| Electronics > Projects, Designs, and Technical Stuff |
| 3d Printed Negative PCB with solder paste traces |
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| sourcecharge:
So, I recently did an experiment on a throw away piece of 3d printed PLA that had a 1mm deep by 4mm wide channel in it. The throw away piece was about 3 mm in depth total. I put a beed of solder paste directly out of the solder paste tube without a nozzle on to make about a 1/8 inch thick 2.5 inch line along this channel that was about 3 inchs long. I then used my solder hot air unit at 300C on the bead using normal hot air soldering movement and clearence. I found that it melted the solder but not the PLA that much....I measured the resistance and found it to be lower than the meter's ability. So that got me thinking.... PLA melts at about 170C, but ABS and PETG melts at even high temeratures to almost 220C and since the solder paste melts at 180C I was thinking that I might be able to make a 3D printed negative PCB with channels that are used for where the solder paste is put into and melted. The first thing I need to do is make a PETG type of prototype, but of course my 3D printer is having problems with higher temps then 210C, so I've decided to finally change out the mother board and do some upgrading. Anyways, the prototype will be a SOIC-8 breakout board to DIP pins. Here is a picture of what I intend to make after the 3D printer is repaired. The extruder nozzle for this print will require a 0.2mm type. |
| station240:
Let me know how you go with this, got to be more useful than trying to 3D print circuits using conductive ink. |
| Fusion916:
Just order a chinese pcb for $5 shipped |
| sourcecharge:
--- Quote from: station240 on October 24, 2018, 06:36:33 pm ---Let me know how you go with this, got to be more useful than trying to 3D print circuits using conductive ink. --- End quote --- Well, I just got done upgrading my 3dP and I now have auto bed leveling. I printed out the breakout board, but the slic3r software seems to be less qualified than cura, at least in my experience. 1 side of the PETG breakout was almost flawless, but the other side had wall problems. Although, I am reletively a noob with slic3r, the two sides seems to be showing the diference between the actual gcode. After I took some pictures, I tried using some solder paste, and the hot air unit at 300C. The breakout board melted and the walls of the traces didn't stand a chance. I have included some pics to show my 1st results, but I am not going to stop here as it was the first try. |
| sourcecharge:
--- Quote from: Fusion916 on October 24, 2018, 08:12:30 pm ---Just order a chinese pcb for $5 shipped --- End quote --- Where are you getting 5 dolla pcbs? The last 2 ucurrent boards I had printed were 90 + shipping. |
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