Product review (4 stars): Has potential
I did not buy mine from Amazon but got it as a gift years ago. I did not use it much because as others have complained it did not work well. I happened across a review here where one reviewer mentioned putting insulation in and a better fan. I tried the insulation first just because I happened to have some of the silver bubble wrap left over from another project. What a difference that made. The other reviewer also mentioned putting a better fan in. I will get around to doing that. If it makes the same incremental improvement, this thing will actually be OK.