I am employed at a company where we print non-stop, every day with our Form 3 and end up with a ton of used IPA. Sadly, as I am sure mot of you are aware, recycling IPA and the resin is a pain (at least in our area). In an attempt to reuse IPA without the concern of distillation, we are attempting to use UV lights and time to separate the IPA and resin.
I wanted to share our experiment and share our results and maybe get some suggestions.
Disclaimer: DO THIS AT YOUR OWN RISK. ALCOHOL IS FLAMMABLE AND DANGEROUS. PLEASE PROCEED WITH CAUTION.
- Cleaned fish tank (free but plenty of cheap/free options on Craigslist)
- UV Led lights (Used these as these perform identically to the Form Cure)
- Some old wood
- 18AWG wire
I arranged the UV LEDs to the top and bottom of the tank to make sure the light hardens the resin as best as possible. NOTE: The LEDs are NOT WATERPROOF. I only have these on during working hours and when I am present in case of fire. I put the bottom ones on wood with smaller cuts as risers so the tank isn’t laying on top of them.
I then used my remedial arts and craft skills to create a box lined with left over recycled material from my bosses art stash. This is to allow the light to hit it at as many angles as possible. I added a plank of wood to life the cardboard up and above the tank to allow for “easy” access (I am sure there was a smarter way to do this, but I never claimed to be smrt [I mean smart]).
07/29/21: So far, the resin is a thick gel and has separated pretty well. The issue is a cloudy IPA. What I am thinking is missing is heat. I do not have the ability to put this in the sun at all. I am thinking a heat lamp, but not sure if it will work. Hoping for a response from the community on their thoughts.
Thanks and I hope this helps and please do not hesitate to offer your own knowledge.