I am thinking about doing that mod.
I am just a bit afraid from the part when I need to separate the touchscreen from the LCD… Is it hard to do? Any advices?
Sorry for the necroposting.
Removal
Hair blowdryer, plastic electronic spudgy, wooden toothpick, floss string, sewing string
Cleanup
rubbing alcohol, q-tip, tissue paper, white coffee paper (for streak free glass), scotch tape
You'll probably need a new adhesive gasket for the LCD and glass panel attachment.
LCD Installation with a pseudo clean room
Lastly, do the bathroom hot shower trick, but wait until the steam goes away. This won't work if your bathroom's too small without much work space.
If you want an as dust-free installation as possible, you're going to be working naked after showering.
Block off the AC vent and turn on the air duct that extracts smelly air if your bathroom has these.
It's best if you put your 3DS LCD work stuff in a cabinet until the room cools off completely.
Don't open the door, block off the door's bottom edge with a spare towel, and bring several pre-chilled bottles of water to drink and stay cool...
While canned air works okay at blowing dust off a screen, it also tends to blow more dust onto it.
You can modify a cheapy USB miniature electronic vacuum with a plastic drinking straw and some tape. This does a better job at scraping and sucking dust off the LCD than canned air.
The front tip of the straw has to be super clean of smudges and oil when probing the panels.