Roll-up Chess magnetic (Print in Place)

This remix was created to make the original model easier to print and faster to assemble.

You just need to run three prints:

1. Chess board
2. White pieces
3. Black pieces

and enjoy it :)

You can see original model here.

Main differences

• Magnets are inserted during printing. You don't need glue. You don't need to assemble from separate pieces.
• Models are prepared for two-color printing. If you have a multi-color printer, then you don't need to paint or print other colors separately.
• The articulation has been optimized for more reliable printing.
• Increased tolerances for magnets. The original had strict tolerances.

I took the small version as a basis, and my model turned out 190x222mm. After a while I will publish the original fusion360 source files, and if you need a larger size, you can fix model yourself as you need.

You need

• Multi-color printer
• 164 magnets 10x2 (optional +24 for checkers)
• 32 magnets 4x2 (but you can use only 24 like the original model)

Let's start

Before started, I recommend calibrating and setting up your printer. I also recommend that you first print TestAssembly.stl - this printed model should fold without problems.

Before print, prepare the required number of magnets. Mark the correct side on them. To do this, I recommend using some kind of metal plate. For example, a magnetic plate for a bed is also suitable.

This project was design to be printed using 0.4mm nozzle at 0.2mm layer height with Arachne wall generator. All models printing without supports.

Attention! Your bed or print plate on your printer must be magnetic or steel! Otherwise, the magnet may stick back to the nozzle during printing and break something. Keep this in mind and use it at your own risk. Watch your printer closely as you print the layer after the magnets.

Print chess pieces

I recommend that you start printing this project with chess pieces. It's faster and easier than printing the whole chessboard. Here you can learn how to install magnets, and if something goes wrong, they are much easier to reprint than the entire chessboard.

(File Chess_Pieces.3mf contains prepared color models for printing with pauses on required layers)

Each pieces must be printed with two pauses to install the magnets:

1. 14 layer, 2.80mm
2. 44 layer, 8.80mm

When the printer pauses at this height, you should place the magnets in the correct holes. Make sure you are using the correct side of the magnet!

Then press the "resume" button on your printer, it will continue printing models on top of your magnets.

You don't need to change colors by hand on models to print white/black pieces. You can reassign these colors before sending your print job.

Print chess board

(File Chess_Board.3mf contains prepared color models for printing with pauses on required layers)

This model should also have two pauses:

• 16 layer, 3.20mm
• 32 layer, 6.40mm

At the first pause, you need to put 100 magnets 10x2 in the correct holes

(put them into all the large holes, this photo shows the middle of the process)

At the second pause, you should put the 32 magnets 4x2. Please note that the magnets in the holes must be placed sideways.

Make sure the magnets are aligned correctly! To roll up the board, they must be magnetized to each other!

Print checkers

Checkers require only one pause

• 19layer, 3.80mm

Unlike the original model, I decided to use just one magnet instead of two.

Pause GCode 

This code will make pause and lower the bed for easier insertion of magnets.

G28 XY ;parking by xy
G0 Z150 F1200 ;move down table
M400 U1 ;pause and wait user
G0 Z20 F1200 ;move up table

This code works fine for BambuLab X1C, it may be different for another printer. Paste it on the required layer via "Add Custom G-Code" in BambuStudio.

At the end

This is my first published model, and also English is not my native language, I apologize in advance if something is wrong :)