Can solder mask be removed?

There are several safe and reliable ways to remove solder mask from the circuit board surface. Grinding and scraping, milling, micro blasting, and chemical stripping are the most common.

How do I remove resist from PCB?

Resist can be removed through scraping, machining, chemical stripping or microblasting. 1 Scrape the surface of the circuit board with a knife, pick or scraper in the areas where you want the solder resist removed. 2 Scrape until all the resist film is removed from one area, then move to another section.

How do you cure a solder mask?

Final Cure Once all of the under exposed resin has been removed and PCB cleaned, it’s time to fully cure the resin. Using the UV light, expose the PCB again, this time for about a minute. This will ensure all of the resin is hardened and fully cured.

How do you dissolve PCB resin?

Heat the epoxy residue with a soldering iron set to 500-600°F. The epoxy will soften and lose adhesion, and can then be easily scrapped off. Again, this removal method can be used on metal, glass or any surface that will not be adversely affected by high temperatures, not PCB material.

Will acetone remove conformal coating?

MEK or acetone will work. Be sure you have a good ventilation system above for fumes.

How long does UV solder mask take to cure?

Final Cure: Once all of the under exposed resin has been removed and PCB cleaned, it’s time to fully cure the resin. Using the UV light, expose the PCB again, this time for about 10 minutes. This will ensure all of the resin is hardened and fully cured.

What is UV solder mask?

UV curable solder mask is a special type of resin that hardens when exposed to ultraviolet light. It comes different colors in a syringe type tube. You can find it online or purchase it from your local electronics hobby shop. Most important parts needed is the UV resin and transparency film.

How do you remove PCB potting compound?

1 Answer

1. Heating it up. Some compounds separate from the substrate when you just heat it to about 150 Celsius.
2. Hit it with a hammer. If the coating is only on one side of the PCB like in the image, a heavy blow can cause it to separate.
3. Acetone bath.
4. Heated nitric acid bath.

How do you get something out of resin?

Acetone is another simple but effective way to remove resin. Similar to vinegar, acetone is found in almost every household. Put some of it on a cotton swab and rub the affected area until the epoxy resin can be removed.

How do you remove urethane conformal coating?

Thermal Method for Conformal Coating Removal

1. Thermal removal involves the use of a low-temperature heat to gently burn and melt the coating.
2. You’ll need to make sure to use a controlled low-temperature tool so as not to damage the PCB, so the use of a soldering iron is not recommended.

How do you remove a conformal coating FPV?

If you want to remove every bit of coating on a PCB, you will have to dip the whole board in alcohol and clean with a toothbrush. The coating will dissolve, and finally let it dry completely.