/diy/ - Do It Yourself

I have never worked with printer resin before.

I have some filament prints with recessed lettering that I'd like to fill in with a contrasting color like pic related, and a 500g bottle of sla resin seems far cheaper than buying two part resin and dye separately.

How thin or viscous is sla resin? If I fill a small syringe with resin and squirt it in each letter is the resin going to flow into all the corners of the letters? or if I need to thin it out, what works to thin it without fucking up it curing?