<p>There are several ways to ensure water tightness:</p>
<h1>Thicker walls</h1>
<p>I have experienced that 3 walls and 5 tops/bottoms with an outer shell of Concentric while the core is lines become watertight enough that leakage is almost none.</p>
<h1>Lacquer</h1>
<p>The oldest known method to seal a piece of porous material is a lacquer, followed by glaze. Glazes require to be burned at some thousand degrees, so are out, but lacquers are simple and easy. Basic clear acrylic lacquer can be used to seep into all the cracks and crannies and then harden out. It's easy to apply and cheap from home depot. Polyurethane lacquers also work. If you look to use it for food, ask if the lacquer is food rated in home depot.</p>

CC BY-SA 4.0
2020-12-13T17:24:23.693Z
Thanks so much for your input. One more quick question, should I use acrylic or polyurethane?
Bro. Paul
CC BY-SA 4.0
2020-12-13T20:44:18.943Z
@Bro.Paul both are good, but I prefer acrylic.
Trish
CC BY-SA 4.0
2020-12-04T22:47:24.240Z
2020-12-13T20:45:46.590Z
2020-12-13T20:45:46.590Z
Trish
<p>This is a specific model for a specific reason. It's shaped like a cylinder and has a recessed bottom. I'm using a Flashforge Adventurer 3 with Flashforge filament. I tried Sunlu silver/silk PLA+ but my Flashforge didn't like it, so I took the recommendation to use Flashforge filament. It worked just fine, but when I put water in it, it has leaks.</p>
<p>I was printing at 210 with a plate temp at 50. Like I stated, I was excited except for the fact that it's not watertight.</p>
<p>Since I'm new at this process, my first thought was there must be a food grade spray, or close to food grade, that could seal the model after I touch it up.</p>
<p>Does anyone know if there is one available? Or are there settings that I need to address?</p>
<p>Thanks in advance for any comments.<a href="https://i.sstatic.net/Hp1L2.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/Hp1L2.jpg" alt="enter image description here" /></a></p>

CC BY-SA 4.0
2020-12-12T15:30:29.703Z
Plastic coating sprays are a thing, though probably far from food safe.
Ezra
<water-resistance>
Is there a way to make a watertight model? Is there a spray that may work?
Bro. Paul
# Is there a way to make a watertight model? Is there a spray that may work?

(Asked by: username_0 on 2020-12-04)

This is a specific model for a specific reason. It's shaped like a cylinder and has a recessed bottom. I'm using a Flashforge Adventurer 3 with Flashforge filament. I tried Sunlu silver/silk PLA+ but my Flashforge didn't like it, so I took the recommendation to use Flashforge filament. It worked just fine, but when I put water in it, it has leaks.

I was printing at 210 with a plate temp at 50. Like I stated, I was excited except for the fact that it's not watertight.

Since I'm new at this process, my first thought was there must be a food grade spray, or close to food grade, that could seal the model after I touch it up.

Does anyone know if there is one available? Or are there settings that I need to address?

Thanks in advance for any comments.[![enter image description here](https://i.sstatic.net/Hp1L2.jpg)](https://i.sstatic.net/Hp1L2.jpg)

**Tags:** water-resistance
> **Comments:**
> **username_1**: Plastic coating sprays are a thing, though probably far from food safe.  

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## 1 answers

### Answer by username_2 on 2020-12-04. Score: 1 | Accepted answer

There are several ways to ensure water tightness:

# Thicker walls

I have experienced that 3 walls and 5 tops/bottoms with an outer shell of Concentric while the core is lines become watertight enough that leakage is almost none.

# Lacquer

The oldest known method to seal a piece of porous material is a lacquer, followed by glaze. Glazes require to be burned at some thousand degrees, so are out, but lacquers are simple and easy. Basic clear acrylic lacquer can be used to seep into all the cracks and crannies and then harden out. It's easy to apply and cheap from home depot. Polyurethane lacquers also work. If you look to use it for food, ask if the lacquer is food rated in home depot.

> **Comments:**
> **username_0**: Thanks so much for your input. One more quick question, should I use acrylic or polyurethane?  
> **username_2**: @Bro.Paul both are good, but I prefer acrylic.  

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