Frankenblock 10000-1 - Calibration Package v1

3D Printing + Frankenblocks

These objects can help you calibrate your printer. This should make it easier to print Lego compatible blocks, such as the Frankenblocks.

You can find the files on Makerworld.

How to use these models:

Plate 1

This is my default test object, 10017-2. You need to use this in combination with some regular Lego bricks.

This test was good enough to get me 99.99% compatible Lego bricks.

1. Set scale to 100.0% (select an object, then press [S])

2. Set X-Y Contour Compensation to 0%

3. Print

4. Use some ORIGINAL Lego bricks, and place them on the test object like below:

(Click image to enlarge)

5. Check the sizes 127.8 and 64.2 mm. If these are incorrect then adjust the scale [S] and print again. 

6. Don't care too much about the sizes marked with an asterisk, these are indicative. I noticed that especially the 127.8 of the test object may be quite a bit off.

(Click image to enlarge)

7. Stack multiple bricks on top of the test piece. If the sizing is correct the printed test piece should not bend, but stay flat.

(Click image to enlarge)

8. Stack multiple original bricks on top of the test piece. If the sizing is correct, the gaps between the bricks should be similar.

(Click image to enlarge)

7. If the Lego bricks don't 'snap' on or off, then adjust X-Y Contour Compensation and re-print, until the bricks fit properly.

Note on size

Each lego 'stud' takes a square of 8.0 x 8.0 mm, so a 4 by 2 will be 32.0 x 16.0 mm. However, the actual brick will be 0.1 mm smaller on all sides, to help you place and remove blocks, so the 4x2 brick will acutally be 4x8.0-2x0.1 by 2x8.0-2x01 mm, or 31.8 x 15.8 mm.

My results

These may differ from yours! I used a Bambu Lab X1C, a DIY FR4 build plate, and Jayo PETG Sunny Orange.

• Scale 100.1

• XY Contour Compensation 0.02

Plate 2

X/Y/Z test models that help establishing the impact of shrinkage and accuracy.

You only need plate 1. This plate is optional. It may help identify further problems in X / Y / Z direction, but typically, you should already be fine after doing your tests with plate 1.

1. Set X / Y / Z scale to the values found with Plate 1

2. Set X-Y Contour Compensation to 0

3. Print

4. You should measure 100.0 mm end to end on each object, and 50 mm between the markers.

On my own prints I found the 50 mm to be correct, and the 100 mm to be wrong. Sticking to the results of Plate 1 gave me prints that were good enough for my purposes, but this test can help you find out correction / scale factors for the individual X / Y / Z directions.

Plate 3

My older calibration model.

You typically don't need this one, but it allows some stud 'grippiness' tests.

Plate 4

Several test objects.

This Plate contains a Frankenblock Small Baseplate, and 4 different Lego compatible bricks.

(Click image to enlarge)