How to Remove Cured Resin from the LCD Screen of a Resin 3D Printer

There are many ways you might get resin on the LCD screen of your resin 3D printer. You might have a print failure that causes a tear in your FEP and resin can leak through. You might get some on the bottom of your vat while changing resin types. If it gets exposed to UV light it will cure on and get stuck to your screen. Cured resin can be extremely difficult to remove from solid surfaces.

There are a few ways to get resin off of your screen. But it can be really easy to scratch your screen if you aren’t careful so here is how I have used to get it off of my screen.

Wipe down the screen with isopropyl alcohol (IPA) and a clean microfiber cloth
Add some more IPA and use a plastic scraper to remove the resin
Keep working at the resin until it comes free

The tools that I used to clean my screen

Plastic razor blade scraper

Isopropyl Alcohol

Microfiber Cleaning Cloth

Wipe Down the LCD Screen

The first thing that you need to do is clean the screen to remove any loose particles. I use a little bit of IPA and a clean microfiber cloth to get mine clean. This will not remove any of the cured resin but can help to get rid of any other particles that might cause scratches.

Use a Plastic Scraper

Plastic scrapers use “blades” that are plastic. They have the same form factor as double-sided razor blades but are much safer. They won’t scratch your screen nearly as easily as a traditional metal scraper. I still have some IPA on the screen that helps it to glide above the surface a little bit more and further reduce the possibility of scratches.

I find it works best to keep a fairly shallow angle and be persistent with the scraper. With enough effort and time, the resin will come off

There is a reason that they give you a lot of different blades with these scrapers. The blades get nicked up and dull very quickly. Remember to change the blades often. To get the screen clean with the resin that is in the picture at the top of this article, It went through three different blades.

Once you get some of the resin to start coming off from the screen, you should clean it in order to see how much is still left to clear.

Patience is Key

After much persistence, the screen is clean and functional again. Now is the time to add a screen protector to make this process much easier. because it isn’t if you will get more resin on your screen, but rather when will you get more resin on your screen.