3M door masking foam

[Fasteddy]

When 3M put this foam out my shop used it for a couple years. It seemed to work ok, but would come loose at times. Then our paint jobber sold us two other brands that worked much better. When I called to order more of it last week they now only carry the 3M brand. The person working the counter said that 3M took the other foam makers to court and won a patent infringment case against them. Has anyone else heard of this?? :(

[wolfsautobody]

Who made the other brands?

[Fasteddy]

Intertape made a wide flat foam and the blue was made by Norton I believe

[isprayum]

I bellieve the 3M stuff only comes loose because its stretched. If you sort of compress it as you stick it(does that make sense?) it wont come off.

[Len]

There are several problems but also several reasons to use the 3M Aperture Tape. Not only does it come loose but it doesn't give a good feather edge to the paint so you end up with a rough paint edge where ever you use the foam.

Intertape was a different design and did a better job BUT the paint caused it to degrade and it became a real mess when base/clear was applied heavily. I didn't try Norton but I think it's rather humorous if 3M won some type of lawsuit because they have been sued for stealing a few ideas themselves. I guess it's all part of the game.

I use aperature tape when I spray the jambs first then spray the exterior. If I want to do a "more perfect" paint application I spray the exterior first then back tape to spray the jambs. This is more of a hassle but the job come out better.

[sperkins]

3M is trying to take over the world just like Home Depot.