APPROXIMATELY 7 min into the movie, The Thing In The Woods segment, when Officer Carter panics, runs, trips and falls down, accidentally discharging his REVOLVER, that never should have happened because he had JUST emptied his six (or less) round handgun using six shots at the "welder" to put him down.
The burned corpse Samantha falls on at the beginning of "The Thing in the Woods" is very obviously a dummy.
In the first short, The Welder takes the last knife out of the knife block (a small chef's blade) and stabs someone in the hand. The scene cuts away and when it comes back to him he picks a butcher knife out of it.