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4-12 Focus Distance Micro Adjustment

FLUX Support Team
  • Updated

Description

If you feel that the distance after autofocus is not correct or not desired, or you want to increase or decrease the distance of the autofocus by yourself, Beambox II has a built-in function that can adjust the distance.

Please check and adjust the focus distance according to the steps below.
The distance can be fine-tuned by ±2mm.

 

Step 1

Prepare a piece of solid material such as acrylic or wood..etc. and coins or materials that have a thickness of 4mm.

The coins will be easy to get and used to measure the distance.

USD  >> US quarters (25¢) x 2 pcs
(1.75mm x 2 = 3.5mm)
EUR  >> 50 cents x 2 pcs
(2.3mm x 2 = 4.6mm)
TWD >> $10 coins x 2 pcs
(1.9mm x 2 = 3.8mm)

...etc. (You can search or measure the thickness of the coins you have)



Step 2

Put the material in the center of the bed and use the touch panel to perform autofocus.

 

Step 3

Ensure the lens is in the default layer (Top). Please read through the explanation below to learn the concept of the lens' position and the focus distance.

 

Focus Mode Explanation

By default, the focus lens will be at the top, and the focus lens will be 4mm, meaning the distance between the nozzle tip and the surface of the material will have a distance of 4mm.

How do you change the position of the lens?

1. Disassemble the Lens

 

2. The Order of the Focus Mode
Focus Mode: 4mm (Default)
Lens
Block
Ring
Nozzle

 

3. Re-assemble the Lens
  1. The red side of the block has to be facing down.
  2. The curved side of the lens has to be facing up.
    (A tip to quickly determine the curved side is that it should reflect your whole face when you look at it.)
  3. Rotate the ring counterclockwise to tighten it up.

 

Step 4

Please ensure your lens is in the default layer (Top), as mentioned in the step.
Power up the machine and go to "Hardware Settings" to choose the correct focus mode.
Machine >> Hardware Settings >> Next page >> Focus Mode >> Choose the "Close Focus (Default)"

 

Step 5

Use the coins or the 4mm material to measure if the focus distance is correct. 

Insert the coins or the material into the gap between the material's surface and the nozzle tip.
Observe the distance to determine whether it is too long or too short.

Using Coins
  • Good example:

  • Bad Example - Short

  • Bad Example - Long

 

 

Using 4mm Material
  • Good example

  • Bad Example - Short

  • Bad Example - Long

 

Step 6

Go to the function to adjust the distance manually. 
(Machine > Settings > Hardware Settings > Next Page > Probe error correction）



Step 6

Setting the value to “-” will lower the bed by the unit of mm.
Setting the value to “+” will raise the bed by the unit of mm.

 

Example #1:
If the coins or 4mm material can't be inserted, it indicates the distance is too short, so you will have to lower the bed by setting it to a negative value.

 

Example #2:
If the gap is big after inserting the coins or 4mm material, it indicates the distance is too long, so you will have to raise the bed by setting it to a positive value.


#END

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