Generate 4x2 Brick Model

//Import MachineBlocks block() module
use <machineblocks/lib/block.scad>;

//Generate a classic 4x2 Brick
block(
    baseLayers = 3,
    grid = [4, 2],
    knobSize = 5.0, //Reduce this value if the knobs do not fit into a LEGO brick or only with great difficulty
    baseSideAdjustment = -0.1,
    baseHeightAdjustment = 0.0 //Reduce this value if the base of the brick is too high
);

Render and Export

1. Press Full Render
2. Press Export STL

Import into Slicer

• Nozzle Diameter

  0.4 mm
  The models are designed to be printed with a 0.4 mm nozzle. Depending on the precision of the printer, you may need to adjust some parameters to achieve the desired clamp force of the bricks.

• Filament

  PETG or PLA
  We have tested the models with both PETG and PLA filament. PETG is slightly more flexible and durable, so the bricks hold up better, especially after prolonged use.

• Layer Height

  0.2 mm
  The models are optimized for a layer height of 0.2 mm. Depending on the precision of the printer, you may need to adjust the height of the brick using the baseHeightAdjustment parameter to get as close as possible to the height of an original LEGO brick.

• Supports

  None
  For most models, no supports are required at all. If a model requires support structures, these are usually already included in the model itself. However, for very few models, the supports must be activated in the slicer.

• Infill

  15%
  It is recommended to print all models with 15% infill.

• Bed Temperature

  High
  The bricks have a very small contact surface with the printing plate. A high bed temperature, especially for the first layer, is therefore highly recommended to prevent the brick from detaching during printing. However, the exact temperature setting depends on the printer and filament used.

• Nozzle Temperature

  Max
  It is recommended to use the highest possible nozzle temperature specified by the filament manufacturer so that the extruded filament is very fluid. Otherwise, it can easily happen that the already applied filament tears off during the printing process. A high nozzle temperature can also improve the adhesion of the first layer. However, the exact temperature setting depends on the printer and the filament used.