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-   -   How to water proof a box/enclosure? (https://www.stromtrooper.com/techy-world-gps-electronics-etc/74464-how-water-proof-box-enclosure.html)

BigMan73 05-01-2012 05:48 PM

How to water proof a box/enclosure?
 
1 Attachment(s)
I'm thinking of ways to create a 100% water proof solution for an enclosure that contains an LCD screen. i.e. looking for a clear layer.
Is there some chemical that I can dip the box into?

Not really into that field, of chemicals - how is it done in the industry?

Take this enclosure:
http://i.imgur.com/xczHj.jpg

The top plexiglass is water resistant but not water proof. Is there a way to create a custom shaped plexiglass that has no holes/screws in it, using tools found in the home? A clear cover that would surround the box from 5 sides (or maybe even 6, including the bottom).

tmcgee 05-01-2012 05:59 PM

I think they make a clear Pelican box.

Arne 05-01-2012 05:59 PM

Quote:

Originally Posted by BigMan73 (Post 805128)
I'm thinking of ways to create a 100% water proof solution for an enclosure that contains an LCD screen. i.e. looking for a clear layer.
Is there some chemical that I can dip the box into?

Not really into that field, of chemicals - how is it done in the industry?

Take this enclosure:
http://i.imgur.com/xczHj.jpg

The top plexiglass is water resistant but not water proof. Is there a way to create a custom shaped plexiglass that has no holes/screws in it, using tools found in the home? A clear cover that would surround the box from 5 sides (or maybe even 6, including the bottom).

Have you considered using electronic potting compound to waterproof the electronics? Or is that too permanent?

You could use a clear box like you described and seal it with gasket maker. Waterproof but still fairly easy to remove.

BigMan73 05-01-2012 06:37 PM

1 Attachment(s)
Quote:

Originally Posted by tmcgee (Post 805138)
I think they make a clear Pelican box.

Interesting.
How can I attach the LCD module to the front side? I need to fasten it two screws. Maybe use some hot glue with two nuts, on that back of inner part of the front side?

BigMan73 05-01-2012 06:45 PM

1 Attachment(s)
Quote:

Originally Posted by Arne (Post 805139)
Have you considered using electronic potting compound to waterproof the electronics? Or is that too permanent?

You could use a clear box like you described and seal it with gasket maker. Waterproof but still fairly easy to remove.

Yes, it is too permanent

The problem is, I don't understand how to do what I described.

Black Lab 05-01-2012 06:56 PM

Quote:

Originally Posted by BigMan73 (Post 805160)
Interesting.
How can I attach the LCD module to the front side? I need to fasten it two screws. Maybe use some hot glue with two nuts, on that back of inner part of the front side?

Hot glue will not hold up long term. I use a commercial grade at work, and that is what I am used to. Over time, the glue will break away from the plastic.

I am now going to study your photograph above.


B.L.

Black Lab 05-01-2012 07:16 PM

I have used this to build my DL-650 air filters with DAP's Aquarium Sealant. (Yes, there will be an article forthcoming for doing this!). You can purchase it at Lowe's, or Home Depot. There are other brands as well, that I have used.

Shop DAP 2.8 Oz. Clear Silicone Specialty Caulk at Lowes.com


See this stuff that I am holding in my hand? Also, the package of Locktite brand behind, on my work bench. They work very well too.

http://i1102.photobucket.com/albums/...n/DSC05871.jpg

You could prototype your own box using simple materials.

Kind of like how I make my own air filters. I have two OEM air filter "frames".

I cut the old filter medium off of it.
http://i1102.photobucket.com/albums/...n/DSC05869.jpg

Squirt some glue around the base of the $5.00 filter.
http://i1102.photobucket.com/albums/...n/DSC05873.jpg

And, stick it to the frame.
http://i1102.photobucket.com/albums/...n/DSC05879.jpg

http://i1102.photobucket.com/albums/...n/DSC05889.jpg

I've been doing this since 2009. So, roughly for 60,000+ miles. I just made two more up for this season.

Okay, where were we?

Oh yeah, waterproof, FLEXIBLE (because of expansion and contraction due to changing temperatures.) glue. Check out what I listed above.

There is also this. But, I have never tried it. Aquarium Plumbing Adhesive: Mr. Sticky's Underwater Glue

B.L.

BigMan73 05-01-2012 07:16 PM

1 Attachment(s)
Quote:

Originally Posted by Black Lab (Post 805172)
Hot glue will not hold up long term. I use a commercial grade at work, and that is what I am used to. Over time, the glue will break away from the plastic.

I am now going to study your photograph above.


B.L.

Thanks, Barry!

Here is an image of the current enclosure:
http://i.minus.com/iHlEjeEIM8eqW.png

The enclosure has 4 small plastic built in 'nuts'/grooves that allow small screws to attach the LCD to the front of the enclosure. I've pointed them out with the two arrows
The enclosure comes exactly with the positions of the 4 screws which leads me to think that this case was designed for that LED display in mind.

Also, I think the Pelican micro case will probably not work, since its clear screen has some 'bars' on it that would not be a good solution.

Black Lab 05-01-2012 07:21 PM

Quote:

Originally Posted by BigMan73 (Post 805180)
Also, I think the Pelican micro case will probably not work, since its clear screen has some 'bars' on it that would not be a good solution.

I agree. I have thought about using one of the Pelican "micro" cases for a similar use, but the strengthening "ridges" across the cover, cause a problem.

I believe our posts overlapped. Go back one where I make some suggestions for better adhesive then "hot glue".

Barry

BigMan73 05-01-2012 07:23 PM

1 Attachment(s)
Quote:

Originally Posted by Black Lab (Post 805179)
I have used this to build my DL-650 air filters with DAP's Aquarium Sealant. (Yes, there will be an article forthcoming for doing this!). You can purchase it at Lowe's, or Home Depot. There are other brands as well, that I have used.

Shop DAP 2.8 Oz. Clear Silicone Specialty Caulk at Lowes.com


See this stuff that I am holding in my hand? Also, the package of Locktite brand behind, on my work bench. They work very well too.

You could prototype your own box using simple materials.

Kind of like how I make my own air filters. I have two OEM air filter "frames".

I cut the old filter medium off of it.

Squirt some glue around the base of the $5.00 filter.

I've been doing this since 2009. So, roughly for 60,000+ miles. I just made two more up for this season.

Okay, where were we?

Oh yeah, waterproof, FLEXIBLE (because of expansion and contraction due to changing temperatures.) glue. Check out what I listed above.

There is also this. But, I have never tried it. Aquarium Plumbing Adhesive: Mr. Sticky's Underwater Glue

B.L.

Thank you. Impressive.

So you're suggesting that I use the existing plexiglass solution, just water proof the sides with that glue?
But how do I keep it tidy? I mean, how do I make the glue look like it was molded, not just put by hand?


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