I think the product could be useful but there is a high risk of user error

This is the first time using this kit, maybe it was a user error

I`m sure this would work great, due to user error though the crack doubled in size

I'm sure it was user error

Keep in mind when you look at many of the low star ratings that this is a product that has its limitations and the results are strongly dependent on the individual using the product and all of the 1-star reviews are usually a result of user error or simply trying to fix something this product isn't capable of fixing

this could be user error.

solved the broken w/s