Just layer a piece of 'Saran Wrap between each slab you stack......... Frankly, I don't know what it is you guys are doing that's scratching up the slabs. Playing catch or Pinochle?
I don't doubt it or you one bit but who sells it? I would be interested in adding this layer of protection to my more valuable slabs. Thanks.
Gonna try this again; I think I was a victim of network saturation earlier tonite. I don't have a problem with the idea - if you can find and fill a saleable niche, by all means go for it - but even as soft as they are you have to be pretty rough with a slab to scratch it. It's not as easy as you think, which makes me at people who manage to do it. You strike me as the type of person who probably wouldn't engage in activity which stands a chance of scratching a slab.
I really am careful with my own but I often see folks photographing them and see scratches on theirs. And now that it's been mentioned I remember hearing of the Interceptor Shields. I (was) ,thinking of the possibility of a niche market and have investigated getting a few other items not related to numismatics, off the drawing board and it can be very expensive.
I prefer just keeping them in the PCGS/NGC boxes. The better slabs I really want to baby I will just put them in the box in every other slot to leave them extra room where they can never touch.
I use those binder pages. But, someone mentioned a clever use of those sports trading card sleeves. If they get all wrinkly, then it'll be cheap to replace them. If you fear that they may slip out, then maybe you can add a second sleeve the other way around - not sure if it'll fit and it may scrunch up a bit, but there may be different size sleeves, or you can use a baggy over it. I use two different size sleeves to protect my raw currency notes, just as I describe above. You can probably do the same with graded ones, too.
I have an easy solution to this that desertgem brought up previously - car scratch remover! I bought one for about $2.50 and it gets the scratches out easily (fills in the scratches with what I am guessing is a substance that dries out with the same angle of refraction for light as the plastic.
Works much better on PCGS slabs then NGC ones, but a lot of people do you that method if they get dinged up
The flexible plastic protectors are also available as mentioned here. http://www.wizardcoinsupply.com/slab-protectors.html
I had no idea slabs would fit in those. They're very easy to find, too! This stuff works well, but I don't think it fills in the scratches. Most of these scratch removers are really just buffing compounds. You'll find they can take out light scratches but won't do anything for deep scratches.