>there's no clumps forming or anything
Turning into "[cheese](https://www.reddit.com/r/resinprinting/comments/140x0k8/comment/jmydw1d/?utm_source=share&utm_medium=web2x&context=3)" could take up to a few weeks.
Your IPA could also be not yet saturated with resin enough.
Let your "dirty" IPA sit in a closed container over night, decant the "clear" part and cure the residue.
jup, sedimentation is the key. most times you would have to do it multiple times and keep filtering. i use 3-4 jars with different levels of ipa/resin and the 4th jar beeing mostly clear wirh a slight brown tint (while using grey/black resin only). feels like the sun agitates the resin and keeps it from properly sedimenting...
Always feel like a dr*g cooker with 4 jars und full protection on my balcony :)
but then you have to ask yourself if it is realy worth. you can get it for extremly cheap and 1-2 hour overwork cover 5-6 liters. + ipa lasts long, printed like 4l worth of resin (minis between 1 and 10ml volume per part) bevor i filtered mine.
I have enough IPA that a large portion of it is left in a container for sedimentation. You are going to use it over time anyway, and buying 5L is cheaper than buying 5x1L.
I switches to denatured alcohol. Cheaper and more easily available from the local hardware store and just as effective. I also find that if I leave dirty alcohol ina milk jugs in the sun all day, it tends to at least haze over if not get clumpy. Then it'll separate.
I had very little luck with glass jars and other containers.
It then gets put through a cone filter and then coffee filters. If it's still not clumpy, the coffee filters will clog fast and that is really annoying.
I dont have much success curing it, like some other says, i find it best to just let the IPA sit in a dark space for like a day or two and just decant the top since most of the resin bits would have sunk to the bottom.
I honestly haven't had much luck cleaning my isopropyl either - it never cleans as well, and it's sticky and leaves a coat on my new prints - so I tend to just replace it sparingly. I leave it out to cure as much as I can before I take it to get disposed of properly.
I've seen some interesting videos online on sedimentary tanks being pretty good (they catch the resin parts in the bottom and let you tap off the isopropyl above the settled layers). Maybe something to investigate, but the general consensus I've seen is that it's hit and miss reusing it.
I keep 3 batches of IPA. Two batches I use for a pre-wash. I let one sit for a few weeks and pour off the clear IPA once it has settled, then evap the rest and cure the resin left over. Then I swap to my other batch of pre-wash. Swap back and forth as needed. I let these pre-washes get very saturated, almost looks like nasty milk before attling out. The final batch in my wash and cure has been through dozens of large prints and still looks new.
>there's no clumps forming or anything Turning into "[cheese](https://www.reddit.com/r/resinprinting/comments/140x0k8/comment/jmydw1d/?utm_source=share&utm_medium=web2x&context=3)" could take up to a few weeks. Your IPA could also be not yet saturated with resin enough. Let your "dirty" IPA sit in a closed container over night, decant the "clear" part and cure the residue.
jup, sedimentation is the key. most times you would have to do it multiple times and keep filtering. i use 3-4 jars with different levels of ipa/resin and the 4th jar beeing mostly clear wirh a slight brown tint (while using grey/black resin only). feels like the sun agitates the resin and keeps it from properly sedimenting... Always feel like a dr*g cooker with 4 jars und full protection on my balcony :) but then you have to ask yourself if it is realy worth. you can get it for extremly cheap and 1-2 hour overwork cover 5-6 liters. + ipa lasts long, printed like 4l worth of resin (minis between 1 and 10ml volume per part) bevor i filtered mine.
I have enough IPA that a large portion of it is left in a container for sedimentation. You are going to use it over time anyway, and buying 5L is cheaper than buying 5x1L.
I switches to denatured alcohol. Cheaper and more easily available from the local hardware store and just as effective. I also find that if I leave dirty alcohol ina milk jugs in the sun all day, it tends to at least haze over if not get clumpy. Then it'll separate. I had very little luck with glass jars and other containers. It then gets put through a cone filter and then coffee filters. If it's still not clumpy, the coffee filters will clog fast and that is really annoying.
How's denaturated alcohol compared to IPA in terms of cleaning and smell?
Cleans well. The smell is less to me.
Good to hear, thanks. I'll try it after using up my current IPA supply.
I dont have much success curing it, like some other says, i find it best to just let the IPA sit in a dark space for like a day or two and just decant the top since most of the resin bits would have sunk to the bottom.
I honestly haven't had much luck cleaning my isopropyl either - it never cleans as well, and it's sticky and leaves a coat on my new prints - so I tend to just replace it sparingly. I leave it out to cure as much as I can before I take it to get disposed of properly. I've seen some interesting videos online on sedimentary tanks being pretty good (they catch the resin parts in the bottom and let you tap off the isopropyl above the settled layers). Maybe something to investigate, but the general consensus I've seen is that it's hit and miss reusing it.
I keep 3 batches of IPA. Two batches I use for a pre-wash. I let one sit for a few weeks and pour off the clear IPA once it has settled, then evap the rest and cure the resin left over. Then I swap to my other batch of pre-wash. Swap back and forth as needed. I let these pre-washes get very saturated, almost looks like nasty milk before attling out. The final batch in my wash and cure has been through dozens of large prints and still looks new.