has been an industry leader in professional large scale 3d printers for a while now, and we had the chance to see their new machines at Rapid Event + TCT additive manufacturing convention. They showed off two of their printers they had on display: BigRep Studio and the even larger version, the BigRep One.…
Kinematic Bed Mounting
SolidCore CoreXY Z-Axis Bed Leveling We recently started working on the SolidCore 3d printer’s bed leveling and mounting system. The z-axis uses a 3-point kinematic bed mounting with magnetic pivot spheres on each mount This properly constrains the bed at 3 points of contact. The original SolidCore Z-axis design was somewhat primitive because we only…
Triple Z Bed Leveling Setup
The CoreXY motion system is a good solution if you’re looking to print faster. The 3d printer kinematics has become more popular in the last couple of years as users and DIY builders agree on an increase in print quality. The motion system is more lightweight compared to other 3d printer kinematics such as cartesian…
Triple Independent Motors Z Axis
The latest design update uses three Z-axis stepper motors. In this arrangement the belt routing to the stepper motor drive the lead screw. Each lead screw will be constrained by an MGN12 linear rail. This should also minimize vibrations that might be transferred from the motors to the z-axis. The belt to pulley ratio gives…
Are linear rails better? Linear rails produce a high degree of accuracy and stability compared to round rods with linear bearings. They have better mounting, and smoother motion which improves print quality and machine reliability. What are linear rails used for? Linear rails are used in different applications in industrial machine and motion system design.…
How to Choose Wire Gauge and Length for Your 3d Printer
How can you calculate the wire gauge and length for 3d printer wiring? Most 3D printers use either 12V or 24V. The hotend of a 3D printer may draw up to 4A, while a heated bed draws nearly 12A. If the wire is not large enough or longer than needed, it will have more resistance…
DuetWifi Expansion Board Wiring and Firmaware Configuration
Duet 3 Wiring Guide
How To Wire The Duet 3 Mainboard 6HC The Duet 3 is a great board for your 3d printer, but wiring it up can be confusing. This tutorial will walk you through how to wire the Duet 3 mainboard 6hc to your Workhorse 3d printer. Duet Wiring Instructions This is a guide on how to…
Recommended Print Settings PLA PLA / Polylactic acid is a biodegradable thermoplastic most commonly used in most FDM 3d printers. Easy to PrintDurable and Relatively StrongNon-Toxic 3d printed parts from PLA are the most common and widely used in prototyping and product development or proof of concept parts. Parts printed from PLA are used in…
3D Printing Dictionary
3D scanner – A device used to analyze physical objects to create a solid model from the cloud of points. 3D Printing – The additive manufacturing process of creating a physical object layer by layer. Also known as Additive Manufacturing. 3d Printer – A machine that creates a physical object one layer at a time…
Best DIY 3D Printer Kits & Open-Source Build Plans 2023
Building your own DIY 3D printer can be an affordable option to get started 3d printing as well as a learning experience as one gets familiar with the mechanics or the nuts and bolts of a 3D printer. You learn how it works and how to fix it when it breaks. Building a 3d printer…
Houston Maker Faire
Maker Faire is a interesting gathering of makers and creative people who enjoy learning and who love sharing what they can do with the maker communnity. If you enjoy technology and the DIY approach to life you’ll fit right in. EngineersArtists Scientists Crafters Re:3D Gigabot Large Scale 3D Printer re:3D showcase their new 3d printer…
Kinematic Mounting Bracket Kit$75.00
MGN12 Linear Rail Stop-Alignment Tool 2020$10.00
Kinematic Coupling Mounts With Magnetic Preload$45.00
Kinematic Coupled Mounts$25.00
Triple Z Idler Mount Set$55.00
SolidCore Stealth XY-Motor Mounts Upgrade$50.00
SolidCore XY Idler Pulley Bracket$40.00
SolidCore CoreXY Mechanism with Motor Mount Upgrade$185.00
Kinematic Mounting Bracket-Fixed-Neutral$18.00
WorkHorse Printer Y-Carriage$24.50
Nema 23 Bridge Mount-3030$22.50
WorkHorse Printer Build Plate$137.00
Nema 23 Mounting Bracket$20.00
WorkHorse Gantry Plates$80.00
Linear Rail Stop 2020$10.00
Endstop Switch Mount – 2040$8.00
MGN12 2040 Carriage Stop-Linear Rail Alignment Tool$12.50
Nema 23 2040 L-Bracket$17.50
Hotend Mount BLtouch / E3D$20.00
SolidCore Parts Kit$125.00
Nema 23 Motor Bridge Mount$25.00
Nema 23 Motor Mount 90 Degree$20.00
WorkHorse Printer Parts Kit$395.00
Nema 17 Z-Axis Motor Mount$17.50
Triple Z / Belted Z-Axis Motor Mount$20.00
SolidCore CoreXY Y-Carriage$25.00
SolidCore X-Carriage Kit$45.00