The first step in caulking is to buy a good caulking gun. You don't have to buy the most expensive one, but use ratchets instead of friction. Try to use cards long enough to break the seal on any type of caulking tube.

As for the sample delivery period, the existing samples need 2-3 days, most of which are free of charge. If you want your own design, it will take 7-10 days, depending on whether your design requires new molds, etc. In any case, we will respond to your request quickly.