So, the latest experiment:http://www.plastidip.com/industrial_solutions/Liquid_Tape_-_Electrical_Insulation
1. 100% waterproofing the toes will leave feet smelly and sweaty like hands in latex gloves on a hot day. Feet are meant to breathe, so let them.
2. Too much of anything between the toes could be uncomfortable and cause blisters.
1. Wash target pair of VFFs and hang to dry.
2. Mask off the upper half of the VFF material between the toes with painter's tape.
3. Apply Liquid Tape to the unmasked lower half of the material between the toes.
4. Place material between the toes to prevent sticking.
1. 1 coat is as useful as none (I did 3).
2. Wax paper sounds like a good material to keep the toes from sticking together, but Liquid Tape bonds to the coating on wax paper.
3. Liquid Tape can pool in tight spaces.
4. Do this work outdoors in front of a fan or a gentle breeze.
5. Liquid Tape will not bond to the VFF sole making cleanup easier.
What would I do differently next time:
1. Plastic wrap or foil may be better options to prevent sticking.
2. Work the toes in conjunction with the material to prevent sticking in order to squeeze out any excess Liquid Tape paying extra attention to the pit between toes.
The VFF toes are now partially water resistant. This means I no longer fear puddles and heel walk from the car to the office. They are not 100% waterproof, so those puddles still add some moisture to my toes but it is gone in an hour or less. I do not have to sit the VFFs behind my workstation and queue some processor intense activities for 3-4 hours to dry them while in the office.
I would not do this to VFFs that I primarily used for running. Water is helpful and refreshing there, just unwelcome in daily wear shoes.
Sorry, no pictures, because I lack decent lighting and a macro focus to do so. Basically the fabric between the toes is partially rubberized halfway up.
How would I rate this mod? 2.5 stars out of 5. Lots of work for mostly workable results. There will be a minor reduction in air circulation around the toes which is why I only did half the fabric height. That doesn't bother me, though it might some people. Rain boots or overshoes may be a less time consuming option. Overall it was a decent test for $4.