Isopropyl Alcohol for Resin 3D Printing
Resin 3D printing is like the art of modern alchemy 🧙🏼♂️: you mix your resins, start the print, and wait patiently (or not so patiently) for your creation to rise from the resin vat. But what happens once the print comes off the machine? That's where Isopropyl Alcohol for resin printing comes in.
This article is your complete guide to understanding how and why to use this magical elixir in the world of resin 3D printing.✨
Why Use Isopropyl Alcohol for Resin 3D Printing? 🧼
When your 3D printed object comes out of the printer, it's coated in a sticky layer of uncured resin. This resin isn't just unsightly — it can also affect the quality of your final print if it isn't properly removed. That's where isopropyl alcohol steps in. IPA is ideal for dissolving and washing away uncured resin thanks to its chemical properties.
The chemical formula of isopropyl alcohol (C3H8O) allows it to dissolve methacrylates and acrylic esters, which are the main components found in most resins used in 3D printing. Unlike other solvents such as water, IPA is especially effective because it doesn't interact with the cured parts of the resin. The result? A faster, more thorough clean without damaging your print. 🎯
What alcohol is used for resin 3D printing?🌟
Isopropyl alcohol is available in several concentrations: 70%, 91%, and 99.9%. However, 99.9% IPA is the most recommended option. So why go with 99.9%? Let's break it down.
1. Cleaning Power:
99.9% IPA is highly effective at removing uncured resin from prints. Unlike lower concentrations (70% and 91%), 99.9% contains virtually no water. This means a higher purity alcohol, which translates to a stronger, more efficient clean. Fewer passes, less scrubbing, and more time to keep printing! 🙌
2. Fast Drying:
Less water also means 99.9% IPA dries much faster. This is critical for resin 3D printing, as quick drying minimizes the chance of alcohol residue remaining on the surface of your print, which can interfere with the UV curing process.
3. Less Contamination:
With 99.9% IPA, the risk of contaminating your resin or your prints is significantly lower. The minimal water content reduces the likelihood of unwanted reactions and leftover residue on your prints, helping to preserve the integrity of your finished pieces.
99.9% Isopropyl Alcohol for Resin 3D Printing - Mr Resin
How to Use 99.9% Isopropyl Alcohol to Clean Resin Prints 🧪
Using 99.9% IPA is pretty straightforward, but there are a few key steps to make sure you're getting the most out of its cleaning power.
1. Preparation:
Once your print is done, remove it from the build plate. Make sure to wear gloves to avoid getting uncured resin on your skin.
2. Initial Wash:
Place your print in a container filled with 99.9% IPA. This is where the magic happens. Let the print soak for a few minutes to dissolve the uncured resin layer. No need to leave it soaking forever — just a few minutes will do the job. ⏳
3. Agitation:
The most popular method is to use a wash and cure station, since it speeds up the whole process and frees you up to focus on other things — like printing more! 😜 Some users prefer to wash manually by placing prints inside a sealed container, like a Tupperware box 😝. Simply place the print inside, seal it, and shake gently — or use a soft brush to help remove resin from hard-to-reach areas and fine details.
4. Secondary Rinse:
Remove the print and, if needed, do a quick rinse in a second clean container of IPA to remove any remaining residue. If you're using a wash and cure station, this step isn't necessary — the centrifugal wash action reaches those tricky spots much more effectively.
5. Drying:
Let the print air dry, or use compressed air to speed things up. With 99.9% IPA, this step goes much faster than you'd expect. 🌬️
6. Curing:
Once your print is dry, cure the remaining resin to harden it. You can use a UV curing station or a handheld UV light to cure manually. Simply place the part under the UV light and rotate it occasionally to ensure even curing.
You can also take advantage of direct sunlight to cure your print, although this method can be slower and depends on the sun's intensity. Either way, make sure the part is fully cured to achieve maximum hardness and durability. 💡🌞
Extra Tips for Using 99.9% IPA 🧠
1. Ventilation is Key:
IPA has a strong smell and is flammable, so make sure to use it in a well-ventilated area. An extraction fan or an open window will be your best friends here. 🍃
2. Smart Reuse:
Although 99.9% IPA is highly effective, over time it can become saturated with dissolved resin. You can reuse it several times, but make sure to filter out the residue and consider replacing it when the IPA gets too cloudy. You don't want to ruin your next print with leftover residue from the last one, right?
3. Safety First:
Always store isopropyl alcohol in a safe, properly labelled container, away from heat sources and open flames. We don't want any lab accidents — unless you're looking for inspiration for your next print project! 🔥😉
More Tips for Using Isopropyl Alcohol in 3D Printing
1. Keep the container sealed:
Isopropyl alcohol evaporates quickly, so keep the container tightly closed to prevent waste and contamination.
2. Clean your printer with alcohol:
Use a soft cloth with 99.9% IPA to wipe down your machine and remove any resin residue, keeping your equipment in top condition.
3. Do not clean FEP, ACF or nFEP films with alcohol:
These films are sensitive and can be damaged by IPA. Instead, use mild soapy water to avoid deterioration and maintain print quality.
Alternatives to Isopropyl Alcohol and Comparisons 🧐
While 99.9% IPA is the most popular and effective option for cleaning resin 3D prints, it's not the only one. Alternatives such as bioethanol exist, which some users prefer for its lower volatility and milder smell. However, IPA remains the undisputed go-to choice thanks to its availability, effectiveness, and fast evaporation rate.
Conclusion 🏁
In the world of resin 3D printing, 99.9% isopropyl alcohol is an essential tool. From its ability to quickly and effectively remove uncured resin to its fast-drying, residue-free finish, it's easy to see why so many makers and hobbyists swear by it. So next time you dive into a 3D printing project, make sure you have your trusty bottle of 99.9% IPA close at hand — and if you still haven't got your isopropyl alcohol, you can find it here at the best price: isopropyl alcohol for 3D printing. Your prints (and your sanity) will thank you! Happy printing🎉
Images by Uncle Jessie on YouTube. link to the video