Step 1: Turn Your Messenger Bag Into a Camera Bag
2) Buy a camera bag insert (such as: http://bhpho.to/1azyl3)
3) Put insert into bag...and, voilà!
Step 2: Materials Needed to Wax Your Bag
2) A double boiler. I recommend NOT using one intended for kitchen use...it can be a mess to clean. Rig one out of old pans, coffee cans, or whatever you may have around. I used two old, aluminum camping pots that I had sitting in the basement.
3) Wax. Many places recommend a blended mixture of paraffin and bee's wax, but I used straight paraffin, and it seems to have turned out fine. You can pick up a pound box of paraffin wax in the canning section of Walmart or your local grocery store. You shouldn't need more than one or two of the included wax bars. - LINK: http://bit.ly/fsoxAU
4) A brush. I recommend a bristle brush between 1/2" and 1"...up to 1-1/2". Any smaller and it would take to long; much larger, and it would be too unwieldy and messy. I used a half-inch artistic brush I had sitting around.
Step 3: How to Wax Your Canvas Bag & Make It Water-Resistent & Durable
2) Once the wax has started to melt, dip your brush into it, and begin painting all surfaces of your bag, paying special attention to the seams and bottom of the bag. Maybe coat the bottom a little extra well as this i the area that will be taking the brunt of the wear. Allow was to cool...it will become caked and hardened, but that is okay.
3) Put your canvas bag into an old pillow case, and tie off the end. (This keeps the wax from getting all over the place.) Then, put it in the dryer on HIGH for about 15 to 30 minutes. This allows the wax to be evenly melted into the fabric. You can also use a hair dryer (much more of a pain with this amount of wax, but possible) or a heat gun (a bit overkill).
1) Use it as-is.
2) Work the fabric to break it in and soften it a bit.
3) Give it another application or two. (I only gave mine one application so far.)
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