This Post is in response to a youtube video posted. http://www.youtube.com/watch?v=RzR9-HASSIA
Bought the stuff today, I'll take pics and post a review when im done. Bought some ABU type fabric, the 100% cotton type, as well as some standard woodland 100% nylon ripstop. I will do a comparison test on the ripstop nylon, however I do not have enough material of the cotton to do a side by side comparison. I think we all know how much untreated cotton fabric will leak tho... for purposes of this thread, I will weigh a piece of treated/untreated ripstop as well as do a water permeability test.
I intend on making a shooting mat out of the cotton ABU fabric (Link when that project is complete and thread is made).
So without any further delay...
If you haven't watched the video, the guy says to use the 100% Silicone tube from the hardware store, which I did, I used a total of 3 tubes to do this project. You add the silicone to the bottom of your container and add gasoline then mix till you have a watered down jello consistency the guy claims a 4:6 ratio in the video, I found this it be a little too much for large fabrics. If i were to do this project again i would most likely do a 1:9 or 2:8 ratio to make the solution very watery.
Also make sure you can completely submerge your fabric. I didn't make enough solution and ended up having to try to cover my ABU fabric by rubbing it and moving it around inside the bucket. While it was drying i noticed that the side I put in the bucket first had almost double the amount of silicone than the end of the fabric. I think that if you make the solution more "gased down" then you will get a more even, lighter coat of silicone by being able to submerge the entire fabric. Now for the fun pictures.
Mixing the solution:
Inserting the ripstop:
I let the ripstop only sit in the solution for about 2 min as its not a very absorbent material, I didnt see the need to let it sit longer. I then just tried to squeeze off as much solution as I could.
Hanging the treated material:
Now for the Cotton ABU
I somehow managed to fit the entire material into the bucket. I then kept needing it and trying to move the solution all over the cotton as it soaked it all up pretty fast, leaving some dry spots in the fabric.
Here it is drying:
Now for the leak test:
I placed the two pieces in a cup, poured water on top of the material, and let it stand for 5 min.
Results of water test:
I was surprised at how water resistant the ripstop was to begin with. It took a while for the material to become saturated and when it did it was a slow drip into the cup. The treated ripstop was 100% waterproof, not one drop got through.
Untreated Ripstop 0.35oz
Treated Ripstop 0.80oz
I will measure the test fabric and edit this post after.
This is an effective waterproofing method for many types of fabrics. I sprayed the ABU fabric with a hose and had no leakage. However, I believe another medium other than gas should be used in this project. Gas does evaporate, however there are other chemicals in gas that leave an oily residue and still stink of petrol after it has dried and been washed. I believe that paint thinner should do the same thing and evaporate completely, leaving a smell free end product. I hope to redo this experiment using a thinner solution on the ripstop and paint thinner in attempts to cut weight, eliminate that oder, and not sacrifice performance. I will update this at a later date after I give it another go around. Any questions feel free to ask.
Cost of the ABU Fabric was about $12 (3yards) @ walmart
Ripstop was about $5 (1/2 yard) (Hancock Fabrics) (Test Fabric)
Silicone used was General Electric 100% Clear Silicone Caulking Tube $5ea (x3) total of $15 (walmart)
Gasoline i had lying around but we used maybe 2 gallons (figure out your local price)
I also bought 3yards of OD Green Fleece for $6 at hancock fabrics to sew on the back of
Gloves, bucket, paint stir stick ($10 total @ lowes)
This is my first review, feedback would be appreciated.
Oh, and Facebook is a great place to host photos, unlimited space, free, and you set the album to private so ppl aren't like wtf is this picture?