Simplify the following text for a Grade 10 native English-speaking person.
Original: During welding , the glass shards and pumice fragments adhere together ( necking at point contacts ) , deform , and compact together , resulting in a ` eutaxitic fabric ' ( see image and contrast with the ash shapes in unwelded tuff ) .
Simplified: During welding , the glass shards and pumice fragments adhere together ( necking at point contacts ) , deform , and compact together .