Originally posted by Ron_Eggers:
That's interesting, Jim. Would you say that the new 3M system we saw in Atlanta may become the new best way to vacuum cold-mount? It looked good to me and seemed to address the various problems I've had with both wet-mounting and toxic sprays.
Hi, Ron:
Nobody yet knows all the ups and downs of Pro-Spray. But when we receive the ones we have on order, all of us should be able to judge for ourselves how useful this new system will be.
Aerosol spray mounting is rare in my shop already. It is the least-permanent, most invasive, most toxic, and most expensive method I've seen. In almost every case there's an alternative that is less costly, less toxic, less invasive, and more permanent.
Cold adhesive-sheet mounting isn't toxic, but shares most of the other characteristics of spray mounting. However, it's been quite a while since I've checked out the products for that method, and some of the newer ones may be much improved over what I remember. One of these days I'll get around to trying that method again.
I'm inclined to think Pro-Spray would replace dry mounting more than wet mounting in my shop. Dry mounting is a precise process, the results of which are totally dependent on time, temperature, pressure & moisture. The worst part is that if something about a dry mount is imperfect, it might not show up for a couple of years. Framers are making defective drymounts every day and not realizing it.
Pro-Spray, from what we saw in Atlanta, should be faster, easier, and more dependable than dry mounting, for non-porous items & substrates not suitable for wet mounting.
Wet mounting under vacuum is so easy, dependable, and inexpensive that I can't imagine any better alternative for porous materials. Admittedly, it wouldn't be so great without a vacuum press. But then, neither would any other mounting choice we've talked about.
Ron, what kind of problems have you had with wet mounting?