<h1>Yes</h1>
<p>You need to do a two-step post-processing:</p>
<h2>Washing</h2>
<p>This is basically as easy as taking the print and dropping it into a vat of Isopropyl alcohol and vigorously shaking it to get all the liquid resin off. Careful, the resulting contaminated IPA is to be treated as <strong>toxic waste</strong>.</p>
<p>The reason why you wash the print is to make sure no resin stays on it and cures, distorting the print or altering the measurements.</p>
<h2>Post-Print-curing</h2>
<p>The next step is just having the item sit in UV light to cure thoroughly, which means either having it sit outside in sunlight or under a UV lamp. Under sunlight, it might take a few hours, under a UV lamp, it depends on how thick the object is and you might need to turn and rotate the printed part. Note that some resins, especially transparent ones, can change their coloration when exposed to sunlight, both during or after curing.</p>
<p>Curing is done to ensure all the resin is fully cured and get the full stiffness out of the print - sometimes prints are still somewhat malleable before giving them time to cure.</p>

CC BY-SA 4.0
2020-08-18T15:55:56.320Z
Some resins will discolor if cured via sunlight. This is not a factor if the intent is to paint the model.
fred_dot_u
CC BY-SA 4.0
2020-08-18T16:01:45.283Z
@fred_dot_u True and added - even a fully cured item can discolor under sunlight, it's the light breaking down some parts in the resin.
Trish
CC BY-SA 4.0
2020-08-25T01:18:17.407Z
I did recently notice a translucent's print transparency changed after UV chamber curing.
0xF2
CC BY-SA 4.0
2020-08-18T15:17:32.703Z
2020-08-18T15:58:35.367Z
2020-08-18T15:58:35.367Z
Trish
<p>You don't really need a UV curing chamber but wash it with 99 % isopropyl alcohol
and put it in bright sun, this should do the trick!!</p>

CC BY-SA 4.0
2020-08-18T17:54:26.123Z
"Bright sun" is the biggest UV source, and not always availeable.
Trish
CC BY-SA 4.0
2020-08-20T06:33:23.207Z
hmm just try in midday?
Dcybroz
CC BY-SA 4.0
2020-08-20T08:55:53.177Z
have you heard about the odd concept of *clouds* and *work*?
Trish
CC BY-SA 4.0
2020-08-21T04:15:48.687Z
what are ClOudS And wOrK?
Dcybroz
CC BY-SA 4.0
2020-08-18T16:59:06.050Z
2020-08-18T17:45:49.660Z
2020-08-18T17:45:49.660Z
Dcybroz
<p>After a resin print completes, what is the expected process to finish the print? Is some cleaning expected? I also some manufacturers sell UV chambers to cure the print surface, is this required?</p>
<p>I purchased a low-cost printer from China that is quite high-quality hardware, but sadly short on documentation. Insight on the proper post-print process is appreciated.</p>

<resin>
Curing a resin print
0xF2
# Curing a resin print

(Asked by: username_0 on 2020-08-18)

After a resin print completes, what is the expected process to finish the print? Is some cleaning expected? I also some manufacturers sell UV chambers to cure the print surface, is this required?

I purchased a low-cost printer from China that is quite high-quality hardware, but sadly short on documentation. Insight on the proper post-print process is appreciated.

**Tags:** resin

---

## 2 answers

### Answer by username_1 on 2020-08-18. Score: 1 | Accepted answer

# Yes

You need to do a two-step post-processing:

## Washing

This is basically as easy as taking the print and dropping it into a vat of Isopropyl alcohol and vigorously shaking it to get all the liquid resin off. Careful, the resulting contaminated IPA is to be treated as **toxic waste**.

The reason why you wash the print is to make sure no resin stays on it and cures, distorting the print or altering the measurements.

## Post-Print-curing

The next step is just having the item sit in UV light to cure thoroughly, which means either having it sit outside in sunlight or under a UV lamp. Under sunlight, it might take a few hours, under a UV lamp, it depends on how thick the object is and you might need to turn and rotate the printed part. Note that some resins, especially transparent ones, can change their coloration when exposed to sunlight, both during or after curing.

Curing is done to ensure all the resin is fully cured and get the full stiffness out of the print - sometimes prints are still somewhat malleable before giving them time to cure.

> **Comments:**
> **username_2**: Some resins will discolor if cured via sunlight. This is not a factor if the intent is to paint the model.  
> **username_1**: @fred_dot_u True and added - even a fully cured item can discolor under sunlight, it's the light breaking down some parts in the resin.  
> **username_0**: I did recently notice a translucent's print transparency changed after UV chamber curing.  

---

### Answer by username_3 on 2020-08-18. Score: 1

You don't really need a UV curing chamber but wash it with 99 % isopropyl alcohol
and put it in bright sun, this should do the trick!!

> **Comments:**
> **username_1**: "Bright sun" is the biggest UV source, and not always availeable.  
> **username_3**: hmm just try in midday?  
> **username_1**: have you heard about the odd concept of *clouds* and *work*?  
> **username_3**: what are ClOudS And wOrK?  

---

