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I bought this thinking that the manual pump would be better so I didn't have to worry about a spray can going flat. The reality is that the pump is awkward and does not spray evenly. I used the product to secure a lightweight flag to the backing to put in a picture frame. The flag is 24" x 18" and by the time I sprayed the whole area, much of it was already dry... and only some areas were wet. And speaking of the wet areas, the product is a thin viscosity and bled right through and you can tell the difference were it bled through. Very disappointing! I would have been much better off with the 3M spray can that I used in the past. (The 3M product was thicker and sprayed on evenly. ) My advise is to by a spray adhesive in a spray can. This product would be OK if it were a small area, perhaps for scrap-booking.
This is annoying. You get a few pumps and have to rush to saturate and soak the pump in hot water. It glues itself shut every single time. Way too frustrating and it's a shame because the glue is good. I've been using it by letting it drop from the useless pump end.
I was very disappointed with this purchase. The first time I went to use it, the sprayer was broken. I even tried to rinse sprayer out with hot water but still did not work at all. Very disappointing considering the spray feature was one of the top reasons I purchased this product.