Hello World: Solder Paste

Before starting this section, make sure you have completed Hello World: Print, and have assembled and primed the solder paste dispenser.

Burnish

Burnishing cleans up the surface and aids in soldering. It’s easy:

  • Scrub the circuit with the burnishing pad for about 20 seconds.
  • Keep going until the circuit turns a faint silver colour.
  • Applying more pressure to the pad will speed up the process.

 To check if the pads are fully burnished, hold the board up to a bright light. Burnished pads will have a slight shine when reflecting the light. If in doubt, burnish for another 20 seconds.

Locate Pads

Like you did previously:

  1. Clamp the board
  2. Mount the probe

To dispense solder paste, the V-One first needs to know the orientation of the board. To do this, you will need to help the V-One locate the designated pads:

  1. Click the MOVE TO PAD button to start the pad location process. 
  2. Use the arrow keys to move the printer to the approximate location of the pad that is highlighted in the print preview. 
    You do not need to align it perfectly just yet! For now, just get the probe close to the highlighted pad.  
  3. Click LOWER to drop the probe to the surface of the board. 
  4. Use the arrow keys to once again adjust the position of the probe. This time, position the probe in the center of the highlighted pad
    Be as accurate as possible in this step. If the alignment is off, the solder paste will not print in the right location. 
  5. click MEASURE to confirm the pad location. 
  6. Repeat steps 1-5 for the second highlighted pad.

Now the V-One has a good idea of where the board is located.

Confirm Pad Location

Before we get to printing the solder paste, use this step to make sure that the pad alignment is accurate. 

Click on any pads in the print preview, and the printer will go to the center of the pad. If you notice that the position is off, press the BACK button and repeat the Locate Pad steps. 

Print

1. Calibrate first

Select Pads
  1. Dispense solder paste on a few small pads close to the edge – we recommend using the orange pads selected below.
  2. Click START to begin printing . Adjust the solder paste flow using  and  until the pads are completely covered, but not overflowing.
  3. If there is too much paste, wipe the solder off of the selected pads and decrease the flow.


2. Print solder paste

Dispensed Paste

When you are happy with the amount of solder paste, select the remaining pads and press print!

This completes the solder paste dispensing feature. Let’s move along to the next section and discover the V-One’s reflow capabilities!

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